4.1. SR 06-17-2002 - Laserfiche WebLink

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Elk River Municipal Utilities 2001 Annual Drinking Water Quality Report This report is snbmilted in response to federal regulalion Elk River Municipal Utilities is issuing tile results of monitoring done on its drinking water for the period from Jauuary I to December 31,2001. The purpose of this report is to advance consumers' understand- ins of drinking water and heighten awareness of the need to protect precious water resources. Our con- slant goal is to provide you with a safe and depend- ahlc supply of drinking water. This report explains tile efforts we make to continually improve tile water treatment process and protect our water resonrces. We are committed to ensuring the quality of your water. Our mnnicipal water source is grot,ndwater from five (5) wells ranging from 225 to 313 feet deep, that draw fi;om tile Eau Claire-Mt. Simon-tlinckley aquifer. We bare 4 Minnesota licensed water operators who manage/operate the Elk River water system. The Elk Rive,' water system has over 50 miles of water mains, serve over 9,000 populalion and has been m operation for over ?0 years. ERMU is pleased to report that our drinking water is safe and meets federal and state require- inelllS, If you have any questions about this report or con- cerning your water utility, ~Ve want oar valued customers to be informed about their water nldity. If you want to learn more, please atlend any of our regnlarly scheduled meetings. They are held on the second Tuesday of every month tit 4:00 p.m. at the ntility office. Elk River Municipal Utilities routinely monitors for contaminates ill your drinking water accordiug to Federal and State laws. The following table shows the results of our mon- itoring for tile period of January l to December 31, 2001. No contaminants were detected at levels tim, violated federal drinking water staudards. llowever, stone contaminants were detected in trace amouuts tim, were below legal limits. The table that follows shows the contaminants that were detected in trace amounts last yeah Some contaminants are sampled less frequently than once a year; as a result, not all contaminants were sampled for iu 2001. If any of these contaminants were detected the last time they were sampled fi}r, they ,'ire inchnled in the lame. 2 In this table you will find many terms and abbre- viations you might not be familiar with. To help you better understand these terms we've provided tile following definitions: Non-Detects (ND) - laboratory analysis indicates that the constituent was not detected. N/A - Not applicable (does nol apply) Parts per million (ppm) or Milligrams per liter (mg/l) - one part per million con'esponds tn one minnie in two y'ears or a single penny in $10,001). Parts per billion (ppb) or Micrograms per liter tug/l) - one part per billion corresl)onds to one minnie in 2,000 years, or a single penny itl $10,000,000. Parts per trillion (PPO or Nanograms per liter (nanograms/l) - one part l)cr trillion corresponds to one minute in 2,000,000 years, or a siugle penny in $10,000,000,000. Parts per quadrillion (ppq) or Picograms per liter (picogramsll) - one part per quadrillion corre- sponds to one minute in 2,000,000,000,000 years or one penny in $10,000,000,000,000. Action Level (AL) - the coucentration of a con- taminant which, if exceeded, triggers treatment or other requirements which a water system must fol- low. Treatment Technique (?Ti - A lreatment tech- nique is a required process intended to reduce tile level of a contaminant in drinking waler. Maximunt Contaminant Level - (MCL) is the highest level of a coutaminanl that is allowed itl drinking water. MCLs are set as close to the MCI .(is as feasible nsing thc best available u-eatment lech- nology. Maximum Contaminant Level Goal - (MCLG) The level of a contaminant in drinking water below which there is no known or expected risk to heallh MCI~Gs allow for a margin of safely. 90th Percentile Level -This is tile value oblained after disregarding 10 percent of thc salnples taken that had the highest levels. (For example, in a situa- tion in which 10 samples were taken, tile 90th per- cea,lie level is determined by disregm-ding tile high- est result, which represents 10 percent of the sam- ples.) Note: In situations in which only 5 samples are taken, the average of the two with the highest levels is taken to determine the 90th percentile level. 3