Microbial Rules (Renewal)

The Microbial Rules Renewal ICR examines public water system, air carrier and primacy agency burden and costs for recordkeeping and reporting requirements in support of the microbial drinking water regulations. These recordkeeping and reporting requirements are mandatory for compliance with 40 CFR parts 141 and 142. The following microbial regulations are included: the Surface Water Treatment Rule (SWTR), the Total Coliform Rule (TCR), the Revised Total Coliform Rule (RTCR), the Interim Enhanced Surface Water Treatment Rule (IESWTR), the Filter Backwash Recycling Rule (FBRR), the Long Term 1 Enhanced Surface Water Treatment Rule (LT1ESWTR), the Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR), the Ground Water Rule (GWR) and the Aircraft Drinking Water Rule (ADWR). Future microbial-related rulemakings will be added to this consolidated ICR after the regulations are promulgated and the initial, rule-specific, ICRs are due to expire.

The latest form for Microbial Rules (Renewal) expires 2022-07-31 and can be found here.

Microbial Rules - Public Water Systems

Federal Enterprise Architecture: Environmental Management - Environmental Remediation