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Data / Federal rules / 2024-15807

National Primary Drinking Water Regulations; Announcement of the Results of EPA's Fourth Review of Existing Drinking Water Standards

The Environmental Protection Agency published this final rule in the Federal Register on July 23, 2024.

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What the agency says

The Safe Drinking Water Act (SDWA) requires the U.S. Environmental Protection Agency (EPA or the agency) to conduct a review every six years of existing national primary drinking water regulations (NPDWRs) and determine which, if any, are appropriate for revision. The purpose of the review, called the Six-Year Review, is to evaluate available information for regulated contaminants to determine if any new information on health effects, treatment technologies, analytical methods, occurrence, exposure, implementation, and/or other factors provides a basis to support a regulatory revision that would improve or strengthen public health protection. While EPA has recently completed several significant revisions to existing regulations and other regulatory revisions are currently underway, based on this periodic review of all NPDWRs, there are no additional candidates for regulatory revision at this time.

Key facts

Document number
2024-15807
Type
Final rule
Action
Results of regulatory review
Agency
Environmental Protection Agency
Published
July 23, 2024
Dates
July 23, 2024.
Docket
EPA-HQ-OW-2023-0572; FRL 7946-01-OW
Code of Federal Regulations
40 CFR 141
Pages
23

The document on federalregister.gov PDF

Other documents from the Environmental Protection Agency

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Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.