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- :P'i". lit' ..',:.,~ .i" . .." ~.,,,- Woter QuolitV Stondards RecO"gnizing~ehealth con cerns of the American people. Congress has adopted string- ent watcr qoolitylaws and given the U S.Environmental Protection Rgency responSibil- ity for proposing new notional stondards further limiting con- taminants in the natian's drink- Ing watCr supplies Even thaJghDenve(s LlJOter more thoomeets these proposed standards. the Department not onlt,i.tests for the eleveninar. gClflic chemicals in the pro. poj;ed EAA standards but fOr 26 other chemicals as well. The Department also testsforvola- tile organic compounds (VOC) such as trichloroethylene (TCE). which has been found in some underground water supplies In the orea. Extensive testing for these compounds has turned up only occasional traces in water furnished to Denver cus- tomers from surface sources. EPA also plans to regulate 26 synthetic organic chemicals such as the pesticide aldecarb. as well as chlordane. lindane and toluene. The Department already tests for a number of these and is awaiting stand- ards for others to be deve- loped by the E.P.A. Quality Control and other department employees attend seminars and training sessions to obtain the latest information on changing water technology and constantly study and test our water supply to ensure safe. dependable wClter s0lVice. How the Denver Water Deportment Compores to Water QuolitV Stondards The Safe Drinking Water Act was passed by Cangressi0 1974. This!aw requires the Environmentol Protection Agency to set itiitiaJlt,i. interim primary drinking water regula- tions which state governments would supervise and enforce if state standards are more stringent than FederalJegu1a- tions The InterirnPrimary Drink- ing Water Regulations \)eCClm0 effective June 24.1977. They established maximum contami. nant levels for various contami- nants in drinking water based ..