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JUL-29-2014 09 : 10 FROM : FAR WEST LABORATORIE 209-869-2278 TO : 2345864 P . 4/5 <br /> h In order to ensure that tap water is safe to drink the USEPA and the Cal ifomia Department of Public Health <br /> (Department) prescribe regulations that limit the amount of certain contaminants in water provided by public water <br /> systems. Department regulations also establish limits for contaminants in bottled water that must provide the same <br /> protection for public health. <br /> Tables 1, 2, 3, and 4 list all of the drinking water contaminants that were detected during the most recent <br /> sampling for the constituent. The presence of these contaminants in the water does not necessarily indicate that the <br /> water poses a health risk. The Department allows us to monitor for certain contaminants less than once per year <br /> because the concentrations of these contaminants do not change frequently. Some of the data, though representative <br /> of the water quality, are more than one year old. <br /> TABLE 1 - SAMPLING RESULTS SHOWING TIME DETECTION OF COLIFORM BACTERIA <br /> No* of <br /> Microbiological highest Months <br /> Contaminants No, of in MCI. MCLG Typical Source of Bacteria <br /> Detections Violation <br /> More than 1 Naturally present in the <br /> i <br /> Total Colifotrn (in a mo.) More sample in a month 0 environment <br /> Bacteria d` with a detection <br /> IF <br /> Aroutine sample <br /> and a repeat <br /> Fecal Coliform or coli <br /> Ute simple detect laical <br /> year) 0 form and either 0 lluman and animal fecal waste <br /> E. cnli sample also detects <br /> 0 fecal coliform or <br /> >J, Coli <br /> TABLE 2 = SAMPLING RESULTS SHOWING THE DETECTION OF LEAD AND COPPER <br /> IF <br /> No. of NOVSites <br /> Dead and Copper Percentile Typical Source of <br /> Samples Exceeding PHO <br /> (and reporting units) Collected te <br /> D tecd AL Contaminant <br /> IFF- IFFIFFIFFIFFIFFIFF lnteriaal corrosion of household <br /> 5 water plumbing systems; <br /> Lead (ppb) ¢ 5 0 is 0,2 discharges from industrial <br /> (07/03/13) manufacturers; erosion of <br /> _ . . natural deposits. <br /> -tt:mal corrosion of household <br /> 5 water plumbing systems; <br /> Copper (ppm) < 0.05 0 1 .3 0.3 erosion of nature[ deposits; <br /> (07/03/13) leaching from wood <br /> .._... .Preservatives._ _ _FFIFFIFFIFFIFFIFFIFF.,_ <br /> *Anv violation of an MCL or AL is asterisked. Additional information regarding the violation is provided below. <br /> Summary Information for Contaminants .Exceeding AnMCL or AL, or a 'Violation of any <br /> Treatment or Monitoring and Reporting Requirements <br /> In September of 2013, Total Coliform Bacteria was detected in the drinking water distribution system. Coliforms are <br /> bacteria that are naturally present in the environment and are used as an indicator that other, potentially-hamtfuL <br /> bacteria may be present. Coliforms were found in more samples than allowed and this was a warning of potential <br /> problems. In response, the public was notified, and the entire drinking water system was disinfected, flushed, and re- <br /> tested. Follow up testing confirmed that the problem had been resolved. <br /> 8W901 Farm -Revised April ZOW <br />