Monitoring DC Water Potomac Interceptor Collapse
Montgomery County’s Department of Health and Human Services and Department of Environmental Protection (DEP) are actively monitoring the work of DC Water to address the sanitary sewer overflow near the Clara Barton Parkway, in conjunction with the Maryland Department of the Environment and Maryland Department of Health. Throughout the response period, DEP (through its two Board Members on DC Water) has provided input and proposed questions to DC Water on environmental remediation.
DC Water is responsible for containment, repairs, environmental testing, and remediation related to the sewer overflow. Montgomery County will continue to share updates and health guidance as new information becomes available.
Health Advisory from Montgomery County
- Statement from County Health Officer Dr. Kisha Davis on Health Guidance for Area Affected by the Potomac Interceptor Collapse (Feb. 27, 2026)
DC Water
- Comprehensive Background on the Potomac Interceptor and Inspection Reports;
- Community Meetings
- Explanation of the January 19th Pipe Collapse
- Bacterial Sampling Results
- Environmental Rehabilitation Plan (pdf)
- Potomac Interceptro Updates
- FAQs from DC Energy & Environment
Maryland Department of Environment
- Potomac Interceptor Information with map and more;
- Press Releases
- Environmental Impacts
- Timeline of the Response
- Shellfish Water Sampling Locations and Results (pdf)
- Non-Shellfish Sampling Results (pdf)