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Home My WebLink About06 SET A PUBLIC HEARING FOR PUBLIC HEALTH GOALS (PHGs) 2007-2009 REPORT•Agenda AGENDA REPORT Reviewed:l m 6 City Manager Finance Director N/A MEETING DATE: JUNE 15, 2010 TO: WILLIAM A. HUSTON, CITY MANAGER FROM: DOUGLAS S. STACK, DIRECTOR OF PUBLIC WORKS/CITY ENGINEER SUBJECT: SET A PUBLIC HEARING FOR PUBLIC HEALTH GOALS (PHGs) 2007-2009 REPORT SUMMARY The California Health and Safety Code requires that water utility agencies with more than 10,000 service connections prepare a report every three years and conduct a public hearing to provide information to consumers on the levels of contaminants in the City's drinking water. RECOMMENDATION It is recommended the City Council set a public hearing for July 6, 2010 at 7:00 p.m. to receive and respond to public comments on the City of Tustin 2007-2009 Public Health Goal Report. FISCAL IMPACT Sufficient funds are available in the Water Division Operating Budget to complete this report. BACKGROUND California's Health and Safety Code specifies that water utility systems larger than 10,000 service connections prepare a report and conduct a public hearing if the system has contaminants above the public health goals (PHGs) adopted by a California Office of Environmental Health Hazard Assessment (OEHHA) or if contaminants occur above the Maximum Contaminant Level Goals (MCLGs) adopted by the United Sates Environmental Protection Agency (USEPA). The Public Health Goals report, along with an Annual Water Quality Report that is mailed to each customer and available on the City's website, provide consumers with water contaminant information and the cost to totally eliminate contaminants from a system's drinking water regardless of how minimal the risks may be. Both reports are available for public review on the City's website. , Stack, P.E. Vicky Kim Public Works/City Engineer Management Analyst S; \City Council Items\2010 Council Items\Set PH for Public Health Goals 2007-2009 Report.docx CITY OF TUSTIN PUBLIC HEALTH GOALS (PHG) 2007-2009 RE t USTIN iLILL ING OUR ftJI UKr 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 P�0, nor MCLG ha!�yet been adopted by OEHHA or USEPA including Total Trihalomethane these will be addressed in a future required report after a PHG has been adopted. The new law specifies what information is to be If a constituent was detected in the Cit off6si level exceeding an applicable PHG or MCI:G, th the law. Included is the numerical public Malt MCLG, the category or typeB of HAW health th; best treatment technology availablthat could estimate of the cost to install that treatment if INTRODUCTIOW� The City of Tustin provides p9ta and also to unincorporated ares water supply include 30% from imported water system, and 70 groundwater wells that pump d facilities [Main Street Treatmen five additional wells. report. is water supply between 2007 and 2009 at a report providetAhe information required by ride associated with the MCL and the PHG or 3e associated with each constituent, the to reduce the constituent level, and an appropriate and feasible. le water service to most of the incorporated area of the City north of the City's boundaries. The City's existing source of i.e Metropolitan Water District of Southern California (MET's) from a combination of eight untreated [or clean] local ktly into the City's water system, and two water treatment Plant and 17th Street Desalter] that treat groundwater from At two of the well sites supplying water directly into the City's water system, water is blended with other well water or imported water to reduce nitrate concentrations below the State's MCL for this constituent. More specifically, the Prospect Well is blended with MET water and Beneta Well is blended with water from the Columbus -Tustin Well. 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 2007, 2008, and 2009 Annual Water Quality Reports which were mailed to all of our customers. (See Attachment) GUIDELINES FOLLOWED The Association of California W guidelines for water utilitie< guidelines were used in the regulatory agencies. BEST AVAILABLE ater Agencies (ACWA) formed a workgroup which prepared use in preparing these newly required reports. The ACWA paration of our report. No guidance was available from state NOLOGY 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 pito curies/liter from 2007-2009. Arsenic is naturally occurring element found throughout the earth's crush`:` 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 maWezperience 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 irt-10,000) and,'bc106 (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 irierease treatment costs by approximately $160-210 per AF of treats(fwateo,". Uranium The PHG for uranium is 0.41 pico c Tustin detected Iowlevels ofurani averaging ess than 2.0,pico curie surface water from Metropolitan 3.7 pico curi4gliter from 2007t curies/liter. Thlevels were bE The health risk associated with uranium in excess of they MCL c and the California MCL is 20 pito curies/liter. roundwater wells as high as 4.4 pico curies/liter, rom 2007-.2009. Tustin also purchases some treated District (MWD). This source had detections as high as ,average over the same period was 3.3 pico the MCt at all times. No action is required. 'anium is that some people who drink water which contains T 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 re -check 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 MCLGs:"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 hz connection control program, maintenance of effective monitoring and surveillance progran distribution system. Our system has already 1 available technology" for coliform bacteria in There is no MCL for Lead or Copp( household taps in the distribution and 1.3 mg/l for copper. The PHG The category of health risk for leap category of health risk for copper' lead and copper have not yet beef providing that information. ;tem can lead is ( e implemented include: an effective cross - disinfectant residual throughout our system, an and maintaining positive pressures in our ken all of the steps described by CDPH as "best ection 64447, Title 22, CCR. e 90th; percentile value of all samples from of exceed an Action Level of 0.015 mg/I for lead 002 mg/l. The PHG for copper is 0.17 mg/I. is damage to the kidneys or nervous system of humans. The gastrointestinal irritation. Numerical health risk data on provided by OEHHA, the State agency responsible for All of our source water samples for lead and copper in 2007-2009 were less than the PHG. Based on extensive sampling of our distribution system in 2007-2009, our 90th percentile value for lead was greater than 7.0 mg/I and for copper was greater than 0.3 mg/I. 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 sign ificagreductions 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 1 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 0.000004d 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 rev2009 1,2-Dibromo-3-chloropropane (DBCP) 0.0002 0.00001 1.7E-06 1999 2,4-Dichlorophenoxyacebc acid (2,4-D) 0.07`° 0.01 0.02' 200W Di 2-eth Ihex I adi ate 0.4 0.005 0.2 2003 Di 2-eth the 1 phthalate DEHP 0.004 0.003 0.012 1997 Dinoseb 0.007 0.002 0.014 1997 Di uat 0.02 0.004 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 Glyphosat& 0.7 0.025 0.9 2007 Heptachlor 0.00001 0.00001 0.000008 1999 He tachlor epoxide 0.00001 0.00001 0.0000061 1999 Hexachlorobenzene 0.001 0.0005 0.00003-1 2003 Hexachloroc clo ntadiene 0.05 0.001 0.05 1 1999 Lindane 0.0002 0.0002 0.000032 1999 rev2005 Methoxychlor 0.03 0.01 0.03 1999 Molinat& 0.02 0.002- 0.001 2008`. Oxam l 0.05 0.02 0.026 2009> Pentachlorophenol (PCPJ 0.001 0.0002 1 0.0003 2009•• Picloram 0.5 0.001 1 0.5 1997 Polychlorinated biphenyls PCBs . 0.0006 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 0 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 Byproducts Total Trihalomethanes 0.08 - Bromodichloromethane - 0.0005 zero Bromoform - 0.0005 zero Chloroform - 0.0005 0.07 Dibromochioromethane -- 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 0.501 _ MCLs, DLRs and PHGs for Regulated Drinking Water Contaminants Last Update: Decemhor 31 2nna State DLR PHG or Date of MCL MCLG PHG Gross beta particle activity - OEHHA concluded in 2003 that a PHG was not 4 mrem/yr 4 (zero) n/a practical Radium -226 -- 1 0.05 2006 Radium -228 – 1 0.019 2006 Radium -226 + Radium -228 (addressed together as one MCL) 5 -- -- – Strontium -90 I 8 2 0.35 2006 Tritium20,000 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 9 d -Mi hi,,.,,k------ rev2009 MCLs, DLRs and PHGs for Regulated Drinking Water Contaminants Last Update- nq:%[_RQmilor'II inns 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 010-9 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 DLR PHG or Date of Bromate MCL MCLG PHG Chlorite< 0.010 0.005 0.0001`2009 1 0.02 0.05 2009` Microbiolo ical Contaminants TT = Treatment Techni ue Coliform % positive samples % 5 Cryptosporidium*' (zero) Giardia Lamblia TT zero Legionella TT zero ,Viruses TT zero T.I. 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 010-9 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 2 MAIN STREET TREATMENT PLANT MONTHLY SUMMARY OF NITRATE ANALYSIS (mg/L) 17' 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' 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.3 COST ESTIMATES FOR TREATMENT TECHNOLOGIES (INCLUDES ANNUALIZED CAPITAL AND O&M COSTS) No. Treatment Estimated 2007* Source of Information Technology Unit Cost ($/1,000 gallons 1 Granular Reference: Malcolm Pimie estimate for California Urban Water Agencies, large surta facD/D treated Activated Carbon water treatment plants treating water from the State Water Project to meet Stage 2 and bromate regulation, 1998 0.46 - 0.8784 2 Granular Reference: Carollo Engineers, estimate for VOC treatment (PCE), 95% removal of PC Activated Carbon Oct. 1994,1900 gpm design , capacity 0,21 3 Granular Reference: Carollo Engineers, est. for a large No. Calif. surf. water treatment plant ( 90 Activated Carbon mgd capacity) treating water from the State Water Project, to reduce THM precursors, ENR 1.017 construction cost index = 6262 (San Francisco area) -1992 4 Granular Reference: CH2M Hill study on San Gabriel Basin, for 135 mgd central treatment facili Activated Carbon for VOC and SOC removal by GAC, 1990 0.394 - 0.5783 5 Granular Reference: Southern California Water Co. - actual data for "rented' GAC to remove Activated Carbon VOCs (1,1-13CE), 1.5 mgd capacity facility, 1998 1.823 6 Granular Reference: Southern California Water Co. - actual data for Permanent GAC to remove Activated Carbon VOCs TCE 2.16 ( ) , mgd plant ca aci 1998 m capacity, 1.178 7 Reference: Malcolm Plmie estimate for California Urban Water Agencies, large surface Reverse Osmosis water treatment plants treating water from the State Water Project to meet S and bromate regulation, 1998 loge 2 D/D m 1.367 -2.616 8 Reference: Boyle Engineering, RO cost to reduce 1000 ppm TDS in brackish Reverse Osmosis groundwater in So. Calif., 1.0 mgd plant operated at 40% of design flow, high brine line cost, May 1991 3.224 9 Reference: Boyle Engineering, RO cost to reduce 1000 ppm TDS in brackish Reverse Osmosis groundwater in So. Calif., 1.0 mgd plant operated at 100% of design flow, high brine lin cost, May 1991 1,98 } 10 Reference: Boyle Engineering, RO cost to reduce 1000 ppm TDS in brackish Reverse Osmosis groundwater in So. Calif., 10.0 mgd plant operated at 40% of design flow, high brine lin cost, May 1991 2.15 11 Reference: Boyle Engineering, RO cost to reduce 1000 ppm TDS in brackish Reverse Osmosis groundwater in So. Calif., 10.0 mgd plant operated at 100% of design flow, high brine Iii a cost, May 1991 1.66 12 Reverse Osmosis Reference: Arsenic Removal Study, City of Scottsdale, AZ - CH2M Hill, for a 1.0 mgd plant operated at 40% of design capacity, Oct. 1991 5.394 13 Reverse Osmosis Reference: Arsenic Removal Study, City of Scottsdale, AZ - C112M HillEfor plant operated at 100% of design capacity, Oct. 1991 14 EOMgd Reverse Osmosis Reference: Arsenic Removal Study, City of Scottsdale, AZ - CH2M Hill, E2.39 plant operated at 40% of design capacity, Oct. 1991 Reverse Osmosis Reference' Arsenic Removal Study, City of Scottsdale, AZ - CH2M Hill, fora 10.0 mgd 416Reverse plant operated at 100% of design capacity, Oct. 1991 1.48 Osmosis Reference: CH2M Hill study on San Gabriel Basin, for 135 mgd central treatment facili with RO to remove nitrate, 1990 1.485 - 2.616 17 Packed Tower Reference: Analysis of Costs for Radon Removal... (AWWARF publication), Aeration Kennedy/Jenks, for a 1.4 mgd facility operating at 40% of design capacity, Oct. 1991 0.86 18 Packed Tower Reference: Analysis of Costs for Radon Removal... (AWWARF publication), Aeration Kennedy/Jenks, for a 14.0 mgd facility operating at 40% of design capacity, Oct. 1991 0•46 19 Packed Tower Reference: Carollo Engineers, estimate for VOC treatment (PCE) by packed tower aeration, without off -gas treatment, O&M costs based on operation Aeration at 10% downtime, 16 hr/day air stripping operation, 1900 during 329 d 0.22 gpm design capacity, Oct.t. 1 19 Page 1 of 2 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 This report contains important information about your drinking water. Translate it, or speak with someone who understands it. cA.,,i..Lu a.., Arabfc Der Bericht entifih wk�htige lnfom)otd er a ober dle wasser- =I=ItIt h threr iJrt>0etxxig. Der tIt erttweder offhlell uebwsetzt werden, oder sprechen Sle rnit rreunden - ,:oder Bakamten, dle gate German Chinese :IM 'ft+" 4 1" 4, mii- zfr tarrc at Or vice C M id�vft attnm A -att -0' gfiit i Hindi of _q'kio11= •7i 81%I7I�113I= Este WOM)econtler»hforma- XI°'OI�IrPa�1 cibnmNirnportantesobresu 7f -5 0 1 5.' m i -I G. o 07 CD < ro WiL-t lfrI maci6n6troducd5n,favorde fo4Ola�d'�IQ. contoctoraNt.ANalenzt.relo. Telefono: (714) 573-3382. Korean spanlsh 0- 4 5 O o w n o �J O rNi tzso t o oN �� w E;, &; ro ro c L. LJ' tr .%. ro ro r ti w C) = ro a O ib C =r b N n M C S. N "n to � ro co o h H tv a This report contains important information about your drinking water. Translate it, or speak with someone who understands it. cA.,,i..Lu a.., Arabfc Der Bericht entifih wk�htige lnfom)otd er a ober dle wasser- =I=ItIt h threr iJrt>0etxxig. Der tIt erttweder offhlell uebwsetzt werden, oder sprechen Sle rnit rreunden - ,:oder Bakamten, dle gate German Chinese :IM 'ft+" 4 1" 4, mii- zfr tarrc at Or vice C M id�vft attnm A -att -0' gfiit i Hindi of _q'kio11= •7i 81%I7I�113I= Este WOM)econtler»hforma- XI°'OI�IrPa�1 cibnmNirnportantesobresu 7f -5 0 1 5.' m i -I G. o 07 Ogua potable. Para mas Infor- WiL-t lfrI maci6n6troducd5n,favorde fo4Ola�d'�IQ. contoctoraNt.ANalenzt.relo. Telefono: (714) 573-3382. Korean spanlsh Ce rapport content des inform itions I nportantes sw votre eau potable. TmdulseNe ou parlez en avec quelqu'ui crJ le comprend blen. French �� t �TO��t>l>a��1JtIGfi�t ;`rnr, ar��T�t• fi16t�r=�17T<f'�t�. Japanese Ban bio cio cd ghi nhRN chi bAt quan tang 4pham chAt rude trong cOng dung quy vi. 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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 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. 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In December There are many places to go for additional informa- 2007, the Metropolitan Water District of Southern tion about the fluoridation of drinking water. California joined a majority of the nation's public water City of'lbstin: www.tustinca.org • Municipal Water District of Orange County: www.mwdoc.com suppliers in adding fluoride to drinking water in order U.S. Centers for Disease Control and Prevention to prevent tooth decay. In line with recommendations 1-800-232-4636 from the CDPH, as well as the U.S. Centers for Disease www.cdc.gov/Orathealth/publications/factsheets/ Control and Prevention, Metropolitan adjusted the_., 3 American Dental Association ' natural fluoride level in imported treated water from wwwada.org/public/topics/fluoride/index.asp the Colorado River and State Project water to the California Department of Water Resources: www.water.ca.gov optimal range for dental health of 0.7 to 1.3 parts per American Water Works Association million. Our local water is not supplemented with * www.awwa.org awwa.org fluoride. Fluoride levels in drinking water are limited ,, For more information about Metropolitan's under California state regulations at a maximum dosage fluoridation program, please contact Edgar G. Dymally of 2 parts per million. at (213) 217-5709 or at edymaUy@mwdh2o.com. dymally@mwdh2o.com. 4 Want Additional If1fOTIAatIOA? There's a wealth of information on the Internet about Drinking Water Not neguiateci .. Quality and water issues in general. Some good sites — both local and national — to begin your own research are: ND — 21 City of'lbstin: www.tustinca.org • Municipal Water District of Orange County: www.mwdoc.com Byproduct of Drink Water ptsinfeubn Orange County Water District: www.ocwd.com • Water Education Foundation: www.watereducation.org Not Regulated Metropolitan Water District of Southern California: www.mwdh2o.com _ Water cortser✓a&ort abestt't f have to inown"rknce California Department of Public Health, Division of Drinking Water and Environmental Management 04 our Itm to be effiecdW_- www.cdph.ca.gov/certfic/dtnkingwater �y Sin+ple changes bi hots U.S. Environmental Protection Agency www.epa.gov/safewater/ the do our daft}+talsks ran California Department of Water Resources: www.water.ca.gov ,�4 hvea dousr Na impact on our water Water ConservationTTps: www.bewaterwise.com • wwwwateniseitwiselycom ' usage Alttdeeffort can n/a saw a lot of water ngnm ndunr WLWLJ I7 (u) ___5.6 3.8-9.3. No Erosion of Natural Deooslt5 Aluminum(ppm) 1 0.6 0.16 0.08-0.28 No Treatment Process Fluoride (ppm) treatment-related Control Range 0.7 —1.3 ppm 0.8 0.6 — 0.9 No Water Additive for Dental Heath Optimal Level 0.8 PPM Nitrate as Not (ppm) 45 45 2.2 ND — 2.6 Na Aarkuhtae Rin -0 aM Cnucure MlRdluuly, duan ds �d U]l tppar) Not neguiatea rva 110 100-121 n/a Runoff or Leaching from Natural Deposits Baron (ppb) Not Regula ted Na 140 130-150 n/a Runoff or LeachiN from Natural Deposits Cakkan (ppm) Not Regulated n/a 61 55-72 n/a Runoff or Leaching from Natural Deposits Hardness, total as CaCot (ppm) Not Regulated n/a 257 226-300 Na Runoff or Leaching from Natural Deposits Hardness, total (gralnslgal) Not Regulated n/a 15 13-18 n/a Runoff or Leaching from Natural Deposits Magnesium (PPm) Not Regulated n/a 25 22-29 n/a Runnif M 1 aarhim fm N e-1 r> v .ruosaaimemryamine Nurw tPpp Not neguiateci Na 11 ND — 21 Na Byproduct of Drink Water ptsinfeubn pH (pH units) Not Regulated n/a 8,1 8.0-8.2 n/a Hydrogen Ion Concentration Potassium (ppm) Not Regulated n/a 4.5 4.1-4.9 Na Runoff or Leachi from Natural Deposits Sodium (ppm) Not Regulated n/a 94 85-106 n/a Runoff or Leachi from Natural Deposits Total Organic Carbon (ppm) Not Regulated TT 2.3 1.9-2,5 n/a Various Natural and roan ma o cn vanaowm tppo) Not Regulated Na 3.8 3.5-4.0 Na Runoff or Leaching from Natural Deposits ppb. parts-per-bi6m; Pyre- pamper-mtlAon; ppt - parts-per-mEion; PCVL - picoCwtes pef liter, me - noebmetrk turbidity MAN fn*xdcm = miamdas peronnia P ter; NO - not detected; < = average a less than the de*Cwta limit for rtewWr3 pwpos off= Madmum Contaminant tael;1M4G1=federal MCL Gaal; PIIG -California PNrYc Fkaltlt Goal; Na -not apphcahN: 17 = treatment tedinique 'ContaminarrtK regulated by a standard r o ,�mw�= U �a �wm� u nR wma an mmcaaon or partrcurare manor, same its "'Im include hanmhl microorganisms. Low turbidity m MetropoYtan's treated water fs a good hrdicator of eflealve Madan. Filtration k called a 'treamwn technique' cm. A treatment technique is a required pores Intended to reduce the level of contaminants in drin*4 water that are difficult and sometimes impossble to measwe din city. 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 Protect 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. f— 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 92 70 1. You may request a summary of the assessment by contacting the City of lustin Water Services at (714) 573-3382. 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 ry 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. F� r C •! 7 • t t/f P � � G p, FD i � � •� "O N `d E •o v co -, a E v w v � o0 .y co� v a •v NC, go � m o x "O � E p, �7 M. v S °N' c v f ., EiAd v@12bo y a yn 'E 5 3 'S- �3 A0. v. � V cVJ .V.. � yya A .� ❑ V � i EO u 7 T fl ' ro- v G H 9 o L b a o o c �S c r v $EJ :E .i. O .r -a W' 1.. & N O O d 3 4%i. Ja y � •i O c O a •y o w, j - y f.J (!J 01 N 0! yam' '°gyp. �. tti Q Y Ald � A y Ol ,� "�.. � b0. O/ X00! o � .� � v � v �3 [ � � 3 � a � � '-"oma, .., ai a •� �° � j � o a a � C � � � a � ai o� o � •� � v a "' 3 r `� � 3 � r v '� 8 �- a o. -'OU U o o m� N O N y y 1�• y 'O a .L a $ 4 Q p � � o� � '� •� `�° °' q � � � � � o ;� °' � E �b •yv w " 3 ami �o �; i � � .s 5� ��P M U a� ❑ .o 0 0� V - N " y ?. �f ami o a� c, ti E ai o o v v o� v 3 o H .�. e a a�aoau'�a`O,a9yu�vc H o M o Rr Ca v o > t'i v �� •3 0 P-4 S s �cu The Quality of Your Water is Our Primary Concern Drinking Water Fluoridation 3 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 fine 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: I Maximum Contaminant Level (MCL): The highest level. of a contaminant that Is allowed in dunking water. Primary MCLS are set as close to the PHGs (or MCLCs) as is economically and technologically feasible. Maximum Residual Disinfectant Levet (MRDL): The highest level of a disinfectant allowed in drinking water. There is convincing evidencethat addition of a disinfectant is necessary for control of microbial contaminants. Secondary MCIs are set to protect the odor, taste, and - appearance of drinking water. 1 Primary Drinking Water Standard: MCLS for contami- nants that affect health along with their monitoring and reporting requirements and water treatment regtdremenm t 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 titer (mg/If i parts per billion (ppb) or micrograms per liter f1+PIl). I parts per trillion IPpt) or nanograms per liter IngA) 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 0 Maximum Contaminant Level Goal (MCLG)c The level of a contaminant in drinking water below which there is no " known or expected risk to health. MCLGs are set by USEPA. r 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. P 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, 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/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 edymally@mwdh2o.corr 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 (pCUL) 15 (0) _ <3 5.6 ND -93 No Erosion of Natural Deposits Beta Radiation (pCUL) 50 (0) NR _ 4.3 NO - 6.4 No Decay of Man-made or Natural Deposits Combined Radium (pCVI) 5 (0) <1 NO _ ND -1.1 No Erosion of Natural Deposits Uranium (pCi 20 0.43 2 3.3 ND -4.4 No Erosion of Natural Deposits Inorgank Chemicak-Tested in 2009 (50) <5 NO ND -11 No Erosion of Natural Deposits Aluminum (ppm) 1 0.6 ND 0.17 ND -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 OS 0.7 -0.9 No Erosion of natural deposits Fluoride (ppm) 2 1 0.1 NR ND -0.18 No Erosion of Natural Deposits Nitrate (ppm as N0s) _ 45 45 20 1.7 69-30 No Fert liters, Septic Tanks Nitrate+Nitrite (ppm as N) 10 10 4.5 0.4 0.4-6.7 No Fertilizers, Septic Tanks Selenium (ppb) 50 (50) <5 NO ND -11 No Erosion of Natural Deposits secondary Standardst- Tested in 2008 Aluminum (ppb) 200' 600 NO 170 NO -230 No Treatment Process Residue Natural Deposits Chlore (ppm) 500' n/a 124 97 54-323 No Erosion of Natural Deposits Calor (color units) 15` Na ND 2 ND -2 No Erosion of Natural Deposits Odor (threshold odor number) 3` n/a ND 2 ND -2 No Naturally -occurring Organic Matcmah Specific Conductance(pmho/cm) 1,600` _ n/a _ 1,082 1,000 639-2050 No Erosion of Natural Deposits Sulfate (ppm) 500` n/a_ _n/a 148 240 81- 276 No Erosion of Natural Deposits af Total Dissolved Solids (ppm) 000' 650 610 312 -1 270 No Erosion of Natural Deposits Turbidity(ntu) S. Iva 0.33 0.04 ND -0.80 No Erosion of Natural Deposits Unregullated Contaminants Requiring Monitoring -Tested in 2009 Boron (ppb) Not Regulated n/a <100 130 ND -210 Erosion of Natural Deposits Caldum (ppm) Not Regulated n1a 110 68 39-216 ___n/a_ nla 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 n/a 388 280 117-805 nia Erosion of Natural Deposits Total Organic Carbon (ppm) Not Regulated TT 0.26 2.3 NO - 2.6 Na Runoff or leaching from natural deposits Vanadium (ppb)_ Not Regulated n/a 3.0 3.1 NO -6.5 ma Erosion of Natural Deposits ppb = para -per -bullion; ppm = parts -per -million; ppt = pans -per -trillion; pCbl = picoCooes per liter; Our = nephelometric turbidity units; pmholun = mia-hos per centimeter; NR = not required to be analyzed; ND = not detected; <= average is less than the detection limit for reporting purposes; MCI= Maximum Contaminant Level; (MCLG) = federal MCL Goal; P14G = California Public Health Goal; n/a = not applicable; TT = treatment tedmique. '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 6 a measure of the cloudiness of the water, an indication of particulate matter some of which might include harmful microorganisms. Lm turbidity in Metropolitan's treated water is a good indicator of effective filtration. Filtration is caged a *treatment technique' (TO. A treatment technique is a required process otended to reduce the level of contaminants in drinking water that are ddficult 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 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 At times, nitrate in your tap water may have - lines and home plumbing. The City of Thstin Water exceeded one-half the MCL, but it was never greater Services is responsible for providing high quality than the MCL. The following advisory is issued because 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 Hotline or at: www.epa.gov/safewater/lead. in 2009 we recorded nitrate measurements in the drinking water supply which exceeded one-half the nitrate MCL. "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. Nitrate levels above 45 parts -per -million may also affect Wafer conserwtion do m t have to 6iconwntence our toes to be eJfWWw_ Simple'charigm to how we do our daffy tasks can hate a bemendous Impact on our water usage. A tilde effort can ,says a tot of water. Want Additional Information? There's a wealth of information on the intemet about Drinking Water Quality and water issues in general. Some good sites — both local and national — to begin your own research are: , Soutre Welter ASsftments City of Tilstin: www.tustinca.org • Municipal Water District of Orange County: www.mwdoc.com Imported (Metropolitan) Orange County Water District: www.ocwd.com • Water Education Foundation wwwwatereducatiomotg Water Assessment Metropolitan Water District of Southern California: www.mwdh2o.com I J _4California Department of Public Health, Division of Drinking Water and Environmental Management www.cdph.ca.gov/certUc/ddnkingwater U.S. Environmental Protection Agency: www.epa.gov/safewater/ California Department of Water Resources: www.water.ca gov Water Conservation Tips: www.bewatervfise.com • www.wateruseitwiselycom 11 NU_ HaloacetcAcids (ppb} 60 7 ND— 21 No ByprNo Rmododocts of Cts of ChNaine Disinfec ion ChlorineDisuteRan Chlorine Residual (ppm) (4/4) 1.3 ND— 2.2 No Disinfectant Added for Treatment A z Turb diry (ntW 5' 0.1R 0.13 — 0.24 No Erosion of Natural Deposits _ slKtem lacatlars M the dktrlbutbn system are tested quarterly fa total trhalomethanes and haloacetic acids; twenty bcacbm are tested monthly for color, oda and tabdky, Color and oda were rat detmed in 2009. INNDI : Maafrram Resirnral Dainfectant level; MIIDLG a Maramurn Residual OisYif eaant Level Goal; ' Mu =nephelometric turbidity urdts; ND =not detected. •Comamnynt n regrdated by a secondary standard ro nwintaYi aesthetic qualities (taste; odor Cola). Total Colffarm Bacteria 5% 0 2.0% No Naturally present in the eNnormmt No more than 5% of the mWitly samples may be p% ve for total catomn bacteria. The occurrence of 1 consecurive total coliform positive samples, one of which contains fecal colHam/E mf, constkutes an acute MCt vwmhm "' c t JAI No Corrosion of Naachdd 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 hones, Copper was not detected above the Action Level. A regulatory action level is the mncemration of a contaminant which, it exceeded in more than 10 pefcmt of the samples, triggers treatment or other requirements that a water system must follow. in December 2002, Metropolitan Water District of y Southern California completed its source water assessment of its Colorado River and State Water Project supplies. Colorado River supplies are considered to he 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 t 1-117 An assessment of the drinking water sources — for the CIty of Tustin Water Services was " h completed in December 2002. The groundwater "�-A 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. Q A V d a. 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