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 This website is no longer updated and links to external websites and some internal pages may not work.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 Requirements for States and Public Water Systems

Chemical Contaminant Rules Compliance for Community Water System Owners and Operators

The following documents contain information that the regulated community can use to aid their compliance efforts.

On this page:

Standardized Monitoring Framework (SMF): A Quick Reference Guide

The SMF outlined on these pages summarizes existing PWS’ ongoing federal monitoring requirements only.

Top of Page

Nitrate Monitoring Requirements for Community and Non-community Water Systems

The following is a poster that can go on the wall in your PWS. It will let PWSs know who to contact and what to do based on their nitrate sampling results.

Top of Page

Removing Multiple Contaminants from Drinking Water: Issues to Consider

PWSs adding treatment for one contaminant may find other water quality concerns. A treatment technology that removes several co-occurring contaminants may be more efficient and cost effective. This document:

Top of Page

Small System Compliance Technology List for the Non-Microbial Contaminants Regulated Before 1996

This guidance manual provides detail on the list of compliance technologies for the nonmicrobial contaminants regulated before 1996.

Top of Page

Talking to your Customers about Chronic Contaminants in Drinking Water

This fact sheet helps you understand the importance of communicating with the public about chronic contaminants. It also describes effective strategies for getting your message out.

Top of Page

Point-of-Use/Point-of-Entry Treatment Devices

This document provides guidance on implementing a successful point-of-use or point-of-entry treatment strategy.

Top of Page

For more information, please see the Chemical Contaminants Rules Page.