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Drinking Water Requirements for States and Public Water Systems

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.

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