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Drinking Water Requirements for States and Public Water Systems
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A Revised Total Coliform Rule Guide for Small Public Water Systems

This document aims to assist small water systems serving 1,000 persons with fewer in complying with the requirements of the Revised Total Coliform Rule (RTCR).  It is divided into four parts, Parts A, B, C and D. Each part is designed as a stand-alone document and can be downloaded and used separately.

  • Table of Contents for the RTCR Small PWS Guide (pdf) (October 2015, EPA 815-B-15-002)
  • Download the full document (pdf) (October 2015, EPA 815-B-15-002)
  • Download Part A – The Requirements of the RTCR: An Overview (pdf) (October 2015, EPA 815-B-15-002)
    Part A gives concise information about the requirements of the RTCR and is intended as a quick reference resource.
  • Download Part B – The Requirements of the RTCR: In Detail (pdf) (October 2015, EPA 815-B-15-002)
    Part B presents in more detail the requirements of the RTCR as compared to Part A and intends to provide a deeper understanding of the rule.
  • Download Part C – Compliance Checklist (pdf) (October 2015, EPA 815-B-15-002)
    Part C provides a checklist to help water systems determine their compliance with the rule.
  • Download Part D – Appendices (pdf) (October 2015, EPA 815-B-15-002)
    Part D presents the different routine frequencies available to water systems if the drinking water primacy agency allows reduced monitoring.
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Last updated on December 1, 2021