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Water - General
National Summary
The CWA is the main federal law in the United States that addresses water pollution, and includes the National Discharge Elimination System (NPDES), which grants federal permits to operations that discharge to the waters of the United States, and Section 404, which enables the Army Corps of Engineers (Corps) to grant permits for certain activities within waterways and wetlands.
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Notices Public Meeting of the Great Lakes Advisory Board 05/07/2013National
Notices 2024 Clean Water Act Section 319 Guidelines 06/28/2024National
Proposed Regulations 40 CFR 118 and 300 - Clean Water Act Hazardous Substance Worst Case Discharge Planning Regulations; Extension of Comment Period 05/16/2022National
Proposed Regulations 40 CFR 120 - Deadline Extension for Regional Roundtable Discussions Regarding "Waters of the United States" 11/08/2021National
Proposed Regulations 40 CFR 121, 122 and 124 - Clean Water Act Section 401 Water Quality Certification Improvement Rule; Proposed Rule 06/09/2022National
Final Regulations 40 CFR 131 - Federal Aluminum Aquatic Life Criteria Applicable to Oregon 03/19/2021National
Proposed Regulations 40 CFR 131 - Mercury Criterion To Protect Aquatic Life in Idaho 04/09/2024National
Proposed Regulations 40 CFR 131 - Restoring Protective Human Health Criteria in Washington 04/01/2022National
Final Regulations 40 CFR 131 - Restoring Protective Human Health Criteria in Washington 11/18/2022National
Proposed Regulations 40 CFR 131 - Water Quality Standards Regulatory Clarifications; Proposed Rule 09/04/2013National
Final Regulations 40 CFR 131 - Water Quality Standards Regulatory Revisions To Protect Tribal Reserved Rights 05/02/2024National
Proposed Regulations 40 CFR 131 - Water Quality Standards Regulatory Revisions To Protect Tribal Reserved Rights 12/05/2022National
Proposed Regulations 40 CFR 131 - Water Quality Standards Regulatory Revisions To Protect Tribal Reserved Rights 12/05/2022National
Proposed Regulations 40 CFR 131 - Water Quality Standards Regulatory Revisions To Protect Tribal Reserved Rights 12/05/2022National
Proposed Regulations 40 CFR 131 - Water Quality Standards Regulatory Revisions To Protect Tribal Reserved Rights 12/05/2022National
Proposed Regulations 40 CFR 131 - Water Quality Standards To Protect Aquatic Life in the Delaware River 01/08/2024National
Final Regulations 40 CFR 131 - Water Quality Standards; Withdrawal of Certain Federal Water Quality Criteria Applicable to California: Lead, Chlorodibromomethane, and Dichlorobromomethane 10/16/2018National
Final Regulations 40 CFR 131 - Withdrawal of Certain Federal Water Quality Criteria Applicable to Maine 12/21/2020National
Proposed Regulations 40 CFR 131 - Withdrawal of Certain Federal Water Quality Criteria Applicable to Maine 09/03/2020National
Final Regulations 40 CFR 131 - Withdrawal of Certain Federal Water Quality Criteria Applicable to Washington 05/13/2020National
Final Regulations 40 CFR 136 - Guidelines Establishing Test Procedures for the Analysis of Pollutants Under the Clean Water Act 03/06/2013National
Final Regulations 40 CFR 228 - Ocean Disposal; Designation of an Ocean Dredged Material Disposal Site for the Southern Maine, New Hampshire, and Northern Massachusetts Coastal Region 09/25/2020National
Final Regulations 40 CFR 228 - Ocean Dumping Regulations: Atchafalaya-West Ocean Dredged Material Disposal Site Designation; Calcasieu, Sabine Neches, and Atchafalaya-East Site Corrections 01/03/2014National
Final Regulations 40 CFR 228 - Ocean Dumping: Cancellation of Final Designation for an Ocean Dredged Material Disposal Site 06/11/2020National
Final Regulations 40 CFR 228 - Ocean Dumping: Modification of an Ocean Dredged Material Disposal Site Offshore of Humboldt Bay, California 02/17/2021National
Proposed Regulations 40 CFR 228 - Ocean Dumping: Proposed Cancellation and Modification of Final Site Designations 04/21/2014National
Proposed Regulations 40 CFR 228 - Ocean Dumping; Atchafalaya-West Ocean Dredged Material Disposal Site Designation 05/21/2013National
Proposed Regulations 40 CFR 228 - Ocean Dumping; Atchafalaya-West Ocean Dredged Material Disposal Site Designation 06/24/2013National
Final Regulations 40 CFR 228 - Ocean Dumping; Sabine-Neches Waterway (SNWW) Ocean Dredged Material Disposal Site Designation 12/05/2013National
Final Regulations 40 CFR 228 - Ocean Dumping; Withdrawal of Designated Disposal Sites; Nome, Alaska 05/03/2024National
Final Regulations 40 CFR Parts 121, 122, and 124-Clean Water Act Section 401 Water Quality Certification Improvement Rule 09/27/2023National
Proposed Regulations 40 CFR Parts 131, 230 and 233 - Federal Baseline Water Quality Standards for Indian Reservations 05/05/2023National
Notices Acute Aquatic Life Screening Values for 6PPD and 6PPD-Quinone in Freshwater 06/13/2024National
Guidance Documents Addressing Climate Change in Long-term Water Resources Planning and Management  National
Notices An Assessment of Potential Mining Impacts on Salmon Ecosystems of Bristol Bay, Alaska 01/20/2014National
Notices Clean Water Act Class II: Proposed Administrative Settlement, Penalty Assessment and Opportunity To Comment Regarding T-Mobile US, Inc., Successor by Merger to MetroPCS Communications, Inc. 07/18/2013National
Notices Clean Water Act Section 303(d): Availability of List Decisions 06/19/2024National
Notices Clean Water Act Section 303(d): Availability of List Decisions 06/20/2024National
Notices Clean Water Act; Contractor Access to Confidential Business Information 05/15/2014National
Proposed Regulations Criminal Negligence Standard for State Clean Water Act 402 and 404 Programs 12/14/2020National