Total Coliform Rule (TCR) Federal Register Notice
This document provides the FR notice to 40 CFR Parts 141 and 142 Drinking Water: National Primary Drinking Water Regulations; Total Coliforms (Including Fecal Coliforms and E. Coli); Final Rule (26 pp, 5 M). The purpose of the 1989 TCR is to protect public health by ensuring the integrity of the drinking water distribution system and monitoring for the presence of microbial contamination.