Abstract |
This document summarizes criteria that the Environmental Protection Agency (EPA) uses for screening a universe of microbiological contaminants to identify those contaminants in the microbial CCL 3 universe to be placed on a Preliminary Contaminant Candidate List (PCCL). These criteria were developed in part following the recommendations of the National Research Council (NRC), the National Drinking Water Advisory Council (NDWAC) workgroup on the CCL process. The recommended screening process was reviewed by a panel of external experts, and the screening process described herein was derived from the subsequent deliberations of the EPA microbiology workgroup based upon the expert panel report. |