Overview of the Rule
Title* Revised Total Coliform Rule (RTCR)
78 FR 10269, February 13, 2013, Vol. 78, No. 30
Purpose Increase public health protection through the reduction of potential pathways of entry for fecal
contamination into distribution systems.

General
Description
The RTCR establishes a maximum contaminant level (MCL) for E. coli and uses E. coli
and total coliforms to initiate a “find and fix” approach to address fecal contamination that
could enter into the distribution system. It requires public water systems (PWSs) to perform
assessments to identify sanitary defects and subsequently take action to correct them.

Utilities
Covered The RTCR applies to all PWSs.
*
This document provides a summary of federal drinking water requirements; to ensure full compliance, please
consult the federal regulations at 40 CFR 141 and any approved state requirements.

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Table of Contents
Chapter Page No.
1. A Consumer’s Guide To The Nation’s Drinking Water …1
2. How Safe Is My Drinking Water? …2
3. Where Does My Drinking Water Come From And How Is It Treated?  …7
4. How Do We Use Drinking Water In Our Homes? …10
5. What’s Being Done To Improve Water Security? …13
6. What Can I Do If There Is A Problem With My Drinking Water? …15
7. How Safe Is The Drinking Water In My Household Well?  …18
8. What You Can Do To Protect Your Drinking Water …21
Appendix A: National Primary Drinking Water Standards as of 10/03 …23
Appendix B: References  .28
Appendix C: Sources of Additional Information  …29
Appendix D: Glossary …31

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