Your drinking water: EWG Tap Water Database
Enter your ZIP code to see contaminants found in your local water utility’s testing. This tool is run by the Environmental Working Group, a nonprofit, not the government. EWG uses its own health guidelines, which are stricter than federal legal limits. If your water “exceeds EWG guidelines,” that does not necessarily mean it breaks federal law or is unsafe to drink. This tool covers public water systems only. If you use a private well, ask us about well testing.
Dr. Sam Madeira, NMD