Impaired Waters and TMDLs in Region 3
EPA Region 3 serves Pennsylvania, Maryland, Delaware, Virginia, West Virginia and the District of Columbia, as well as 7 federally recognized tribal nations.
On this page:
- Public Notices
- Chesapeake Bay TMDL
- Search for specific impaired waters and TMDLs
- Current Projects
- State-specific information and actions
Contact Region 3: Impaired Waters and TMDLs Staff
Public Notices
Chesapeake Bay TMDL
Search for Specific Impaired Waters and TMDLs
- For the latest surface water quality assessment decision data, please visit How’s My Waterway, or visit the ATTAINS website.
Current Projects
- Public Meeting: Baltimore County to Provide Update on its Investigation to Track Down Hot-Spots and Sources of PCBs
- The EPA, in collaboration with the Baltimore County Department of Environmental Protection and Sustainability and the Maryland Department of the Environment (MDE), will host a public meeting to share the results of a preliminary investigation to track down hot-spots and sources of polychlorinated biphenyls (PCBs) in Baltimore County. Representatives from Baltimore County will share the results of their preliminary investigation and discuss next steps. Representatives from MDE will also be present to provide background information on the PCB TMDL Implementation and Source Track Down Guidance.
- The public meeting will be held on March 24, 2026 from 6 to 7 p.m. at the Marshy Point Nature Center (7130 Marshy Point Rd. Middle River, MD 21220). Attendees may join in person or virtually. To join the public meeting virtually, follow the instructions below:
To Join on the Microsoft Teams Application
Meeting ID: 219 635 671 449 20
Passcode: nc3bW3zb
To Dial in by phone
+1 484-352-3221,,901843794# United States, Philadelphia
Phone conference ID: 901 843 794#
To Join on a video conferencing device
Tenant key: sip:teams@video.epa.gov
Video ID: 116 667 971 1
- For more information, please contact Jillian Cudnik, project lead, at Cudnik.jillian@epa.gov
Water Quality Modeling to Support Source Water and Aquatic Life Protection, Octoraro Creek, Pennsylvania and Maryland
- This project supports water quality monitoring and development of a water quality model to guide restoration planning efforts for the Octoraro Creek Watershed. The data and model along with tools to evaluate nutrient and sediment reduction strategies will guide Pennsylvania Department of Environmental Protection and local partners develop plans for supporting a healthy ecosystem and protecting drinking water. For more information, please contact Ashley Geiger, project lead, at geiger.ashley@epa.gov.
- Octoraro Modeling Project Scenario Planning Meeting--January 31st, 2022 (link to recording)
- Water Quality Model Stakeholder Meeting-- April 25th, 2023 (link to recording)
Fish Tissue Sampling for PCBs in the Gunpowder River Watershed, Maryland
- EPA completed fish tissue sampling for polychlorinated biphenyls (PCBs) in October 2023, in Seneca Creek, Saltpeter Creek, and the Gunpowder River. These sampling results were submitted to the Maryland Department of the Environment (MDE) for evaluation in their ensuing CWA section 305(b)/303(d) integrated reporting, as well as for consideration in Maryland’s fish consumption advisory. For more information, please contact Hunter Pates, project lead, at pates.hunter@epa.gov.
- Fish Tissue Sampling Results (October 2023) (pdf)
State-specific Information and Actions
- Delaware
- District of Columbia
- Maryland
- Pennsylvania
- Virginia
- West Virginia
Contact information for EPA Region 3 303(d) staff can be found at Contact Us About Impaired Waters and TMDLs.