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. 

• National Primary Drinking Water Regulations Total Coliforms Final Rule (PDF)(26 pp, 6 MB, June 29 1989)