This document provides guidance to states, tribes, and the EPA Regions exercising primary enforcement responsibility under the Safe Drinking Water Act (SDWA). It contains EPA’s current policy recommendations for complying with the RTCR.

For more information, please see the Revised Total Coliform Rule and Total Coliform Rule page.

• Revised Total Coliform Rule (RTCR) Template Factsheets for Outreach to Systems Serving 1,000 or Fewer Persons. RTCR Template Factsheets for Primacy Agencies(13 pp, 2 MB)

• The Revised Total Coliform Rule (RTCR) State Implementation Guidance – Final (PDF)(303 pp, 2 MB, June 2020, EPA 816-R-20-003)
  RTCR doc for primacy agencies