The dots on the interactive map mark communities that voluntarily implement progressive or innovative source water protection strategies on a local level. Use the filters below to navigate to more information about these, as well as many other state and provincial source water protection strategies driving progress toward the Source Water Initiative's five key goals. 

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U.S. EPA Research and Monitoring for Unregulated Contaminants in Drinking Water

The U.S. EPA’s Unregulated Contaminant Monitoring Rule (UCMR) requires all public drinking water systems serving at least 10,000 people and a random subset of smaller public systems to periodically monitor for selected contaminants of emerging concern (CECs). Some of these CECs affect source water quality and drinking water treatment needs.