Environmental Protection Agency
The U.S. Environmental Protection Agency (EPA) is announcing final regulatory determinations for nine contaminants listed on the fifth Contaminant Candidate List. Specifically, the Agency is making final determinations not to regulate 2-aminotoluene, cylindrospermopsin, ethoprop, microcystins, molybdenum, permethrin, profenofos, tebuconazole, and tribufos. The Safe Drinking Water Act (SDWA) requires the EPA to make regulatory determinations every five years on at least five unregulated contaminants. A regulatory determination is a decision about whether or not to begin the process to propose and promulgate- a national primary drinking water regulation (NPDWR) for an unregulated contaminant.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Part 141 [EPA-HQ-OW-2024-0456; FRL-10774-02-OW] AGENCY: Environmental Protection Agency (EPA). ACTION: Regulatory determinations. SUMMARY: The U.S. Environmental Protection Agency (EPA) is announcing final regulatory determinations for nine contaminants listed on the fifth Contaminant Candidate List. Specifically, the Agency is making final determinations not to regulate 2-aminotoluene, cylindrospermopsin, ethoprop, microcystins, molybdenum, permethrin, profenofos, tebuconazole, and tribufos. The Safe Drinking Water Act (SDWA) requires the EPA to make regulatory determinations every five years on at least five unregulated contaminants. A regulatory determination is a decision about whether or not to begin the process to propose and promulgate- a national primary drinking water regulation (NPDWR) for an unregulated contaminant. DATES: For the purpose of judicial review, the determinations not to regulate in this document are issued as of March 19, 2026. FOR FURTHER INFORMATION CONTACT: George Gardenier, Standards and Risk Management Division, Office of Ground Water and Drinking Water (Mail Code 4607M), Environmental Protection Agency, 1200 Pennsylvania Avenue NW, Washington, DC 20460; telephone number: (202) 564-3333; email address: gardenier.george@epa.gov . SUPPLEMENTARY INFORMATION: Abbreviations Used in This Document ATSDR Agency for Toxic Substances and Disease Registry CCL Contaminant Candidate List CCL 5 Fifth Contam…
Other Federal Register documents from the same docket.
Citation: 91 FR 13227
