Regulatory Determination 4
The Safe Drinking Water Act (SDWA) directs the EPA to publish a list of contaminants (referred to as the Contaminant Candidate List, or CCL) to assist in priority-setting efforts. The SDWA also directs the EPA to select no fewer than five contaminants from the current CCL and determine whether to regulate these contaminants with a National Primary Drinking Water Regulation (NPDWR). A regulatory determination is a decision on whether the EPA should initiate a rulemaking process to develop an NPDWR for a specific contaminant. Learn more.
Preliminary Regulatory Determinations for CCL 4
On February 20, 2020, the EPA announced and requested public comment on the preliminary regulatory determinations for eight contaminants on the fourth Contaminant Candidate List (CCL 4).
The EPA is making preliminary determinations to regulate perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) in drinking water and to not regulate six contaminants (i.e., 1,1-dichloroethane, acetochlor, methyl bromide (bromomethane), metolachlor, nitrobenzene, and RDX).
The EPA is taking public comment on these preliminary determinations until May 11, 2020 (60 days after publication in the Federal Register). Instructions for submitting comments are included in the announcement in the Federal Register via https://www.regulations.gov Docket ID No. EPA-HQ-OW-2019-0583.
- Federal Register Notice: Announcement of Preliminary Regulatory Determinations for the Fourth Drinking Water Contaminant Candidate List
- Press Release: EPA Announces Proposed Decision to Regulate PFOA and PFOS in Drinking Water
- Technical Support Documents for Preliminary Regulatory Determinations 4 are available on www.regulations.gov: Docket ID No. EPA-HQ-OW-2019-0583.
- Infographic: Understanding How EPA Develops New Drinking Water Regulations
- SDWA Evaluation and Rulemaking Process
- Information on PFAS