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Impaired Waters and TMDLs

Impaired Waters and TMDLs in Region 3

This image shows which states are included in EPA's Region 3: Delaware, District of Columbia, Maryland, Pennsylvania, Virginia and West Virginia.
EPA Region 3 serves Pennsylvania, Maryland, Delaware, Virginia, West Virginia and the District of Columbia.

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Contact Region 3 


Recent 303(d)/TMDL News in Region 3

Anacostia River Watershed: Data Solicitation Notice in Support of Revising Total Maximum Daily Loads (TMDLs) for Debris, Floatables, Trash

The U.S. Environmental Protection Agency (EPA) is seeking readily available data and information on debris, floatables, and/or trash in the Anacostia River watershed for use in the development of a TMDL. The Anacostia River watershed covers portions of the District of Columbia and Prince George’s and Montgomery Counties in Maryland.

Data submissions to EPA must be received by, or postmarked on or before, October 23, 2018.

Please direct questions to Jillian Adair (adair.jillian@epa.gov) or (215) 814-5713.

West Virginia 2014 Section 303(d) List

Please direct questions to Bill Richardson (richardson.william@epa.gov) or (215) 814-5675.

EPA Proposes Total Phosphorus TMDL for the Wissahickon Creek Watershed Notice of Availability, Solicitation of Public Comment

The public comment period for the proposed Total Phosphorus TMDL for the Wissahickon Creek Watershed in Pennsylvania is now closed. The public comment period was open from May 20, 2015 to July 30, 2015, during which EPA received numerous comments from the public and interested parties. To view the comments received, as well as the proposed TMDL and other supporting files provided during the public comment period, please click on the links below.

Please direct questions to Ashley Toy (toy.ashley@epa.gov) or (215) 814-2774.  


Search for Specific Impaired Waters and TMDLs


State-specific Information and Actions

Contact information for EPA Region 3 303(d) staff can be found at Contact Us About Impaired Waters and TMDLs.

Delaware 303(d) Assessment ProgramExit

Delaware TMDL ProgramExit

Most recent Delaware list of impaired waters:You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.2016 Delaware Combined Watershed Assessment Report (305(b)) and Determination for the Clean Water Act Section 303(d) List of Waters Needing TMDLs (PDF) (161 pp, 3.78 MB) Exit

Delaware 2016 Section 303(d) List Approval Letter and Decision Rationale (PDF)(8 pp, 443KB, October 17, 2017)

Contact information for EPA Region 3 303(d) staff can be found at Contact Us About Impaired Waters and TMDLs.

District of Columbia 303(d) Assessment ProgramExit

District of Columbia TMDL ProgramExit

Anacostia River Watershed, Prince George's and Montgomery Counties, Maryland, and the District of Columbia:

Anacostia River Watershed: Data Solicitation Notice in Support of Revising Total Maximum Daily Loads (TMDLs) for Debris, Floatables, Trash.

Most recent District of Columbia list of impaired waters:You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.2016 D.C. Integrated Report Sections 305(b) and 303(d) (PDF) (379 pp, 6.44 MB)Exit

District of Columbia 2016 Section 303(d) List Approval Letter and Decision Rationale (PDF) (8 pp, 71 K, February 2, 2017)

Contact information for EPA Region 3 303(d) staff can be found at Contact Us About Impaired Waters and TMDLs.

Maryland 303(d) Assessment ProgramExit

Maryland TMDL ProgramExit

Anacostia River Watershed, Prince George's and Montgomery Counties, Maryland, and the District of Columbia:

 

Anacostia River Watershed: Data Solicitation Notice in Support of Revising Total Maximum Daily Loads (TMDLs) for Debris, Floatables, Trash.