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• Pesticides and herbicides, that may come from a variety of sources such as agriculture,urban stormwater runofly and residential <br /> uses. <br /> • Organic chemical contaminants, including synthetic and volatile organic chemicals, that are by-products of industrial and <br /> petroleum production.and can also come from gas stations,urban stormwater runoff,agricultural application,and septic systems. <br /> • Radioactive contaminants,that can be naturally-occurring or be the result of oil and gas production and mining activities. <br /> In order to ensure that tap water is safe to drink,the USEPA and the State Water Resources Control Board(State Board)prescribe <br /> regulations that Imut the amount of certain contaminants in water provided by public water systems. State Board regulations also <br /> establish limits for contaminants in bottled water that provide the same protection for public health. <br /> Tables 1, 2, and 3 list all of the drinking water contaminants that were detected during the most recent sampling for the <br /> constituent. The presence of these contaminants in the water does not necessarily indicate that the water poses a health risk The <br /> State Board allows us to monitor for certain contaminants less than once per year because the concentrations of these contaminants do <br /> not change frequently. Some of the data,though representative of the water quality,are more than one year old. <br /> TABLE 1 —SAMPLING RESULTS SHOWING THE DETECTION OF COLIFORM BACTERIA <br /> Microbiological Highest No.of Months <br /> Contaminants No.of in Violation MCL MCLG Typical Source of Bacteria <br /> Detections <br /> Total Coliform Bacteria (In a mo.) 0 1 positive monthly 0 !Naturally present in the <br /> !(State Total Coliform Rule); 0 sample j lenvironment <br /> 1 <br /> IFecal Coliform or E. coli In the year); 0 14 routine sample and a; 0 ;Human and animal fecal waste <br /> !(State Total Coliform Rule)) 0 t sample are total <br /> i Zrm.positive.and <br /> fine of these is also fecal <br /> { Folifortn or E. coli <br /> ! posmve <br /> I E. coliKIDthe year)' 0 (a) 0 !Human and animal fecal waste <br /> (Federal Revised Total 0 <br /> IColiform Rule) <br /> i <br /> I <br /> !(a)Routine and repeat samples are total coliform-positive and either is E. coli-positive or system fails to take repeat samples following:, <br /> ;E. coli-positive routine sample or system fails to anal}-z�total coliform-positive repeat sample for E. coli. <br /> TABLE 2—SAMPLING RESULTS SHOWING THE DETECTION OF LEAD AND COPPER ! <br /> Lead and Copper I Sample No.of Pere No.Sites <br /> (and reporting units) Datei� evel <br /> Detected <br /> � !Ezceeding AL PHG Typical Source of Contaminant <br /> ted <br /> AL <br /> Lead(ppb) 07/05118 j 5 < 5 0 15 0.2 1Internal corrosion of household <br /> Iwater plumbing systems; i <br /> I idischarges from industrial r <br /> Manufacturers;erosion of natural <br /> ideposits <br /> Copper(ppm) 07/05.18 5 0.3 0 1.3 0.3 Internal corrosion of household l <br /> 1piumbing ;erosion of <br /> inatural deposits; leaching from <br /> wood preservatives <br /> *Am-violation of an MCL or AL is asterisked. Additional information regarding the violation is provided later in this report. <br /> 2018 SR'S CCR Form Revised Feb 2019 <br />