An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Drinking Water Regulations Under Development or Review

The EPA is developing or reviewing regulations for certain drinking water contaminants. The public has many opportunities for involvement in EPA's rulemaking process.  These range from stakeholder and early involvement meetings to review and commenting on formal rule proposals in the Federal Register.

EPA rulemaking also involves consultations with small businesses, tribal governments, and official committees established under the Federal Advisory Committee Act (FACA). EPA publishes information about public meetings on proposed regulations and draft regulatory support documents that are open for comment in the Federal Register.

The following regulations are under development:

The contaminant regulation(s) listed below are being reviewed. They may or may not be considered for revision in the future, depending on the outcome of the review.

Related Actions