HomeMy WebLinkAbout01 PUBLIC HEALTH GOALS (PHGS) 2007-09 REPORT• Agenda Item 1
AGENDA REPORT Reviewed.
City Manager
Finance Director N/A
MEETING DATE: JULY 6, 2010
TO: WILLIAM A. HUSTON, CITY MANAGER
FROM: DOUGLAS S. STACK, DIRECTOR OF PUBLIC WORKS/CITY ENGINEER
SUBJECT: PUBLIC HEALTH GOALS (PHGs) 2007-2009 REPORT
SUMMARY
The California Health and Safety Code requires that operators of large water utility systems
periodically prepare a report and conduct a public hearing regarding the health of the water
supplied to customers. For the 2007-2009 reporting period, the drinking water quality of the City of
Tustin Water Services complied with all California Department of Public Health and USEPA
drinking water standards. While Tustin's water system exceeded the public health goals (PHG) for
arsenic, uranium, coliform bacteria, lead, and copper, these levels remained below the EPA's
action levels and the City remains in overall compliance with all regulatory water quality standards
and no additional treatment programs are required.
RECOMMENDATION
It is recommended that the City Council take the following actions:
1. Conduct a public hearing to accept and respond to public comments on the 2007-2009 Public
Health Goals Report; and
2. At the conclusion of the public hearing, approve the 2007-2009 Public Health Goals Report.
FISCAL IMPACT
There is no fiscal impact associated with this item.
DISCUSSION
Provisions of the California Health and Safety Code specify that California water utility systems
with more than 10,000 service connections periodically prepare a report and conduct a public
hearing if contaminants are detected above the PHGs adopted by the California Environmental
Protection Agency's Office of Environmental Health Hazard Assessment (OEHHA) or above the
maximum contaminant level goals (MCLGs) adopted by the United States Environmental Agency
(USEPA).
Overall, the City is in compliance with all regulatory water quality standards. However, for the 2007-
2009 reporting period, Tustin's water system exceeded the PHGs for arsenic, uranium, coliform
bacteria, lead, and copper, but still remained below the EPA's level's for mandatory action. All
other water quality monitoring results are less than the state PHG or federal MCLG.
The PHG for arsenic is 0.004 parts per billion and MCL is 10 parts per billion. Low levels of arsenic
have been found in Tustin's groundwater source less than 2.0 parts per billion. Tustin also
purchases some treated surface water from Metropolitan Water District (MWD). This source has
Public Health Goals Report for 2007-2009
July 6, 2010
Page 2
detection as high as 3.2 parts per billion from 2007-2009. Arsenic is naturally occurring element
found throughout the earth's crust and the levels were below the MCL at all times.
For uranium, the PHG is 0.43 pico curies/liter and MCL is 20 pico curies/liter. Lab studies detected
low levels of uranium in the City's groundwater wells averaging less than 2.0 pico curies/liter from
2007-2009. In the water purchased from MWD, uranium was detected in average of 3.3 pico
curies/liter. The levels from both sources were below the MCL at all times.
Coliform bacteria is an indicator organism that used to determine the effectiveness of water
disinfection efforts. It is not unusual for a public water system to have an occasional positive
sample. The MCL for coliform is 5% positive samples in any month and the MCLG is zero. For
this reporting period, Tustin's water system had a highest monthly positive sample of 2% and the
levels were below the MCL at all times.
While there is no drinking water MCL for lead and copper, the California Department of Public
Health (CDPH) has adopted a not be exceed action level for lead and copper at the 90th percentile
value of all samples from household taps. Based on 2009 sampling data from Tustin's water
system, the 90th percentile values for lead and copper were no more than 10 parts per billion and
0.53 parts per million, respectively. This value exceeds the PHG level of 2 parts per billion for lead
and 0.17 parts per million for copper, but is lower than the regulatory action level of 15 parts per
billion for lead and 1.3 parts per million for copper.
The drinking water quality of the City of Tustin Water Services meets all CDPH and USEPA
drinking water standards set to protect public health. Consequently, no further action is required by
the City and staff is requesting the City Council to approve the report upon the conclusion of the
public hearing.
90-04A/ Z&
A41 -
IS. Stack, P.E. Vicky Kim
of Public Works/City Engineer Management Analyst
Attachments: 1.Public Health Goals (PHGs) 2007-2009 Report
2.MCLs, DLRs and PHGs for Regulated Drinking Water Contaminants
3.Nitrate Analysis and Coliform Monitoring
4.Cost Estimates for Treatment Technologies
5.Vulnerability Assessment and Waiver Status
6.Water Quality Reports 2008, 2009, 2010
ATTACHMENT NO. 1
CITY OF TUSTIN
PUBLIC HEALTH GOALS (PHG)
2007-2009 REPORT
TuSTIN
111, IS I;Y
iLILUII*IG OUR J -UI URL
HONORING OUR TMST
JUNE, 2010
BACKGROUND
Provisions of the California Health and Safety Code specify that larger (>10,000 service
connections) water utilities prepare a special report by July 1, 2010 if their water quality
measurements have. exceeded any Public Health Goals (PHGs). PHGs are non -enforceable
goals established by the Cal -EPA's Office of Environmental Health Hazard Assessment
(OEHHA). The law also requires that where OEHHA has not adopted a PHG for a constituent,
the water suppliers are to use the MCLGs adopted by United States Environmental Protection
Agency (USEPA). Only constituents which have a California primary drinking water standard
and for which either a PHG or MCLG has been set are to be addressed. These PHGs or
MCLGs are listed in Attachment No. 1.
There are a few constituents that are routinely detected in water systems at levels usually well
below the drinking water standards for which no PHG nor MCLG has yet been adopted by
OEHHA or USEPA including Total Trihalomethanes. These will be addressed in a future
required report after a PHG has been adopted.
The new law specifies what information is to be provided in the report.
If a constituent was detected in the City of Tustin's water supply between 2007 and 2009 at a
level exceeding an applicable PHG or MCLG, this report provides the information required by
the law. Included is the numerical public health risk associated with the MCL and the PHG or
MCLG, the category or type of risk to health that could be associated with each constituent, the
best treatment tech nology'avai lable that could be used to reduce the constituent level, and an
estimate of the cost to install that treatment if it is appropriate and feasible.
INTRODUCTION
The City of Tustin provides potable water service to most of the incorporated area of the City
and also to unincorporated areas north of the City's boundaries. The City's existing source of
water supply include 30% from the Metropolitan Water District of Southern California (MET's)
imported water system, and 70% from a combination of eight untreated [or clean] local
groundwater wells that pump directly into the City's water system, and two water treatment
facilities [Main Street Treatment Plant and 17th Street Desalter] that treat groundwater from five
additional wells.
At one of the well sites supplying water directly into the City's water system, water is blended
with other well water to reduce nitrate concentrations below the State's MCL for this constituent.
More specifically, Beneta Well is blended with water from the Columbus -Tustin Well.
Similarly, two of the wells that supply water to the two water treatment facilities [Main Street
Treatment Plant and 17th Street Desalter] contain Perchlorate. The well water is treated to
reduce Perchlorate levels, below the State's MCL for this constituent.
The drinking water quality of the Tustin meets all State of California, Department of Public
Health (DPH) and USEPA drinking water standards established to protect public health and
safety. This report reviews the existing water quality data of the water within the City's water
distribution system, and compares the water quality to set PHG and MCLG levels, which are not
regulatory levels, but are deemed desirable. In this review of water quality data from 2007 to
2009, the only contaminants from City wells that exceeded a State PHG or a federal MCLG
were uranium, arsenic, copper/lead and coliform bacteria.
This report describes PHGs and MCLGs, describes the data that was reviewed, and presents
the results. Summaries of the analytical and monitoring data reviewed are also attached for
documentation purposes.
WHAT ARE PHGs?
PHGs are set by the OEHHA which is part of Cal -EPA and are based solely on public health risk
considerations. None of the practical risk -management factors that are considered by the
USEPA or the California Department of Public Health (DPH) in setting drinking water standards
(MCLs) are considered in setting the PHGs. These factors include analytical detection
capability, treatment technology available, benefits and costs. The PHGs are not enforceable
and are not required to be met by any public water system. MCLGs are the federal equivalent
to PHGs.
WATER QUALITY DATA CONSIDERED
All of the water quality data collected by our water system between 2007 and 2009 for purposes
of determining compliance with drinking water standards was considered. This data was all
summarized in our 2008, 2009, and 2010 Annual Water Quality Reports which were mailed to
all of our customers.
GUIDELINES FOLLOWED
The Association of California Water Agencies (ACWA) formed a workgroup which prepared
guidelines for water utilities to use in preparing these newly required reports. The ACWA
guidelines were used in the preparation of our report. No guidance was available from state
regulatory agencies.
BEST AVAILABLE TREATMENT TECHNOLOGY AND COST ESTIMATES
Both the USEPA and CDPH adopt what are known as BATs or Best Available Technologies
which are the best known methods of reducing contaminant levels to the MCL. Costs can be
estimated for such technologies. However, since many PHGs and all MCLGs are set much
lower than the MCL, it is not always possible nor feasible to determine what treatment is needed
to further reduce a constituent downward to or near the PHG or MCLG, many of which are set at
zero. Estimating the costs to reduce a constituent to zero is difficult, if not impossible because it
is not possible to verify by analytical means that the level has been lowered to zero. In some
cases, installing treatment to try and further reduce very low levels of one constituent may have
adverse effects on other aspects of water quality.
CONSTITUENTS DETECTED THAT EXCEED A PHG OR MCLG
The following is a discussion of constituents that were detected in one or more of our drinking
water sources at levels above the PHG, or if no PHG, above the MCLG.
Arsenic
The PHG for arsenic is 0.004 parts per billion and the MCL is 10 parts per billion. Low levels of
arsenic have been found in Tustin's groundwater sources less than 2.0 parts per billion from
2007-2009. Tustin also purchases some treated surface water from Metropolitan Water District
(MWD). This source had detections as high as 3.2 parts for billion from 2007-2009. Arsenic is
naturally occurring element found throughout the earth's crust. The levels were below the MCL
at all times. No action is required.
The health risks associated with arsenic are that some people who drink water containing
arsenic in excess of the MCL over many years may experience skin damage or circulatory
problems, and may have an increased risk of getting cancer. The numerical health risk for
carcinogenicity at the 10 parts per billion MCL is 1-2x104 (1-2 in 10,000) and 1x106 (1 in 1
million) at the PHG.
The BATs for arsenic removal at the 95% level are reverse osmosis, ion exchange, activated
alumina, and modified coagulation and filtration. The least expensive BAT for Arsenic in
groundwater is an ion exchange method that would increase treatment costs by approximately
$160-210 per AF of treated water.
Uranium
The PHG for uranium is 0.43 pico curies/liter and the California MCL is 20 pico curies/liter.
Tustin detected low levels of uranium in its groundwater wells as high as 4.4 pico curies/liter,
averaging less than 2.0 pico curies/liter from 2007-2009. Tustin also purchases some treated
surface water from Metropolitan Water District (MWD). This source had detections as high as
3.7 pico curies/liter from 2007-2009. The average over the same period was 3.3 pico
curies/liter. The levels were below the MCL at all times. No action is required.
The health risk associated with uranium is that some people who drink water which contains
uranium in excess of the MCL over many years may have kidney problems or an increased risk
of getting cancer. The numerical health risk for this PHG is 1x106 (1 in 1 million). The
numerical health risk for this MCL is 5x105 (5 in 100,000).
The BATs for uranium removal are ion exchange; reverse osmosis, lime softening or enhanced
coagulation/filtration. The least expensive BAT for uranium in groundwater is an ion exchange
method that would increase treatment costs by approximately $160-210 per AF of treated water.
Coliform Bacteria
During 2007-2009, we collected 20 samples each week for coliform analysis. Occasionally, a
sample was found to be positive for coliform bacteria but repeat samples were negative and
follow up actions were not necessary or required. A maximum of 2.0% of these samples were
positive in any month.
The MCL for coliform is 5% positive samples of all samples per month and the MCLG is zero.
The reason for the coliform drinking water standard is to minimize the possibility of the water
containing pathogens which are organisms that cause waterborne disease. Because coliform is
only a surrogate indicator of the potential presence of pathogens, it is not possible to state a
specific numerical health risk. While USEPA normally sets MCI -Gs "at a level where no known
or anticipated adverse effects on persons would occur', they indicate that they cannot do so
with coliforms.
Coliform bacteria are an indicator organism that are ubiquitous in nature and are not generally
considered harmful. They are used because of the ease in monitoring and analysis. If a
positive sample is found, it indicates a potential problem that needs to be investigated and
follow up sampling done. It is not at all unusual for a system to have an occasional positive
sample. It is difficult, if not impossible, to assure that a system will never get a positive sample.
Other equally important measures that we have implemented include: an effective cross -
connection control program, maintenance of a disinfectant residual throughout our system, an
effective monitoring and surveillance program and maintaining positive pressures in our
distribution system. Our system has already taken all of the steps described by CDPH as "best
available technology" for coliform bacteria in Section 64447, Title 22, CCR.
Lead and/or Copper
There is no MCL for Lead or Copper. Instead the 90th percentile value of all samples from
household taps in the distribution system cannot exceed an Action Level of 15 parts per billion
for lead and 1.3 parts per million for copper. The PHG for lead is 2 parts per billion. The PHG
for copper is 0.17 parts for million.
The category of health risk for lead is damage to the kidneys or nervous system of humans.
The category of health risk for copper is gastrointestinal irritation. Numerical health risk data on
lead and copper have not yet been provided by OEHHA, the State agency responsible for
providing that information.
Based on extensive sampling of our distribution system in 2007-2009, our 90th percentile value
for lead was no greater than 10.0 parts per billion, which is greater than the PHG of 2.0 parts
per billion but less than the Action Level of 15.0 parts per billion. The 90th percentile value for
copper was no greater than 0.53 parts for million which is greater than the PHG of 0.17 parts
per million but less than the Action Level of 1.3 parts per million. Our water system is in full
compliance with the Federal and State Lead and Copper Rule. Based on our extensive
sampling, it was determined according to State regulatory requirements that we meet the Action
Levels for Lead and Copper. Therefore, we are deemed by CDPH to have "optimized corrosion
control' for our system. In general, optimizing corrosion control is considered to be the best
available technology to deal with corrosion issues and with any lead or copper findings. We
continue to monitor our water quality parameters that relate to corrosivity, such as the pH,
hardness, alkalinity, total dissolved solids, and will take action if necessary to maintain our
system in an "optimized corrosion control' condition.
Since we are meeting the "optimized corrosion control' requirements, it is not prudent to initiate
additional corrosion control treatment as it involves the addition of other chemicals and there
could be additional water quality issues raised. Therefore, no estimate of cost has been
included.
RECOMMENDATIONS FOR FURTHER ACTION
The drinking water quality of the City of Tustin Water Services meets all State of California,
Department of Public Health and USEPA drinking water standards set to protect public health.
To further reduce the levels of the constituents identified in this report that are already
significantly below the health -based Maximum Contaminant Levels established to provide "safe
drinking water", additional costly treatment processes would be required. The effectiveness of
the treatment processes to provide any significant reductions in constituent levels at these
already low values is uncertain. The health protection benefits of these further hypothetical
reductions are not at all clear and may not be quantifiable. Therefore, no action is proposed.
The money that would be required for these additional treatment processes might provide
greater public health protection benefits if spent on other water system operation, surveillance,
and monitoring programs.
ATTACHMENT N0.2
MCLs, DLRs and PHGs for Regulated Drinking Water Contaminants
Last Update: December 31, 2009
The following table includes:
CDPH's maximum contaminant levels (MCLs)
CDPH's detection limits for purposes of reporting (DLRs)
Public health goals (PHGs) from the Office of Environmental Health Hazard Assessment
(OEHHA)
(Units are in milligrams per liter (mg/L), unless otherwise noted.)
State
MCL
DLR
PHG or
MCLG
Date of
PHG
Chemicals with MCLs in 22 CCR §64431—Inorganic Chemicals
Aluminum 1 0.05 0.6 2001
Antimony 0.006 0.006 0.02a 1997
Arsenic 0.010 0.002 0.000004 2004
Asbestos (MFL = million fibers per liter; for 7 MFL 0.2 MFL 7 MFL 2003
fibers >10 microns Ion
Barium 1 0.1 2 2003
Beryllium 0.004 0.001 0.001 2003
Cadmium 0.005 0.001 0.00004 2006
Chromium, Total - OEHHA withdrew the 0.05 0.01 withdrawn 1999
0.0025-m /L PHG Nov. 2001
Chromium -6 - MCL to be established -
currently regulated under the total chromium -- 0.001 0.00006
MCL
Cyanide 0.15 0.1 0.15 1997
Fluoride 2 0.1 1 1997
Mercury (inorganic) 0.002 0.001 0.0012 1999
rev2005
Nickel 0.1 0.01 0.012 2001
Nitrate as NO3 45 1 2 45 1997
Nitrite as N 1 as N 0.4 1 as N 1997
Nitrate + Nitrite 10 as N -- 10 as N 1997
Perchlorate 0.006 0.004 0.006 2004
Selenium 0.05 0.005 0.05 --
Thallium 0.002 0.001 0.0001 1999
rev2004
Copper and Lead, 22 CCR 64672.3
Values referred to as MCLs for lead and copper are not actually MCLs; instead, they are
called "Action Levels" under the lead and copper rule
Copper 1.3 0.05 0.3 2008
Lead 0.015 0.005 0.0002 2009
Radionuclides with MCLs in 22 CCR §64441 and §64443—Radioactivity
[units are picocuries per liter (pCi/L), unless otherwise stated; n/a = not applicable]
Gross alpha particle activity - OEHHA
concluded in 2003 that a PHG was not
practical
15
3
(zero)
n/a
ATTACHMENT N0. 2
MCLs, DLRs and PHGs for Regulated Drinking Water Contaminants
Last Update: December 31, 2009
State
MCL
DLR
PHG or
MCLG
Date of
PHG
Gross beta particle activity - OEHHA
concluded in 2003 that a PHG was not
practical
4 mrem/yr
4
(zero)
n/a
Radium -226
--
1
0.05
2006
Radium -228
--
1
0.019
2006
Radium -226 + Radium -228 (addressed
together as one MCL
5
Strontium -90
8
2
0.35
2006
Tritium
20,000
1
1,000
400
2006
Uranium
20
1
0.43
2001
Chemicals with MCLs in 22 CCR §64444 -Organic Chemicals
a Volatile Organic Chemicals OCs
Benzene
0.001
0.0005
0.00015
2001
Carbon tetrachloride
0.0005
0.0005
0.0001
2000
1,2 -Dichlorobenzene
0.6
0.0005
0.6
1997
rev2009
1,4 -Dichlorobenzene -DCB
0.005
0.0005
0.006
1997
1,1-Dichloroethane 1,1 -DCA
0.005
0.0005
0.003
2003
1,2-Dichloroethane (1,2 -DCA)
0.0005
0.0005
0.0004
1999
rev2005
1,1-Dichloroeth leve 1,1-DCE
0.006
0.0005
0.01
1999
cis-1,2-Dichloroeth lene
0.006
0.0005
0.1
2006
trans-1,2-Dichloroeth lene
0.01
0.0005
0.06
2006
Dichloromethane (Methylene chloride)
0.005
0.0005
0.004
2000
1,2-Dichloro ro ane
0.005
0.0005
0.0005
1999
1,3-Dichloropropene
0.0005
0.0005
0.0002
1999
rev2006
Eth (benzene
0.3
0.0005
0.3
1997
Methvi tertiary butyl ether MTBE
0.013
0.003
0.013
1999
Monochlorobenzene
0.07
0.0005
0.2
2003
Styrene
0.1
0.0005
0.1
1,1,2,2 -Tetrachloroethane
0.001
0.0005
0.0001
2003
Tetrachloroethylene PCE
0.005
0.0005
0.00006
2001
Toluene
0.15
0.0005
0.15
1999
1,2,4-Trichlorobenzene
0.005
0.0005
1 0.005
1999
1,1,1 -Trichloroethane (1,1,1 -TCA)
0.2
0.0005
1
2006
1,1,2 -Trichloroethane 1,1 2 -TCA
0.005
0.0005
0.0003
2006
Trichloroethylene (TCE)
0.005
0.0005
0.0017
2009
Trichlorofluoromethane Freon 11
0.15
0.005
0.7
1997
1,1,2-Trichloro-1,2,2-Trifluoroethane (Freon
113
1.2
0.01
4
1997
Vinyl chloride
0.0005
0.0005
0.00005
2000
Xylenes
1 1.75
0.0005
1.8
1997
(b) Non -Volatile Synthetic Organic Chemicals (SOCs)
Alachlor
1 0.002
1 0.001
1 0.004
1997
Atrazine
1 0.001
1 0.0005
1 0.00015
1 1999
ATTACHMENT N0.2
MCLs, DLRs and PHGs for Regulated Drinking Water Contaminants
Last Update: December 31, 2009
State
MCL
DLR
PHG or
MCLG
Date of
PHG
Bentazon
0.018
0.002
0.2
1999
rev2009
Benzo(a)pyrene
0.0002
0.0001
0.000004°
1997
Carbofuran
0.018
0.005
0.0017
2000
Chlordane
0.0001
0.0001
0.00003
1997
rev2006
Dalapon
0.2
0.01
0.79
1997
(re 2009)
1,2-Dibromo-3-chloropropane (DBCP)
0.0002
0.00001
1.7E-06
1999
2,4-Dichlorophenoxyacetic acid (2,4-D)
0.07
0.01
0.02
2009
Di 2-eth Ihex I adi ate
0.4
0.005
0.2
2003
Di 2-eth Ihex I hthalate DEHP
0.004
0.003
0.012
1997
Dinoseb
0.007
0.002
0.014
1997
Di uat
0.02
0.004
1 0.015
2000
Endrin
0.002
0.0001
0.0018
1999
rev2008
Endothal
0.1
0.045
0.58
1997
Ethylene dibromide EDB
0.00005
0.00002
0.00001
2003
GI hosate
0.7
0.025
0.9>
2007
Heptachlor
0.00001
0.00001
0.000008
1999
Heptachlor epoxide
0.00001
0.00001
0.000006
1999
Hexachlorobenzene
0.001
0.0005
0.00003
2003
Hexachloroc clo entadiene
0.05
0.001
1 0.05
1999
Lindane
0.0002
0.0002
0.000032
1999
rev2005
Methoxychlor
0.03
0.01
0.03
1999
Molinate_
0.02
0.002
0.001
2008
Oxam I
0.05
0.02
0.026
2009
Pentachlorophenol PCP
0.001
0.0002
0.0003
2009
Picloram
0.5
0.001
0.5
1997
Polychlorinated biphenyls PCBs
0.0005
0.0005
0.00009
2007
Simazine
0.004
0.004
0.004
2001
2,4,5 -TP Silvex
0.05
0.001
0.025
2003
2,3,7,8-TCDD (dioxin)
3x10$
5x10-9
(O)e
Thiobencarb
0.07
0.001
0.07
2000
Toxaphene
0.003
0.001
0.00003
2003
Chemicals with MCLs in 22 CCR
64533 -Disinfectant B roducts
Total Trihalomethanes
0.08
--
--
--
Bromodichloromethane
--
0.0005
zero
Bromoform
--
0.0005
zero
Chloroform
--
0.0005
0.07
Dibromochloromethane
--
0.0005
0.06
Total Haloacetic Acids
0.06
--
--
--
Monochloroacetic acid
0.002
0.07
Dichloroacetic acid
0.001
zero
Trichloroacetic acid
0.001
0.02
Bromoacetic acid
0.001
--
Dibromoacetic acid
0.001
--
ATTACHMENT N0. 2
MCLs, DLRs and PHGs for Regulated Drinking Water Contaminants
Last Update: December 31, 2009
a. A draft CA PHG of 0.0007 mg/L was published in 2009
b. For informational purposes only --no action needed at this time
c. A draft CA PHG of 0.0005 mg/L was published in 2008
d. A draft CA PHG of 0.000013 mg/L was published in 2009
e. A draft CA PHG of 1x10"9 mg/L was published in 2007
f. Draft CA PHGs for individual trihalomethanes were published in 2009
* OEHHA's review of this chemical during the year indicated (rev200X) resulted in no
change in the PHG.
** Surface water systems only
State
MCL
DLR
PHG or
MCLG
Date of
PHG
Bromate
0.010
0.005
0.0001
2009
Chlorite
1
0.02
0.05
2009
Microbiological Contaminants
T = Treatment Technique)
Coliform % positive samples
%
5
zero
Cryptosporidium**
TT
zero
Giardia Lamblia
TT
zero
Legionella
TT
zero
Viruses
TT
zero
a. A draft CA PHG of 0.0007 mg/L was published in 2009
b. For informational purposes only --no action needed at this time
c. A draft CA PHG of 0.0005 mg/L was published in 2008
d. A draft CA PHG of 0.000013 mg/L was published in 2009
e. A draft CA PHG of 1x10"9 mg/L was published in 2007
f. Draft CA PHGs for individual trihalomethanes were published in 2009
* OEHHA's review of this chemical during the year indicated (rev200X) resulted in no
change in the PHG.
** Surface water systems only
ATTACHMENT NO.3
MAIN STREET TREATMENT PLANT
MONTHLY SUMMARY OF NITRATE ANALYSIS (mg/L)
17`h STREET DESALTER
MONTHLY SUMMARY OF NITRATE ANALYSIS (mg/L)
2007
2008
2009
January
27.8
22.1
19.5
February
31.3
23.9
18.1
March
26.5
23.3
18.8
April
26.9
22.9
17.0
May
24.5
23.0
16.6
June
21.8
22.7
17.8
July
22.3
21.8
20.0
August
23.9
20.4
19.4
September
22.5
20.1
18.3
October
22.5
21.0
19.9
November
29.8
19.3
29.9
December
23.8
20.2
27.7
17`h STREET DESALTER
MONTHLY SUMMARY OF NITRATE ANALYSIS (mg/L)
DISTRIBUTION SYSTEM
COLIFORM MONITORING (%)
2007
2008
2009
January
25.2
35.4
34.8
February
30.3
31.9
33.2
March
30.1
0.0
21.1
April
28.8
0.0
19.8
May
30.1
0.0
33.8
June
30.5
0.0
33.3
July
32.0
0.0
30.0
August
31.4
0.0
34.1
September
32.3
0.0
32.3
October
33.8
28.6
34.7
November
33.7
32.2
31.7
December
34.0
34.9
27.2
DISTRIBUTION SYSTEM
COLIFORM MONITORING (%)
2007
2008
2009
January
1%
0%
2%
February
0%
0%
0%
March
0%
0%
0%
April
0%
0%
0%
May
0%
0%
0%
June
0%
0%
0%
July
0%
0%
0%
August
0%
0%
0%
September
1.2%
0%
0%
October
0%
0%
0%
November
0%
0%
0%
December
0%
1%
0%
ATTACHMENT NO. 4
COST ESTIMATES FOR TREATMENT TECHNOLOGIES
(INCLUDES ANNUALIZED CAPITAL AND O&M COSTS)
Page 1 of 2
Estimated 2007*
Treatment
Unit Cost
No.
Source of Information
Technology
($/1,000 gallons
treated
Granular
Reference: Malcolm Pimie estimate for California Urban Water Agencies, large surface
1
Activated Carbon
water treatment plants treating water from the State Water Project to meet Stage 2 D/D
0.46 - 0.8784
and bromate regulation, 1998
2
Granular
Reference: Carollo Engineers, estimate for VOC treatment (PCE), 95% removal of PC
,
0.21
Activated Carbon
Oct. 1994,1900 gpm design capacity
Granular
Reference: Carollo Engineers, est. for a large No. Calif. surf. water treatment plant ( 90
3
Activated Carbon
mgd capacity) treating water from the State Water Project, to reduce THM precursors,
ENR index = 6262 Francisco
1.017
construction cost (San area) -1992
4
Granular
Reference: CH2M Hill study on San Gabriel Basin, for 135 mgd central treatment faCilit
F 0.394 - 0.5783
Activated Carbon
for VOC and SOC removal by GAC, 1990
5
Granular
Reference: Southern California Water Co. -actual data for "rented" GAC to remove
1.823
Activated Carbon
VOCs (1,1-DCE), 1.5 mgd capacity facility, 1998
6
Granular
Reference: Southern California Water Co. - actual data for permanent GAC to remove
1.178
Activated Carbon
VOCs (TCE), 2.16 mgd plant capacity, 1998
Reference: Malcolm Pirnie estimate for California Urban Water Agencies, large surface
7
Reverse Osmosis
water treatment plants treating water from the State Water Project to meet Stage 2 D/D1
1.367 -2.616
and bromate regulation, 1998
Reference: Boyle Engineering, RO cost to reduce 1000 ppm TDS in brackish
8
Reverse Osmosis
groundwater in So. Calif., 1.0 mgd plant operated at 40% of design flow, high brine line
3.224
cost, May 1991
Reference: Boyle Engineering, RO cost to reduce 1000 ppm TDS in brackish
9
Reverse Osmosis
groundwater in So. Calif., 1.0 mgd plant operated at 100% of design flow, high brine line
1.984
cost, May 1991
Reference: Boyle Engineering, RO cost to reduce 1000 ppm TDS in brackish
10
Reverse Osmosis
groundwater in So. Calif., 10.0 mgd plant operated at 40% of design flow, high brine lin
2.15
cost, May 1991
Reference: Boyle Engineering, RO cost to reduce 1000 ppm TDS in brackish
11
Reverse Osmosis
groundwater in So. Calif., 10.0 mgd plant operated at 100% of design flow, high brine lir
1.66
cost, May 1991
12
Reverse Osmosis
Reference: Arsenic Removal Study, City of Scottsdale, AZ - CH2M Hill, for a 1.0 mgd
5.394
plant operated at 40% of design capacity, Oct. 1991
13
Reverse Osmosis
Reference: Arsenic Removal Study, City of Scottsdale, AZ - CH2M Hill, for a 1.0 mgd
3.19
plant operated at 100% of design capacity, Oct. 1991
14
Reverse Osmosis
Reference: Arsenic Removal Study, City of Scottsdale, AZ - CH2M Hill, for a 10.0 mgd
2.39
plant operated at 40% of design capacity, Oct. 1991
15
Reverse Osmosis
Reference: Arsenic Removal Study, City of Scottsdale, AZ - CH2M Hill, for a 10.0 mgd
1.48
plant operated at 100% of design capacity, Oct. 1991
16
Reverse Osmosis
Reference: CH2M Hill study on San Gabriel Basin, for 135 mgd central treatment facilit
1.485 - 2.616
with RO to remove nitrate, 1990
17
Packed Tower
Reference: Analysis of Costs for Radon Removal... (AWWARF publication),
0.86
Aeration
Kennedy/Jenks, for a 1.4 mgd facility operating at 40% of design capacity, Oct. 1991
18
Packed Tower
Reference: Analysis of Costs for Radon Removal... (AWWARF publication),
0.46
Aeration
Kennedy/Jenks, for a 14.0 mgd facility operating at 40% of design capacity, Oct. 1991
Packed Tower
Reference: Carollo Engineers, estimate for VOC treatment (PCE) by packed tower
19
Aeration
aeration, without off -gas treatment, O&M costs based on operation during 329 days/yea,
0.22
at 10% downtime, 16 hr/day air stripping operation, 1900 gpm design capacity, Oct. 19
Page 1 of 2
ATTACHMENT N0. 4
COST ESTIMATES FOR TREATMENT TECHNOLOGIES
(INCLUDES ANNUALIZED CAPITAL AND O&M COSTS)
Note:
*Costs were adjusted from date of original estimates to present, where appropriate, using Engineering
News Record (ENR) construction indices for Los Angeles and San Francisco.
Page 2 of 2
Estimated 2007*
Treatment
Unit Cost
No.
Source of Information
.
Technology
($/1,000 gallons
treated
Packed Tower
Reference: Carollo Engineers, for PCE treatment by Ecolo-Flo Enviro-Tower air stdppi
20
without off -gas treatment, O&M costs based on operation during 329 days/year at 10%
0.24
Aeration
downtime, 16 hr/day air stripping operation, 1900 gpm design capacity, Oct. 1994
21
Packed Tower
Reference: CH2M Hill study on San Gabriel Basin, for 135 mgd central treatment facilit
0.3680 - 0.6046
Aeration
packed tower aeration for VOC and radon removal, 1990
Advanced
Reference: Carollo Engineers, estimate for VOC treatment (PCE) by UV Light, Ozone,
22
Oxidation
Hydrogen Peroxide, O&M costs based on operation during 329 days/year at 10%
0.45
Processes
downtime, 24 hr/day AOP operation, 1900 gpm capacity, Oct. 1994
Reference: Malcolm Pirnie estimate for CUWA, large surface water treatment plants
23
Ozonation
using ozone to treat water from the State Water Project to meet Stage 2 D/DBP and
0.1051 - 0.2080
bromate regulation,Cryptosporidium inactivation requirements,1998
24
Ion Exchange
Reference: CH2M Hill study on San Gabriel Basin, for 135 mgd central treatment facili
0.4995 - 0.6441
ion exchange to remove nitrate, 1990
Note:
*Costs were adjusted from date of original estimates to present, where appropriate, using Engineering
News Record (ENR) construction indices for Los Angeles and San Francisco.
Page 2 of 2
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This report contains important information about your drinking
water. Translate it, or speak with someone who understands it.
,:,L•,,.1.. '1�.H ai1i Iia as -;-tea
Arabic
Der Bericht enthtlR wlahtige
Informatienen fiber die Wasser-
qualit6t in threr Umgebung. Der
Bericht solde entweder offtrJell
uebersetzt werden, oder
sprechen Sie mit Freunden
oder Bekonnten, die gute
Englischkenntnisse besitzen
German
�°'°i TeCI ��. sgaF oil
7f 5e1 : eL4. o,io v21
l7iL-t-Z'C-TI 0140-IA1L xlrt
41 �r21s�r.�l�.
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Chinese
3+r ftw it '01A * m4T' ilk
Pram ar Kr WFft --fl &
nit t i guar Tr -IRTEc
ori it q%M i
Hindi
Este infonne contiene Informa-
don muy irnportante sobre su
agua potable. Para mas Infor-
ffx=n o traducci6n, favor de
contactor a Mr A. Valenzuela.
Telefono: (714) 573-3382,
Spanish
Ce rapport contient des
Informations importantes sur
valre eau potable. Tradu'seNe
ou parlez en avec queou'un
out le comprend ben.
French
-OM41.111 glut om 14*
T01t, P1;3tk«#T6
Japanese
Ban boo coo cd ghi nhiing chi
liet quan trqrg ve phAm chat
msec trong tong dong quy vi.
Hay nhb ngua thbng dich, hoac
Mi mot ngud ban t i@t r6 ve van
de nay.
Vietnamese
City of Tustin
Water Services
i 300 Centennial Way
Tustin, California 92780
N"IF-41S
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The Continuing Quality of Your Water is Our Primary Concern
Drinking Water Fluoridation
Fluoride has been added to U.S. drinking water supplies since 1945.
Of the 50 largest cities In the U.S., 43 fluoridate their drinking
water. In December 2007, the Metropolitan Water District of
Southern California joined a majority of the m ion's public water
suppliers In adding Fluoride to drinking water in order to prevent
tooth decay. In line with recommendations from the CDPH, as wen
as the U.S. Centers for Disease Control and Prevention,
Metropolitan adjusted the natural fluoride level In Imported treated
water from the Colorado River and State Project water to the optimal -
range for dental health of 0.7 to 1.3 parts per million. Our local
water is not supplemented with fluoride. Fluoride levels In drinking
water are Hmlted under California state regulations at a maximum
dosage of 2 parts per million.
There are many places to go for additional Information about the
fluoridation of drinking water.
U.S. Centers for Disease Control and Prevention
1-800.232.4636
www cdc.gov/Oralhealtb/pubhcatlons ftasbeets/
American Dental Assodatlort
www.ada.org/publlcttopks/fluorfde/indey-asp
American Water Works Association-
www.awwaorg
For more Information about Metropontan's fluoridation program,
please contact Edger G. Drmally at (213) 2175709 or at
edymaltytsmwdh2o.com..
Source Water Assessments
Imported (Metropolitm) Water Assessment
In December 2002, Metropolitan Wider District of Southern California,
completed its source water assessment of its Colorado Riva ad Stafe Wase,�
Project supplies, Colorado River supplies tie considered to be most vulnet<
able to recreation, whoMerm wader rusca, increasing urbanWtion to ibex
watershed and wastewater. Side Water Project supp8a are considered to be
most vulnerable to urblavistorm water runoff, wildlife, agriculture, recreation
and wastevoi A copy of the assessment can be ohMmed by contacting.
Metropolitan by phone M (213) 217-6850.
Groundwater Assesatneus' .
An assesamenf of the droddhgwater sources for the City of Tonto Wan
Services we; completed in December 2002. The groundwater soumm are
considered mon vutneraNe to the lo8hwmg activities not associated with. =
detected contemimnfe Confirmed inking undengrwnd storage tanker dry
cleamn, and pas sty rens The groundw W assns m considered most
vulnerable to the following activities amchted with cotmmbunts detected.
in the water supply: rmyvn corgam u t plumes, Mantic agricultural, .
activities and application of fardifters, and sewer collectim eye tonne, .. 3
A copy of the complete anesseetY Is na8able as Department at public
Heahb Office of DtminmaWam Same Ana District, 28 Call: Coater Plaza
Room 325, Same Any, CA 92701. Yw may request a summary of the assns,
ment by conteamg the city of Thrix W54teb Services at (714) 57!.3382:.. - -
Want Additional Information? I;t
There's a wealth of information on the Internet about drinking
water quality and water issues in general. Some good sites—
both local and national — to begin your own research are:
Municipal Water District of Orange County
www.mwdoccom
Orange County Water District
wwwocvvd.com _
Metropolitan Water District of Southern California
www.mwdh2o.co n
California Department of Public Health,
Division of Drinking Water and Environmental Management
www.cciph. ca.gov/cenliddrinkingwater
U.S. Environmental Protection Agency
www epa.gov/safewater/
what are Water Qualify Standareler
Drlvidq eano moaaads esublbMd by USEPA sd CDPH ret Eode fm dionon,Ilea mapafleet
cavumet Nesse or ealb,& erodes of atobl' iwart TM row pop M. s6mw aM
t sixene it e, d rate, 0aa14 exabese
• Mudeve Ceelaiunt Leed tmcLis The We" biddy mn=:Me the isYbwd in
d iney ware Prasad Mai lie ser as one In Ne Mr. Ior MC7Gs1. Y ec0000rlo.ly ad
tuhafeale teadble.
• Medmvm MINK mgYY[uM Livid (Mamb TM Intel at. NAn:edaot add far weer
trn varhocogcotiesandedainauoer4lap.
•s—ei Mclean tee to protect, that; tmY, ad wp--.t adsion, axes. -
• ur
Mry l eddy YAW aleadere MCIA for cootam2am shot lined Keith aace Win dxk
monhodog erxs d epordq kvinn and war treaeee aegonmmY
•
Residuary Apiece Level (QThe toacmmmoo Or a mnomima4 tich,I antled,
brans ixalmmt or ether novinine., Neo wxer xme eue felon
How are Camulmiumts Meseuredir
Mutt Is oneledad tend mug.— tad tit cmlanalamnsx meonnedN
Pam w mile. Ippeol a mLlgama W. Ba',l.yj
• pus per billion Ippb( tee lanospee per ter WA
• puha per"Mon(ppri me
mlyamtperel.N{
II Nis b Nticclt f Ilra�e tWW[ smut Nee mmpatlwna
pMawonfigm Pub per balm APa per rhea;
(PPm r -VIN yppborPrltu 6svror e0.
•3. drop In 42 game 3 imp In 14,000lido. IOdmpaalnx Ma4sVdpw _
• Ixasd!nl2dap Ianooda32yea? l sewed b 32,000 teat
I:nd.la :0m0. 1aN!016,000 rase • 1'me 1.:6.111. m
What it a water Qnaaty Cnalr
In addLon to mandaaryteW Today tondan, USEPA and CDPH lone sewlrmtarywee,
guellf goat for some m.hminawe wsmr tram gale lie often tee rt soG fw IMY rhal Way
are not ininabY IN pence and ax cot Areal, mer,ceaki. N—ftlow, sada goat prodde
useful an"onb and di:eNon M soba eeentee pmmces ne Haatm ids xppn fond. _
orae ryes d vote, 9vaBD' in"
• Meshes-Ceebel— LervaneW (Maq: Thos lead d a cmheaar f ddoWrgvn x
beloe whico there em Y..ee a infected riot m hexa, Ni w en by USDA.
• Made-R.Wesl Deefet4m ting one (MRDIa)n Ire kid da daarertaxWed lrvlYe
ueatrAd hehwwbka :h.e Y m)me'] orrpCdtW f aealb. 1111114lie sea bli L EPA
•Nadir HeeW Gallnok TM kstl dacoonwM[YdbuegweW OebwM:ldr Ne:ebe
awmaegMedfdtm OdN. PisewbPOa CaJMLYaeNom-."PmWd.AWrcT
Nitrate Advisory
The maximum allowable level of nitrate In drinking water, also called
the muimum contaminant level or MCI, is 45 milligrams per liter as
nitrate (stall as NCg). The nitrate MCL cat also be expressed as 10
milligrams per liter as nitrogen (mg/6 as N). Both numbers are
equivalent values. At times, nitrate in your tap water may have
exceeded one-half the MCL, but it was new greater than the MCL
The following advisory Is issued because in 2007 we recorded nitrate
measuremeats in the drinking water supply which exceeded one-half
the nitrate MCL
"Nitrate in drinking water at levels above 45 mg(L (or the equivalent
10 mg/L as N) is a health risk for infants of less than six months of
age. Such nitrate levels In drinking water can interfere with the
capacity of the infant's blood to carry oxygen, resulting in a serious
illness; symptoms include shortness of breath and blueness of the
skin. Nitrate levels above 45 parts per millic n may also affect the
ability of the blood to carry oxygen in other individuals, such as
pregnant women and those with certain specific enzyme deficiencies.
If you are carr for an intent, or you are pregnant, you should ask
advice from your health care provider."
Radon Advisory
Radon is a radioactive gas that you can't see, taste, or acres. It Is
found throughout the U.S. Radon can move up through the ground
and into a home through socio and holes in the foundadoa Radon.
can bund up to high levels In as types of homes. Radon can also
get Into indoor air when released from tap water from showering,
washing dishes, and other household activltles. Brea big air remain -
mg radon can lead to turps cancer. DnWdng water containing radon
could increase the risk of stomach cancer. Compared to radon
entering the home through sc ik radon entering the home through
you tap water Is a small source of radon in Indoor air. For the most
recent set of samples collected in 2004, the maximum amount of
Radon detected In your water was 416 piracurles per liter which is
equivalent to 0.04 pirncurle per liter of Radon In indoor ah of a
typed family residence. The USEPA Action Level for radon in
indoor air is 4.0 plc curies per Iver. If you am concerned about-.
radon in your home, test the air in yore home. Fix your home If
the level of radon Is 4 picocuries per liter of ah or higher. Them
are simple ways to fix a radon problem that aren't too costly. For
additional information, call the State radon program or call USEPAs
Radon Hotline 0-80MOSRADOM.
2007 City of Tustin Groundwater Quality
PHG Average Range of MCL Mast Recent Typical Source
Chemical MCL (MCLG) Amount Detections Vidation7 Samolhra Dab of Contaminant
2007 City of 7lrstin Distribution System Water Quality
Dimnfortion MCL Avenge Range of MCL Typical Source
Byproducts (MRDI/MRDLG) Amount Detections Violation? of [cont—in—
=271
ons—intra
ictal fihdamerhanes(ppb) 80 15 NO 40 No ewmdxnd dlbrim d.nfenian
Ham— 6n 17 _._— un..ra a", n.......e....,<w.C... x.�c...:.•
luedg(mu) 5 017 015-019 No Ervatn of namrd dttmm
5'n Wwmn Mas R yztem.-Zs ed aaanrAl ota;M bmeman x4 hob adz'mrY lila
M6;ry ;ea mnridr'ptdo[odwatl^.,nb'tlaY. Cnf xtl adwwre cot dnet'eb.
Mot-Manm.m ",.Lal naear.mr Lia; rnae Readw tea aer;x+lealew ry r<anagme,. wen; Nt-ria dream
'Cmramkarrh onpi— try.-ordm 11a d1. makdnae or nal— mane odaccohd.
Nat Regdatd
axtedd Quality MCL MCLG High— Monthly Percent Positives MCL VkA-7
typical source of CanGminent
coral Coldonn Banana 5% 0 1.2% No
Noway present a the enio nment
—
mem u",�ea o�u�fa"�.mr'nrm wr;maa.a.
Hardness, halal (pp.)
,�RaSmirrme�.MNo`aainr wdr6mampn, orwrLn mrr yew rghrw,at.tga, r,nmimmw m.h Ma.iamigr.
_- nla
Lead and Copper Action Levels at Residential Taps
_ 158 228
-
Action level Health 90th percentile Sites Exceeding AL 7 AL
Au R (asking ofnnacond depom. _
(At) Goal Valu. Number of Sites vol tion?
Typical Source of Contaminant
Lead b) 15 2 7.0 0143 No
"I". of hoaxhdd pl robing
Capps ppm) 1 3 017 053 0143 —Na---C--.V
sad m �m'���,aom �aamoarllkr iealw�m� e�rw;f<x �mdr�e : �;M woo, r<vrcr ar,gr�leKl
_. _..
a mqux«r aor le„I b dw mMxmm qra mrran.mn: waLh, a rcaeaea'+am.;nar 10 or,rer q+o-e wnpa�;riygos �rea;manorgmn rn,Ymern her, w,:e,.s<em n,s iln..
2007 Metropolitan Water District of Southern California Treated Surface Water
PHG, or Avenge Range o MCL
Chemical Met (MCLG) Amount Detections Violation?
TVdcal Sourer of Cantamnant
oonc non (cpm) 1 -2. 2. 0 6 ON NO 01 No Tr brim, process residue missal deposits
Anenc(ppb) 10 _-. 0004 -... 2 NO 28 No-t-n.ufnamra - -_.
Baao(ppnr� --- -- 1 -. 2 Al -_. ND 01 No _-trasand r.anal depoea
Flu de(pp.) nateally—flog -- 2 1 -- 02 01-02 No Emson of nafral depoab
Huoi de (ppm) maunmt.dated _ Optimal Range O ] i t 06-09 - No -- -- wase 'odd.
hr carnal Mdth ----
NitmhasN(ppm_f_-. Io 10 -- 05 ND 07 --_ Naodsue nbroR and sewage -----
N,,hloah(ppb) - _ 6 ---... 6 _ <4 ND -4.1(1) No ndocdd wash pinches --.._-
Calc um (ppm) -
Nat Regdatd
nla
-
- 46
36 55
n/a
_pointe exh,,—f no natural depovt,
Hardness, halal (pp.)
Not Regulated
_- nla
701
_ 158 228
-
Na
Au R (asking ofnnacond depom. _
Hardn.,,taal(granogal)
-
No, Regulated
-
_- or.
12
92 13
_
n/a
---Runoff 1—knif til—A depam -- --
M1lagneHum (ppm)
Not Aegdatd
ora
21
- 16-23
_-
n/a
R-11 or leaching for, tarsal deposits -- - --
PH (pH unto)
- -
Not Reg,datd
n,a
82
-
-- 81-83
-- n/a --_.
Hy" ion tmanha.m - --
Potassium 1ppm)
- Not Aegr"ated
rue
- - • 39
-.. 34-44
- Na
Runoff aka fiirg hon nxn.1 daoaa
Sodium (pp g
Not RegWared
Wo
- 83
- 73 91
n/a -
Runoff a learhirg (roo, natu.I deposits -
Total Organic Cartxm (ppm)
Ntt Regulated
TT
2 2
1 9 2 9
n/a
Va amml and manmade mortes
Vaned um (mb)
Not Regulated
In
13
- No 3 7
-- n/a
R-0 or I.,hirg hoes tussal depcon - -- -
(n Perttbare de;enmehana
LSCMLrrmJmed oar.
Marian gauk rea:'m 20m.MNbae
wen rad de;eaN rlea,Mwmn
saml4es nr.n2mr.
pro ax b�Iliwc aPn oar., -pe a1' ;aw aam.ar e' acyl- IRoc lie u.rr ...ma to dr:m c'or.s µmrorcm - wgxm wrrmmmeat
ra pphodhk; 151 �--InrgelW Sama'mn Neq C relvir pupgsq Mit aid ..art—,( .) lydenlea onat fH6-caeaMa rubR I—Coat
Turbidity- combined film effluent Treatment Technique Turbidity Meawremearts TT Violation? Typical Source of contaminant
1) H gh.t will, mrbidty meamrmient 0.3 NTU 0.05 No SOA runoff
2) Pt, tentage of samples less than 03 NTU 95% 100% No Son!
pr' _...
Tur6dY Wopoa dobe �waarna ram Carl w v soars n rhd qr 'rmlWe Mmr'W m+rumc --... ....
q w WMrV'e� sae d eyelid a'Oav'mand m reawx'M1r kwl aaxnmmama r linen ti'n'o1P un
a
ora*r tar err aAiLah sed mme.aan Mym9ee m meavaearxw.
Ine <Jiky of
Tu i 11
I u d
Ima le
U Q 11
Your 2009
Water Quality Report
Drinking Water Quality
ince 1990, California water utilities have been providing an
annual Water Quality Report to their customers. This year's
report covers calendar year 2008 water quality testing, and has
been prepared in compliance with regulations called for in the
1996 reauthorization of the Safe Drinking Water Act. The
reauthorization charged the United States Environmental
Protection Agency (USEPA) with updating and strengthening the
tap water regulatory program.
USEPA and the California Department of Public Health (CDPH)
are the agencies responsible for establishing drinking water
quality standards. To ensure that your
tap water is safe to drink, USEPA and
CDPH prescribe regulations that limit
the amount of certain contaminants in
water provided by public water
systems. CDPH regulations also
establish limits for contaminants in
bottled water that must provide the
same protection for public health. The
federal Food and Drug Administration
(FDA) also sets regulations for bottled
water.
The City of Tustin vigilantly
IMIAMMM
safeguards its water supply and, as in years past, the water
delivered to your home meets the standards required by the state
and federal regulatory agencies. In some cases, the City goes
beyond what is required by testing for unregulated contaminants
that may have known health risks. For example, the Orange
County Water District (OCWD), which manages our groundwater
basin, monitors our groundwater for the solvent 1,4 -dioxane.
Unregulated contaminant monitoring helps USEPA determine
where certain contaminants occur and whether it needs to
establish regulations for those contaminants.
y
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mom° •c .. v 5 S b z` 3 v� 3 V� �s �� E E
The Quality of Your
Water is Our
Primary Concern
Radon Advisory
Radon is a radioactive gas that you can't see, taste, _
or smell. It is found throughout the U.S. Radon can
move up through the ground and into a home through
cracks and holes in the foundation. Radon can build up
to high levels in all types of homes. Radon can also get
into indoor air when released from tap water from
showering, washing dishes, and other
household activities. Breathing air
containing radon can lead to lung cancer.
Drinking water containing radon could
increase the risk of stomach cancer.
Compared to radon entering the home
through soil, radon entering the home
through your tap water is a small source of
radon in indoor air. The USEPA Action
Level for radon in indoor air is 4.0
picocuries per liter. Radon from your tap
water contributes no more than 0.1
picocurie per liter in your indoor air. If you
are concerned about radon in your home,
test the air in your home. Fix your home if
the level of radon is 4 picocuries per liter
What are Water Quality Standards?
Drinking water standards established by USEPA and CDPH set
limits for substances that may affect consumer health or
aesthetic qualities of drinking water. The chart in this report
shows the following types of water quality standards:
r Maximum Contaminant Level (MCL): The highest level
of a contaminant that is allowed in drinking water. Primary
MCLS are set as close to the PHGs (or MCLGs) as is
economically and technologically feasible.
P Maximum Residual Disinfectant Level (MRDL): The
level of a disinfectant added for water treatment that may
not be exceeded at the consumer's tap.
r Secondary MCLS are set to protect the odor, taste, and
appearance of drinking water.
P Primary Drinking Water Standard: MCU for contami-
nants that affect health along with their monitoring and
reporting requirements and water treatment requirements.
r Regulatory Action Level (AL): The concentration of a
contaminant, which, if exceeded, triggers treatment or other
requirements that a water system must follow.
How are Contaminants Measured?
Water is sampled and tested throughout the year.
Contaminants are measured in:
I pans per million (ppm) or milligrams per liter Imgl
I parts per billion (ppb) or micrograms per liter (µgA)
r parts per trillion (ppq or nanograms per liter Ing/1)
What is a Water Quality Goal?
In addition to mandatory water quality standards, USEPA and
CDPH have set voluntary water quality goals for some con-
taminants. Water quality goals are often set at such low levels
that they are not achievable in practice and are not directly
measurable. Nevertheless, these goals provide useful guide-
posts and direction for water management practices. The
chart in this report includes three types of water quality goals:
r Maximum Contaminant Level Goal (MCLG): The level
of a contaminant in drinking water below which there is no
known or expected risk to health. MCLGs are set by USEPA.
P Maximum Residual Disinfectant Level Goal (MRDLG):
The level of a disinfectant added for water treatment below
which there is no known or expected risk to health. MRDLGs
are set by USEPA.
i Public Health Goal (PHG): The level of a contaminant in
drinking water below which there is no known or expected
risk to health. PHGs are set by the California Environmental
Protection Agency.
of air or higher. There are simple ways to fix a radon
problem that aren't too costly. For additional
information, call the State radon program or call
USEPAs Radon Hotline (800) SOS -RADON.
Nitrate Advisory
At times, nitrate in your tap water may have
exceeded one-half the MCL, but it was never greater
than the MCL. The following advisory is issued because
in 2008 we recorded nitrate measurements in the
drinking water supply which exceeded one-half the
nitrate MCL.
"Nitrate in drinking water at levels above 45
milligrams per liter is a health risk for infants of less
than six months of age. Such nitrate levels in drinking
water can interfere with the capacity of the infant's
blood to carry oxygen, resulting in a serious illness;
symptoms include shortness of breath and blueness of
the skin. Nitrate levels above 45 parts -per -million may
also affect the ability of the blood to carry oxygen in
other individuals, such as pregnant women and those
with certain specific enzyme deficiencies. If you are
caring for an infant, or you are pregnant, you should
ask advice from your health care provider."
Drinking Water Fluoridation
Fluoride has been added to U.S. drinking water
supplies since 1945. Of the 50 largest cities in the
Alpha Radiation (pCi/L) 15 _ (0)_ <3 ND - 5.2 No 2008 Erosion of Natural Deposits _
Combined Radum (Ki/L) 5 (0) <1 ND -1.1 No 2004 Erosion of Natural Deposits
- -- --- —-- ---
Uranium (pCi/U 20 0.43 2.1 1.1 - 4.4 No 2008 Erosion - of Natural Deposits
Inorganic Chemicals
Arsenic (ppb) 10 0.004 <2 ND - 2.0 No 2007 Erosion of Natural Deposits
Barium (ppm) 1 2 <0.1 ND -0.1 No 2007 Erosion of Natural Deposits
4.1 1.3-7.4
<4 ND -8.0
Chloride (ppm)
500'
n/a
- 236
2007
Erosion of Natural Deposits
Color (color units)
15'
n/a
__110______55
<1
_
ND -3
__No_
No
2007
Erosion of Natural Deposits
Specific Conductance (pmho/cm)
1,600`
n/a
1,005
647- 1,710
No
2007
Erosion of Natural Deposits
Sulfate (ppm)
Sol
n/a
137
86-229
No
2007
Erosion of Natural Deposits
Total Dissolved solids (ppm)
1,000'
n/a
605
P2 - 1110
No
2007
Erosion of Natural Deposits
Turbidity (ri
5`
n/a
0.4
0.2-0.8
No
2007
Erosion of Natural Deposits
ppb = parts -per -billion; ppm = parts -per -million; pCill. = picoCuries per liter; mu - nephelometric turbidity units; ND = not detected; n/a = not applicable;
< - average is less than the detection limit for reporting purposes; MCL = Maximum Contaminant Level; (MCLG) = federal MCL Goal; PHG = California Public Health Goal
pmholan = micromho per centimeter 'Contaminant is regulated by a secondary standard to maintain aesthetic qualities (taste, odor, color).
Turbidity (ntu) 5` 0.19 0.17 - 0.23 No Erosion of Natural Deposits
Sixteen locations in the distribution system are tested quarterly for total trihalomethanes and haloacetic acids; twenty locations are tested monthly for color, odor and turbidity.
Color and odor were not detected. MRDL = Maximum Residual Disinfectant Level; MRDLG = Maximum Residual Disinfectant Level Goal; ntu = nephelometric turbidity units; ND = not detected
'Contaminant is regulated by a secondary standard to maintain aesthetic qualities (taste, odor, color).
Total Coliform Bacteria 5% 0 1.0% No Naturally present in the environment
No more than 5% of the monthly samples may be positive for total coliform bacteria.
The occurrence of 2 consecutive total coliform positive samples, one of which contains fecal coliform/Ecoli, constitutes an acute MCL violation.
Lead and copper at -the -tap samples were collected from 43 residences in September 2006. Lead was detected in two homes and copper in 41 homes.
None of these samples exceeded the lead or copper acnan level. A regulatory action level is the concentration of a contaminant which, if exceeded
in more than 10 percent of the samples, triggers treatment or other requirements that a water system must follow.
U.S., 43 fluoridate their drinking water. In December
2007, the Metropolitan Water District of Southern
California joined a majority of the nation's public water
suppliers in adding fluoride to drinking water in order
to prevent tooth decay. In line with recommendations
from the CDPH, as well as the U.S. Centers for Disease
Control and Prevention, Metropolitan adjusted the
natural fluoride level in imported treated water from
the Colorado River and State Project water to the
optimal range for dental health of 0.7 to 1.3 parts per
million. Our local water is not supplemented with
fluoride. Fluoride levels in drinking water are limited
under California state regulations at a maximum dosage
of 2 parts per million.
There are many places to go for additional informa-
tion about the fluoridation of drinking water.
U.S. Centers for Disease Control and Prevention
1-800-232-4636
www.cdc.gov/Oralhealth/publications/factsheets/
American Dental Association
www.ada.org/public/topics/fluoride/l*ndex.asp
American Water Works Association
www.awwa.org
For more information about Metropolitan's
fluoridation program, please contact Edgar G. Dymally
at (213) 217-5709 or at edymally�mwdh2o.com.
Want Additional Information? There's a wealth of information on the internet about Drinking Water
Quality and water issues in general. Some good sites - both local and national - to begin your own research are:
City of Tustin: www.tustinca.org • Municipal Water District of Orange County: www.mwdoc.com
Orange County Water District: www.ocwd.com • Water Education Foundation: www.watereducation.org
Metropolitan Water District of Southern California: www.mwdh2o.com
California Department of Public Health, Division of Drinking Water and Environmental Management
www.cdph.ca.gov/certlic/drinkingwater
U.S. Environmental Protection Agency: www.epa.gov/safewater/
California Department of Water Resources: www.water.ca.gov
Water Conservation Tips: www.bewaterwise.com • www.wateruseirMsely.com
Water conservation doesn't
have to inconvenience
our lives to be effective.
Simple changes in how
we do our daily tasks can
have a tremendous
impact on our water
usage. A little effort can
save a lot of water.
Alpha Radiation (pCi/L) 15 (0) 5.6 3.8-9.3 No Erosion of Natural Deposits
or
Uranium (pCi/p 20 0.42 3.3 2.9-3.7 No Erosion of Natural Derrosits
Aluminum (ppm)
1
0.6
0.16
0.08-0.28
No
Treatment Process Residue, Natural
Arsenic (ppb)
10
0.004
2.4
NO
- 2.9
No
Erosion of Natural Deposits
Barium (ppm)
1
2
0.12
0.11
-0.12
No
Erosion of Natural Deposits
Fluoride (ppm) treatment-related
Control Range 0.7
Optimal Level 0.8
- 1.3 ppm
ppm
0.8
0.6-0.9
n/a
No
Water Additive for Dental Health
Nitrate as N0, (ppm)
45
45
2.2
NO
- 2.6
No
Agriculture Runoff and Sewage
Secondary Standards* - Tested in 2008
n/a
15 _
13-
18
n/a
Runoff or Leachinq from Natural Deposits
Aluminum (ppb)
200'
600
164
78-280
No
Treatment Process Residue, Natural
Chloride (ppm)
500'
n/a
96
92-103
No
Runoff or Leaching from Natural Df
Color (color units)
15*
n/a
2
1
-2
NoRunoff
or Leaching from Natural Df
Odor (thre hold odor number)
Specific Conductance (pmholcm)
3*
1,600'
nla
n/a
2
947
837 -
2
1,080
No
No
Naturally occurring Organic Materia
Substances that Form Ions in Water
Sulfate (ppm) _ . _
Total Dissolved Solids (ppm) .,
Turbidity it
I d h .
500'
1,000*
5*
n/a
nia
n/a
212
569
0.05
_ 170-272
505
0.04-0.05
668
No__
No
No
Runoff or Leaching from Natural De
Runoff or Leachinq from Natural De
Runoff or Leaching from Natural De
Unregu ate C ern ca s -Tested to 2008
Alkalinity, total as CaCO3 (ppm)
Not Regulated
110
100-
121
n/a
Runoff or Leaching from Natural Deposits
Boron (ppb)
-n/a
Not Regulated
-
n/a
140
1 30
- 150
n/a
Runoff or Leaching from Natural Deposits
Calcium (ppm)
Not Regulated
n/a
61
55-72
n/a
Runoff or Leaching from Natural Deposits
Hardness, total as CaCO3 (ppm)
Not Regulated
n/a
_
257
226-300
n/a
Runoff or Leaching from Natural Deposits
Hardness, total (grains/gal)
Not Regulated _
n/a
15 _
13-
18
n/a
Runoff or Leachinq from Natural Deposits
Magnesium (ppm)
Not Regulated
n/a
25
22-29
n/a
Runoff or Leaching from Natural Deposits
-
N Nltrosodlmethlyamine NDMA (ppt)
Not Regulated
n/a
11ND
--
- 21
-
n/a
---
Byproduct of Drinking Water Disinfection
pH (pH units) _ _-
Nat Regulated
n/a
8.1
8.0-8.2
n/a
---
Hydrogen coIConcentration
Potassium (ppm)
Not Regulated
n/a
4.5
4.1
- 4.9
n/a
Runoff or Leaching from Natural Deposits
-
Sodium (ppm)
.__
Not Regulated
_
n/a
_
94
85-106
n/a
Runoff or Leaching from Natural Deposits
Total Organic Carbon (ppm)
Not Regulated
TT
2.3
1.9-2.5
n/a
Various Natural and Man-made Sources
Vanadium ,ppb)
Not Regulated
n/a
-
3.8
3.5
- 4.0
n/a
-
Runoff or Leaching from Natural Deposits
ppb = parts -per -billion; ppm = parts -per -million; ppt = parts -per -trillion;
pCi/L = picocuries
per liter; Out
= nephelometric
turbidity units; pmholcm = micromhos per centimeter;
ND = not detected; < = average is less than the
detection limit for reporting purposes;
MCL = Maximum
Contaminant Level; (MCLG)
= federal MCL Goal; PING = California Public Health Goal;
n/a = not applicable; TT = treatment technique *Contaminant is regulated by a secondary standard.
1) Highest single turbidity measurement
0.3 NTU
0.05
No_
Soil Run-off
tage
2) Percenof samples less than 0.3 NTU 95%
100%
_
No
Soil Run-off
Turbidity is a measure of the cloudiness of the water, an indication of particulate matter, some of which might include harmful microorganisms.
Low turbidity in Metropolitan's treated water is a good indicator of effective filtration. Filtration is called a "treatment technique" (TT).
A treatment technique is a required process intended to reduce the level of contaminants in drinking water that are difficult and sometimes impossible to measure directly
Source Water Assessments
Imported (Metropolitan)
Water Assessment
In December 2002, Metropolitan Water District of
Southern California completed its source water
assessment of its Colorado River and State Water
Project supplies. Colorado River supplies are
considered to be most vulnerable to recreation,
urban/storm water runoff, increasing urbanization
to the watershed and wastewater. State Water
Project supplies are considered to be most
vulnerable to urban/storm water runoff, wildlife,
agriculture, recreation and wastewater. A copy of
the assessment can be obtained by contacting
Metropolitan by phone at (213) 217-6850.
Groundwater Assessment
An assessment of the drinking water sources
for the City of Tustin Water Services was
completed in December 2002. The groundwater
sources are considered most vulnerable to the
following activities not associated with detected
contaminants: Confirmed leaking underground
storage tanks, dry cleaners, and gas stations. The
groundwater sources are considered most
vulnerable to the following activities associated
with contaminants detected in the water supply:
Known Contaminant plumes, historic agricultural
activities and application of fertilizers, and sewer
collection systems.
A copy of the complete assessment is
available at Department of Public Health Office
of Drinking Water, Santa Ana District, 28 Civic
Center Plaza Room 325, Santa Ana, CA 92701.
You may request a summary of the assessment by
contacting the City of Tustin Water Services at
(714) 573-3382.
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Your 2010
Water Quality Report
Drinking Water Quality
ince 1990, California water utilities have been providing an
annual Water Quality Report to their customers. This year's
report covers calendar year 2009 water quality testing, and has
been prepared in compliance with regulations called for in the
1996 reauthorization of the Safe Drinking Water Act. The
reauthorization charged the United States Environmental
Protection Agency (USEPA) with updating and strengthening the
tap water regulatory program.
USEPA and the California Department of Public Health (CDPH)
are the agencies responsible for establishing drinking water
quality standards. To ensure that your tap water is safe to drink,
USEPA and CDPH prescribe regula-
tions that limit the amount of certain
contaminants in water provided by
public water systems. CDPH
regulations also establish limits for
contaminants in bottled water that
must provide the same protection for
public health. The federal Food and
Drug Administration (FDA) also sets
regulations for bottled water.
The City of Tustin vigilantly safe-
guards its water supply and as in
years past, the water delivered to your home meets the standards
required by the state and federal regulatory agencies. In some
cases, the City goes beyond what is required by testing for
unregulated contaminants that may have known health risks. The
Orange County Water District (OCWD), which manages our
groundwater basin, tests our groundwater for regulated and
unregulated constituents.
Unregulated contaminant monitoring helps USEPA determine
where certain contaminants occur and whether it needs to
establish regulations for those contaminants.
,s
.3
years past, the water delivered to your home meets the standards
required by the state and federal regulatory agencies. In some
cases, the City goes beyond what is required by testing for
unregulated contaminants that may have known health risks. The
Orange County Water District (OCWD), which manages our
groundwater basin, tests our groundwater for regulated and
unregulated constituents.
Unregulated contaminant monitoring helps USEPA determine
where certain contaminants occur and whether it needs to
establish regulations for those contaminants.
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The Quality our Y
of are limited under California state regulations at a
1 I maximum dosage of 2 parts per million.
Water is Our There are many places to go for additional informa-
Primary Concern tion about the fluoridation of drinking water.
U.S. Centers for
Drinking Water Fluoridation
Fluoride has been added to U.S. drinking water
supplies since 1945. Of the 50 largest cities in the
U.S., 43 fluoridate their drinking water. In December
2007, the Metropolitan Water District of Southern
California joined a majority of the nation's public water
suppliers in adding fluoride to drinking water in order
to prevent tooth decay. In line with recommendations
from the CDPH, as well as the U.S. Centers for Disease
Control and Prevention, Metropolitan adjusted the
natural fluoride level in imported treated
water from the Colorado River and State
Project water to the optimal range for
dental health of 0.7 to 1.3 parts per million.
Our local water is not supplemented with
fluoride. Fluoride levels in drinking water
What are Water Quality Standards?
Drinking water standards established by USEPA and CDPH set
limits for substances that may affect consumer health or
aesthetic qualities of drinking water. The chart in this report
shows the following types of water quality standards:
a Maximum Contaminant Level (MCL): The highest level
of a contaminant that is allowed in drinking water. Primary
MCLS are set as close to the PHGs (or MCLGs) as is
economically and technologically feasible.
o Maximum Residual Disinfectant Level (MRDL): The
highest level of a disinfectant allowed in drinking water.
There is convincing evidence that addition of a disinfectant
is necessary for control of microbial contaminants.
F Secondary MCLs are set to protect the odor, taste, and
appearance of drinking water.
P Primary Drinking Water Standard: MCIs for contami-
nants that affect health along with their monitoring and
reporting requirements and water treatment requirements.
P Regulatory Action Level (AL): The concentration of a
contaminant, which, if exceeded, triggers treatment or other
requirements that a water system must follow.
How are Contaminants Measured?
Water is sampled and tested throughout the year.
Contaminants are measured in:
i parts per million (ppm) or milligrams per liter milli
r parts per billion (ppb) or micrograms per liter (µg/1)
t parts per trillion (ppt) or nanograms per liter (rig)
What is a Water Quality Goal?
In addition to mandatory water quality standards, USEPA and
CDPH have set voluntary water quality goals for some con-
taminants. Water quality goals are often set at such low levels
that they are not achievable in practice and are not directly
measurable. Nevertheless, these goals provide useful guide-
posts and direction for water management practices. The
chart in this report includes three types of water quality goals:
i Maximum Contaminant Level Goal (MCLG): The level
of a contaminant in drinking water below which there is no
known or expected risk to health. MCLGs are set by USEPA.
P Maximum Residual Disinfectant Level Goal (MRDLG):
The level of a drinking water disinfectant below which there
is no known or expected risk to health. MRDLGs do not
reflect the benefits of the use of disinfectants to control
microbial contaminants.
it Public Health Goal (PHG): The level of a contaminant in
drinking water below which there is no known or expected
risk to health. PHGs are set by the California Environmental
Protection Agency.
Disease Control and Prevention
1-800-232-4636
www.cdc.gov/fluoridation/
California Department of Public Health
www.cdph.ca.gov/certlic/drinkingwater/
Pages/Fluoridation.aspx
American Water Works Association
www.awwa.org
For more information about Metropolitan's
fluoridation program, please contact Edgar G. Dymally
at (213) 217-5709 or at edymallyCmwdh2o.com.
Radon Advisory
Radon is a radioactive gas that you can't see, taste,
or smell. It is found throughout the U.S. Radon can
move up through the ground and into a home through
cracks and holes in the foundation. Radon can build up
to high levels in all types of homes. Radon can also get
into indoor air when released from tap water from
showering, washing dishes, and other household
activities. Breathing air containing radon can lead to
lung cancer. Drinking water containing radon could
increase the risk of stomach cancer. Compared to radon
entering the home through soil, radon entering the
home through your tap water is a small source of radon
in indoor air. The USEPA Action Level for radon in
indoor air is 4.0 picocuries per liter. Radon from your
tap water contributes no more than 0.1 picocurie per
Alpha Radiation (pCi/L)
15
(0)
<3
5.6
NO -9.3
No
Erosion of Natural Deposits
Beta Radiation (pCi/L)
50
(0)
NR
4.3
NO -6.4
No
Decay of Man-made or Natural Deposits
Combined Radium (pCilq
5
(0)
<i
NO
ND- 1.1
No
Erosion of Natural Deposits
Uranium (pCVq
20
0.43
2
3.3
NO -4.4
No
Erosion of Natural Deposits
Inorganic Chemicals -Tested in 2009
No
Erosion of Natural Deposits
Secondary Standards• - Tested in 2009
0.04
NO -0.80
No
Aluminum (ppm)
1
0.6
NO
0.17
NO -0.23
No
Treatment Process Residue, Natural Deposits -
Arsenic (ppb)
10
0.004
<2
2.3
NO -3.2
No
Erosion of Natural Deposits
Barium (ppm)
1
2
<0.10
0.13
ND -0.14
No
Erosion of Natural Deposits
Fluoride (ppm)
treatment-related'
Control Range 0.7-1.3 ppm
Optimal Level 0.8 ppm
NR
0.8
0.7-0.9
No
Erosion of natural deposits
Fluoride (ppm)
2 1
0.1
NR
NO -0.18
No
Erosion of Natural Deposits
Nitrate (ppm as Nos)
45 45
20
1.7
0.9-30
No
_ Fertilizers, Septic Tanks -
Nitrate+Nitrite(ppmas N)
10 10
4.5
0.4
0.4-6.7
No
Fertilizers, Septic Tanks
Selenium (ppb)
50 (50)
<5
NO
NO -11
No
Erosion of Natural Deposits
Secondary Standards• - Tested in 2009
0.04
NO -0.80
No
Erosion of Natural Deposits
Unregulated Contaminants Requiring Monitoring - Tested in 2009
Aluminum (ppb)
200' 600
ND
170
ND -230
No
Treatment Process Residue, Natural Deposits
Chloride (ppm)
500' n/a
124
97
54-323
No
Erosion of Natural Deposits
Calor (color units)
15' n/a
NO
2
ND -2
No
Erosion of Natural Deposits
Odor (threshold odor number)
3'
n/a
ND
2
ND -2
No
Naturally -occurring Organic Materials
Specific Conductance(pmholcm)
1,600'
n/a
1,082
1,000
639-2,050
No
Erosion of Natural Deposits
Sulfate (ppm)
500`
n/a
148
240
81- 276
No
Erosion of Natural Deposits
Total Dissolved Solids (ppm)
1,000`
n/a
650
610
372- 1,270
No
Erosion of Natural Deposits
Turbidity(riu)
5'
n/a
0.33
0.04
NO -0.80
No
Erosion of Natural Deposits
Unregulated Contaminants Requiring Monitoring - Tested in 2009
Boron (ppb)
Not Regulated
n/a
<100
130
ND -210
n/a
Erosion of Natural Deposits
Calcium (ppm)
Not Regulated
n/a
110
68
39-216
n/a
Erosion of Natural Deposits
Magnesium (ppm)
Not Regulated
n/a
27
27
4.8-65
n/a
Erosion of Natural Deposits
pH (pH units)
Not Regulated
n/a
7.9
7.9
7.3 -8.3
n/a
Acidity, hydrogen ions
Potassium (ppm)
Not Regulated
n/a
2.3
4.8
1.7-5.1
n/a
Erosion of Natural Deposits
Sodium (ppm)
Not Regulated
n/a
82
98
50- 156
n/a
Erosion of Natural Deposits
Total Alkalinity as CaCO3 (ppm)
Not Regulated
n/a
190
120
98-260
n/a
Erosion of Natural Deposits
Total Hardness as CaCO3 (ppm)
Not Regulated
nla
388
280
117-805
nla
Erosion of Natural Deposits
Total Organic Carbon (ppm)
Not Regulated
IT
0.26
2.3
NO - 2.6
n/a
Runoff or leaching from natural deposits
Vanadium (ppb)
Not Regulated
n/a
3.0
3.1
NO - 6.5
n/a
Erosion of Natural Deposits
ppb = parts -per -billion; ppm - parts -per -million; plat = parts -per -trillion; pCill. = picoCunes per liter, ntu = nephelometric turbidity units; pmholcm = micromhos per centimeter;
NR = not required to be analyzed; ND = not detected; <= average is less than the detection limit for reporting purposes; MCL = Maximum Contaminant Level;
(MCLG) = federal MCL Goal; PHG = California Public Health Goal; Wit = not applicable; TT = treatment technique. 'Contaminant is regulated by a secondary standard.
1) Highest single turbidity measurement 0.3 NTU 0.06 No Soil run-off
2) Percentage of samples less than 0.3 NTU 95% 100% No Soil run-off
Turbidity is a measure of the cloudiness of the water, an indication or particulate matter, some of which might include harmful microorganisms.
Low turbidity in Metropolitan's treated water is a good indicator of effective filtration. Filtration is called a "treatment technique' (TT).
A treatment technique is a required process intended to reduce the level of contaminants in drinking water that are difficult and sometimes impossible to measure directly
liter in your indoor air. If you are concerned about
radon in your home, test the air in your home. Fix your
home if the level of radon is 4 picocuries per liter of air
or higher. There are simple ways to fix a radon problem
that aren't too costly.
For additional information, call your State radon
program (1-800-745-7236), the EPA Safe Drinking
Water Hotline (1-800-426-4791), or the National Safety
Council Radon Hotline (1 -800 -SOS -RADON)."
Nitrate Advisory
At times, nitrate in your tap water may have
exceeded one-half the MCL, but it was never greater
than the MCL. The following advisory is issued because
in 2009 we recorded nitrate measurements in the
drinking water supply which exceeded one-half the
nitrate MC L.
"Nitrate in drinking water at levels above 45 milli-
grams per liter is a health risk for infants of less than
six months of age. Such nitrate levels in drinking water
can interfere with the capacity of the infant's blood to
carry oxygen, resulting in a serious illness; symptoms
include shortness of breath and blueness of the skin.
the ability of the blood to carry oxygen in other
individuals, such as pregnant women and those with
certain specific enzyme deficiencies. If you are caring
for an infant, or you are pregnant, you should ask
advice from your health care provider."
About Lead in Tap Water
If present, elevated levels of lead can cause serious
health problems, especially for pregnant women and
young children. Lead in drinking water is primarily
from materials and components associated with service
lines and home plumbing. The City of Tustin Water
Services is responsible for providing high quality
drinking water, but cannot control the variety of
materials used in plumbing components. When your
water has been sitting for several hours, you can
minimize the potential for lead exposure by flushing
your tap for 30 seconds to 2 minutes before using
water for drinking or cooking. If you are concerned
about lead in your water, you may wish to have your
water tested. Information on lead in drinking water,
testing methods, and steps you can take to minimize
exposure is available from the Safe Drinking Water
Nitrate levels above 45 parts -per -million may also affect Hotline or at: www.epa.gov/safewater/lead.
Water conservation doesn't have
to inconvenience our lives to be
effective. Simple changes in how
we do our daily tasks can have a
tremendous impact on our water
usage. A little effort can save a lot
of water.
Want Additional Information? There's a wealth of information on the internet about Drinking Water Quality and
water issues in general. Some good sites — both local and national — to begin your own research are:
City of Tustin: www.tustinca.org • Municipal Water District of Orange County: www.mwdoc.com
Orange County Water District: www.ocwd.com • Water Education Foundation: www.watereducation.org
Metropolitan Water District of Southern California: www.mwdh2o.com
California Department of Public Health, Division of Drinking Water and Environmental Management
www.cdph.ca.gov/certlic/drinkingwater
U.S. Environmental Protection Agency: www.epa.gov/safewater/
California Department of Water Resources: www.water.ca.gov
Water Conservation Tips: www.bewaterwise.com • www.wateruseitwisely.com
Total Trihalomethanes (ppb) 80 21 ND -64 No _ Byproducts of Chlorine Disinfection
Haloacetic Acids (ppb) 60 7 ND— 21 No Byproducts of Chlorine Disinfection
Chlorine Residual (ppm) (4/4) 1.3 ND -2.2 No Disinfectant Added for Treatment
Aesthetic Quality
Turbidity(ntu) 5` 0.18 0.13-0.24 No Erosion of Natural Deposits
Sixteen locations In the distribution system are tested quarterly for total trihalomethanes and haloacetic acids; twenty locations are tested monthly for color, odor and turbidity.
Color and odor were not detected in 2009. MRDL = Maximum Residual Disinfectant Level, MRDLG = Maximum Residual Disinfectant Level Goal;
ntu = nephelometric turbidity units; ND = not detected. 'Contaminant is regulated by a secondary standard to maintain aesthetic qualities (taste, odor, color).
Total Coliform Bacteria 5 % 0 2.0% No Naturally present in the environment
No more than 5% of rhe monthly samples may be positive for total coliform bacteria.
The occurrence of 2 consecutive total coliform positive samples, one of which contains fecal coliform/E coli, constitutes an acute MCL violation.
Lead (ppb) 1s 2 10 2/34 No Corrosion of Household Plumbing
Copper (ppm) 1.3 0.17 0.3 0134 No Corrosion of Household Plumbing
Lead and copper at -the -tap samples were collected from 34 residences In 2009. Lead was detected above the regulatory Action Level in two homes.
Copper was not detected above the Action Level. A regulatory action level is the concentration of a contaminant which, if exceeded in more than 10 percent of the samples,
triggers treatment or other requirements that a water system must follow.
I
iJ p�.LCBGy
Source Water Assessments
Imported (Metropolitan)
Water Assessment
In December 2002, Metropolitan Water District of
Southern California completed its source water
assessment of its Colorado River and State Water
Project supplies. Colorado River supplies are
considered to be most vulnerable to recreation,
urban/storm water runoff, increasing urbanization
in the watershed and wastewater. State Water
Project supplies are considered to be most
vulnerable to urban/storm water runoff, wildlife,
agriculture, recreation and wastewater. A copy of
the assessment can be obtained by contacting
Metropolitan by phone at (213) 217-6850.
Groundwater Assessment
An assessment of the drinking water sources
for the City of Tustin Water Services was
completed in December 2002. The groundwater
sources are considered most vulnerable to the
following activities not associated with detected
contaminants: Confirmed leaking underground
storage tanks, dry cleaners, and gas stations. The
groundwater sources are considered most
vulnerable to the following activities associated
with contaminants detected in the water supply:
Known contaminant plumes, historic agricultural
activities and application of fertilizers, and sewer
collection systems.
A copy of the complete assessment is
available at Department of Public Health Office
of Drinking Water, Santa Ana District, 28 Civic
Center Plaza Room 325, Santa Ana, CA 92701.
You may request a summary of the assessment by
contacting the City of Tustin Water Services at
(714) 573-3382.
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