What’s in Your City Drinking Water? Best and Worst Drinking Water

National Tap Water Quality Database includes water quality tests conducted by 47,667 utilities nationwide from 2004 to 2009. The Environmental Working Group (EWG) obtained the water quality testing data from state health and environmental departments that compile the records from drinking water utilities or associated laboratories. Most state water offices maintain a current record of water utility test data to fulfill their role as primary enforcement agents.

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