Protecting drinking water sources. EPA emphasizes protecting sources of drinking water from contamination. It is more desirable, effective and economical to prevent contamination of drinking water supplies than to pay for treatment, or to clean up an already-polluted source. States are currently assessing all the drinking water sources within their boundaries. These assessments map the rivers, lakes and ground water wells that supply public drinking water and identify principal threats to water quality.
States can also utilize millions of federal dollars to take actions to protect source waters.
Once informed about the sources and quality of your local drinking water , you can make the best possible choices about the water you and your children drink. Information for Private Well Owners Private water supplies are not regulated by EPA, although some states and municipalities have standards that apply to these wells. If you have a private well, you are responsible for testing your water to make sure it is safe. This is especially important in areas where homes and nearby businesses are on septic systems. Since many contaminants are colorless and odorless, testing is the only way to determine whether your well water is safe to drink.