Learn the Issues

2004 NPDES CSO Report to Congress

This report, delivered to Congress on Thursday, August 26, 2004, presents a comprehensive characterization of CSOs and SSOs, including the extent of environmental and human health impacts caused by CSOs and SSOs.

Stormwater Discharges from Transportation Sources

Transportation authorities manage the runoff on street, road, and highways that has polluted by cars, trucks, buses, and other vehicles.

National Pretreatment Program Hauled Waste

Overview of regulations and guidance for the hauling and removal of transported hazardous (hauled) waste.

NPDES Stormwater Rules and Notices

List of stormwater rules and notices documents.

EPA's 2012 Construction General Permit (CGP) and Related Documents

List of documents for construction general permits.

NPDES Water-Quality Based Permit Limits for Recreational Water Quality Criteria

This set of Frequently Asked Questions (FAQ) provides an overview of NPDES permittingapplicable to continuous dischargers.

Peak Flows at Sewage Treatment Plants

In April 2018, EPA announced a new rulemaking to look at issues associated with the management and treatment of peak flows during wet weather events at publicly owned treatment works (POTWs) with separate sanitary sewer systems.

Water Quality Trading on a Watershed Scale

This paper describes three factors that water quality trading program managers may want to consider when evaluating the appropriate scale for a trading area

NPDES Regulations

NPDES regulatory documents, fact sheets, and federal registry.

Water Pollution Control (Section 106) Grants

The Water Pollution Control (Section 106) Grants website provides grant recipients, and those interested in receiving such grants, information, resources, and guidance for the grant program.

Tribal Clean Water Act Programs and Grants in EPA's Pacific Southwest (Region 9)

EPA's Tribal Water Office in Region 9 manages all grants related to the Clean Water Act for over 100 federally recognized Tribes and provides programmatic and technical assistance for water quality standards and CWA grant programs.

Clean Water State Revolving Fund (CWSRF)

How the Clean Water State Revolving Fund works, how to obtain funding, program eligibility, innovative ways to use the funds to get the greatest water quality benefits and leverage financial resources of the program, and share success stories.

Project Waiver of American Iron and Steel Requirements for 4-inch and 8-inch Stainless Steel Check Valves to the City of North Liberty, Iowa (DWSRF)

AIS waiver approval.

Project Waiver of American Iron and Steel Requirements for Small Diameter Ball Valves with Grooved Ends to Independence-Cross Creek Joint Sewer Authority, Pennsylvania (CWSRF)

AIS waiver approval.

Project Waiver of American Iron and Steel Requirements for 24-inch High Pressure Butterfly Valves to Marina Coast, California (CWSRF)

AIS approved waiver.

Project Waiver of American Iron and Steel Requirements to the Passaic Valley Sewerage Commission in New Jersey for 10-Inch Ball Valves

Project waiver of AIS requirements for New Jersey.