Data / Federal rules / 2024-07450

Mercury Criterion To Protect Aquatic Life in Idaho

The Environmental Protection Agency published this proposed rule in the Federal Register on April 9, 2024. Comments closed on June 10, 2024.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to promulgate a Federal Clean Water Act (CWA) chronic aquatic life ambient water quality criterion for waters under the state of Idaho's jurisdiction to protect aquatic life from the effects of exposure to harmful concentrations or levels of total mercury (i.e., including methylmercury and inorganic mercury). In 2008, the EPA disapproved the state's revision of its mercury aquatic life criteria. The state has not adopted and submitted revised mercury aquatic life criteria to the EPA to address the EPA's 2008 disapproval. Therefore, the EPA is proposing a Federal mercury criterion to protect aquatic life uses in Idaho.

Key facts

Document number: 2024-07450
Type: Proposed rule
Action: Proposed rule; notice of public hearing
Agency: Environmental Protection Agency
Published: April 9, 2024
Comments due: June 10, 2024
Dates: Comments must be received on or before June 10, 2024. Public Hearing: The EPA will hold two public hearings during the public comment period. Please refer to the SUPPLEMENTARY INFORMATION section for additional information on the public hearings.
Docket: EPA-HQ-OW-2023-0325; FRL 11009-03-OW
Regulation ID (RIN): 2040-AG35
Code of Federal Regulations: 40 CFR 131
Topics: Environmental protection; Indians-lands; Intergovernmental relations; Reporting and recordkeeping requirements; Water pollution control
Pages: 18

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on environmental protection · Rules on indians-lands · Rules on intergovernmental relations · Published in April 2024

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.