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� y , Ci o RRi an Consumer idence Re ort 2003 In order to ensure that tap wateris safe to drink,USEPA and the state Department of Health Services(Department) } prescribe regulations that limit the amount of certain contaminants in water provided by public water, systems, ` Department regulations also establish limits for contaminonts in bottled writer that must provide the same protection i J for public health. Tables 1,2,3,A,and 5 list all of the drinking water contaminants that were detected during the most recent sampling for the constituent. The presence of these contaminants in the water does not necessarily indicate that l the water poses a health risk: The Department requires us to monitor for certain contaminants less than once per year because the concentrations of these contaminants are not expected to vary significantly from year fo year. some of the data,though representative of the water quality,are more than one year old. I TABLE 1 - SAMPLING RESULTS SHOWING THE DETECTION OF COLIFORM BACTERIA ' I Microbiological Contaminants Hightst 'No. of MCL MCLG Typical Source of (to be completed only if there No. of months in f Bacteria k was a detection of bacteria) detections violations Tota!Coliform Bacteria (In a mo.) 0 More than I sample,in a month with a .0 Naturally present in 0 detection the environment p Fecal Coliform or E.coli (In the 0 A routine sample and a repeat sample detect 0 Human and animai year) total coliform and either sample also detects' fecal waste 0 fecal coliform or E.coli TABLE 2 - SAMPLING RESULTS SHOWING THE DETECTION OF LEAD AND COPPER Lead and Copper No, of 901" No, sites AL MCLG (to be completed only if there samples percentile exceeding Typical Source of Contaminant was a detection of lead or collected level AL L.Uo Ler in the last sample set) detected Lead(ppb) 37 0 0 15 2; Internolcorrosion of household water plumbing systems:discharges from industrial 11 manufacturers:.erosion of natural deposits. Copper(ppm) 37 270 0 13 0.17 Internal corrosion of household water plumbing 0 systems;erosion of natural deposits;leaching ' from woad preservatives, I TABLE 3 - SAMPLING RESULTS FOR SODIUM AND HARDNESS Chemical or Constituent Sample Level Ronge of MCL PHG Typical Source of Contaminant (and re orcin units) pate Detected Defections {MCLG) Sodium(ppm) 6/03 88 78-98 none 4 none Generally found in ground and surface water Hardness(ppm) 6/03 170 110•Z30 nonenone Generally found in ground and surface I stater TABLE 4 - DETECTION OF CONTAMINANTS WITH A PRIMARY DRINKING WATER 5TANDARD Chemical or Constituent Sample Level Range of MCLPHG Typical Source of Contaminant (and reporting units) Date Detedted Detections (MCLG) Arsenic 6f03 8 ppb 5-11 ppb 50 ppb N/A Erosion of natural deposits:runoff from a orchards:glass and electronics production € wastes u l ' i