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Community Water

The majority of Americans are provided high-quality drinking water. About 90% of people in the United States get their water from a community water system. The U.S. Environmental Protection Agency (EPA) sets regulations for treating and monitoring drinking water delivered by community water systems. Water quality standards and monitoring requirements are in place for more than 90 contaminants.

About 10% of people in the United States rely on smaller water supplies (mostly household wells) that are not regulated by EPA. Treatment and monitoring requirements for these small systems vary from state to state. Drinking water protection programs at the state and national levels play a critical role in ensuring high-quality drinking water and in protecting the public's health.

Preteen boy drinking a glass of waterThe Tracking Network has data and information about the levels of several contaminants that can be found in drinking water. They are listed in the Additional Links box. These contaminants were selected for the Tracking Network because they occur more frequently in drinking water at levels that may be of public health significance.

 

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