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NPDES
National Summary
The National Pollutant Discharge Elimination System (NPDES) permit program was established under the Clean Water Act (CWA) and regulates discharges of pollutants from point sources (pipe, ditch, well, etc.) to U.S. waters. Under NPDES, all facilities that discharge pollutants from any point source into waters of the United States are required to obtain a permit. The permit provides two levels of control: technology-based limits (based on the ability of dischargers in the same industrial category to treat wastewater) and water-quality-based limits (if technology-based limits are not sufficient to provide protection of the water body).
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Proposed Regulations 05/25/01 - Proposed Rule - NPDES Regulations Addressing Cooling Water Intake Structures for New Facilities (40 CFR Parts 9, 122-125) 09/01/2001National
Proposed Regulations 07/06/01 - Notice - Effluent Limitations Guidelines and New Source Performance Standards for the Construction and Development Point Source Category (40 CFR Part 45) 07/15/2001National
Proposed Regulations 07/06/01 - Notice - Reopening of Comment Period for Certain Documents; NPDES Regulations Addressing Cooling Water Intake (40 CFR Parts 9, 122-125) 07/15/2001National
Final Regulations 07/27/01 - Notice - Reissuance of the NPDES General Permit for Seafood Processors Operating Throughout Alaska in Waters of the U.S. (NPDES General Permit No. AK-G52-0000) 08/06/2001National
Final Regulations 40 CFR 122 - Amendments to the NPDES Regulations for Stormwater Discharges Associated With Oil and Gas Exploration, Production, Processing, or Treatment Operations or Transmission Facilities 06/12/2006National
Proposed Regulations 40 CFR 122 - Amendments to the NPDES Regulations for Stormwater Discharges Associated With Oil and Gas Exploration, Production, Processing, or Treatment Operations, or Transmission Facilities 01/06/2006National
Proposed Regulations 40 CFR 122 - Extension of NPDES Permit Deadline for Storm Water Discharges for Oil and Gas Construction Activity That Disturbs 1 to 5 Acres 01/18/2005National
Proposed Regulations 40 CFR 122 - Extension of Public Comment Period for the NPDES Water Transfers Proposed Rule 07/24/2006National
Final Regulations 40 CFR 122 - National Pollutant Discharge Elimination System Water Transfers Rule 06/13/2008National
Proposed Regulations 40 CFR 122 - NPDES Water Transfers Proposed Rule 06/07/2006National
Proposed Regulations 40 CFR 122 - Public Meeting To Discuss Technical Issues Associated With the NPDES Stormwater Permit Coverage for Small Oil and Gas Construction Activities 04/11/2005National
Proposed Regulations 40 CFR 122 and 123 - NPDES Permit Requirements for Municipal Wastewater Treatment Discharges During Wet Weather Conditions 01/09/2004National
Proposed Regulations 40 CFR 122 and 123 - NPDES Permit Requirements for Peak Wet Weather Discharges From POTWs Treatment Plants Serving Separate Sanitary Sewer Collection Systems 12/22/2005National
Proposed Regulations 40 CFR 122 and 125 - National Pollutant Discharge Elimination System--Cooling Water Intake Structures at Existing Facilities and Phase I Facilities 04/20/2011National
Proposed Regulations 40 CFR 122 and 133 - NPDES Permit Requirements for Municipal Wastewater Treatment Discharges During Wet Weather Conditions 11/07/2003National
Proposed Regulations 40 CFR 122 and 136 - National Pollutant Discharge Elimination System: Use of Sufficiently Sensitive Test Methods for Permit Applications and Reporting 06/23/2010National
Proposed Regulations 40 CFR 122 and 412 - Extension of Public Comment Period for the NPDES Permit Regulation and Effluent Limitation Guidelines for CAFOs in Response to Waterkeeper Decision Proposed Rule 08/04/2006National
Proposed Regulations 40 CFR 122 and 412 - NPDES Permit Regulation and Effluent Limitations Guidelines and Standards for Concentrated Animal Feeding Operations 07/05/2006National
Proposed Regulations 40 CFR 122 and 412 - Proposed Revised Compliance Dates Under NPDES Permit Regulations and Effluent Limitations Guidelines and Standards for CAFOs 05/10/2007National
Proposed Regulations 40 CFR 122 and 412 - Revised Compliance Dates for NPDES Permit Regulation and Effluent Limitation Guidelines for Concentrated Animal Feeding Operations 12/21/2005National
Proposed Regulations 40 CFR 122 and 412 - Revised NPDES Permit Regulation and Effluent Limitation Guidelines for CAFOs in Response to Waterkeeper Decision 06/30/2006National
Proposed Regulations 40 CFR 122, 123, 124, and 125 - NPDES--Proposed Regulations to Establish Requirements for Cooling Water Intake Structures at Existing Facilities; Notice of Data Availability Related to EPA's Stated Preference Survey 06/12/2012National
Proposed Regulations 40 CFR 122, 123, 403, 501, and 503 - Public Meeting With Interested Stakeholders for National Pollutant Discharge Elimination System (NPDES) Electronic Reporting Rule 07/01/2010National
Proposed Regulations 40 CFR 123 - State Program Requirements; Revision of the Approved National Pollutant Discharge Elimination System (NPDES) Program in North Dakota 03/29/2004National
Proposed Regulations 40 CFR 123 and 501 - Water Pollution Control; Program Modification Application by Arizona to Administer the Sewage Sludge Management (Biosolids) Program 11/21/2003National
Proposed Regulations 40 CFR 125 - NPDES--Amendment of Final Regulations Addressing Cooling Water Intake Structures for New Facilities 12/26/2002National
Final Regulations 40 CFR 125 - NPDES--Amendment of Final Regulations Addressing Cooling Water Intake Structures for New Facilities 06/19/2003National
Final Regulations 40 CFR 125 - NPDES--Amendment of Final Regulations Addressing Cooling Water Intake Structures for New Facilities; Rule and Proposed Rule 12/26/2002National
Proposed Regulations 40 CFR 125 - NPDES--Proposed Regulations To Establish Requirements for Cooling Water Intake Structures at Phase II Existing Facilities; Notice of Data Availability 03/19/2003National
Proposed Regulations 40 CFR 35 - NPDES Permit Fee Incentive for Clean Water Act Section 106 Grants; Allotment Formula 01/04/2007National
Final Regulations 40 CFR 35 - NPDES Voluntary Permit Fee Incentive for Clean Water Act Section 106 Grants; Allotment Formula 09/10/2008National
Proposed Regulations 40 CFR 35 - Proposed NPDES Permit Fee Incentive for Clean Water Act Section 106 Grants--Allotment Formula; Public Meeting 01/30/2007National
Proposed Regulations 40 CFR 35 - Reopening of Public Comment Period for the NPDES Permit Fee Incentive for Clean Water Act Section 106 Grants; Allotment Formula 03/15/2007National
Final Regulations 40 CFR 35 - Withdrawal of NPDES Voluntary Permit Fee Incentive for Clean Water Act Section 106 Grants; Allotment Formula 04/15/2009National
Proposed Regulations 40 CFR 413 - Effluent Limitations Guidelines, Pretreatment Standards, and New Source Performance Standards for the Metal Products and Machinery Point Source Category; Notice of Data Availability 06/12/2002National
Proposed Regulations 40 CFR 9 and 122 - National Pollutant Discharge Elimination System (NPDES) Concentrated Animal Feeding Operation (CAFO) Reporting Rule 10/21/2011National
Final Regulations 40 CFR 9, 122 et al. - NPDES; Final Regulations To Establish Requirements for Cooling Water Intake Structures at Phase II Existing Facilities 07/09/2004National
Proposed Regulations 40 CFR 9, 122, 123, 124, and 125 - NPDES Proposed Regulations To Establish Requirements for Cooling Water Intake Structures at Phase III Facilities 11/28/2005National
Proposed Regulations 40 CFR 9, 122, 123, 124, and 125 - NPDES, Establishment of Requirements for Cooling Water Intake Structures at Phase III Facilities 11/24/2004National
Final Regulations 40 CFR 9, 122, 123, 124, and 125 - NPDES--Final Regulations To Establish Requirements for Cooling Water Intake Structures at Phase III Facilities 06/16/2006National
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