PUBLIC MEETING NOTICE: DC Water to Provide Update and Next Steps on Potomac Interceptor Response

February 21, 2026
Graphic with details about the two community meetings.

DC Water will host two community meetings to provide a comprehensive update on the Potomac Interceptor response, current system status, and next steps in emergency repair and long-term rehabilitation efforts.

The meetings will provide a structured overview of:

  • What occurred
  • Immediate response actions
  • Current repair timeline
  • Long-term Capital Improvement Plan commitments

DC Water officials and technical staff will present information directly and answer questions from community members.

Meeting Information

Wednesday, February 25 - Washington, DC

What: Community Meeting on Potomac Interceptor Response

Where: DC Water Headquarters, 1385 Canal St SE, Washington, DC 20003

Time: 7:00 PM

Who:

David L. Gadis, CEO and General Manager, DC Water

Matt Brown, Chief Operating Officer, DC Water

Kirsten Williams, Chief Administrative Officer, DC Water

Moussa Wone, Chief Engineer, DC Water

Jeff Peterson, Director, Clean Rivers Project, DC Water

 

Thursday, February 26 – Bethesda, Maryland

What: Community Meeting on Potomac Interceptor Response

Where:
Walt Whitman High School (cafeteria), 7100 Whittier Blvd., Bethesda, MD 20817

Time: 7:00 PM

Who:

David L. Gadis, CEO and General Manager, DC Water

Matt Brown, Chief Operating Officer, DC Water

Kirsten Williams, Chief Administrative Officer, DC Water

Moussa Wone, Chief Engineer, DC Water

Jeff Peterson, Director, Clean Rivers Project, DC Water

Background

On January 19, 2026, a section of the 54-mile Potomac Interceptor (PI) sewer line collapsed along Clara Barton Parkway, in Montgomery County, resulting in a significant overflow into the C & O Canal National Historical Park. The PI carries about 60 million gallons of wastewater daily from as far away as Dulles Airport to the Blue Plains Advanced Wastewater Treatment Plant in Southwest DC for treatment.

DC Water crews and contractors began work immediately to construct a bypass to contain the overflow. The bypass was completed and activated on January 24, utilizing powerful pumps and the C&O Canal to reroute wastewater around the collapsed section of pipe and back into the sewer system. o additional overflows entering the Potomac River have occurred since February 8. Crews are removing rocks and debris from the collapsed section of pipe and emergency repairs are projected to be completed by mid-March.

Protecting public health and the Potomac River remains DC Water’s top priority. For the latest information about the Potomac Interceptor Response, go to dcwater.com/potomac-interceptor-collapse.

Latest News

A section of the canal where the soil has been removed
  • Crews are close to completing the removal of remaining soil from Locks 11 to 13 in the section of the C&O Canal that was used as an emergency bypass after the collapse of the Potomac Interceptor sewer ...
Excavation site outside the I-495 Beltway showing section of the PI

Crews completed cleaning on Lock 11 of the C & O Canal as prescribed by the National Park Service, with soil removal also nearing completion within the lock area. Tree removal is also underway, after DC Water received the permits to move forward as part of the site preparations for the long-term accelerated rehabilitation of more than 2700 linear feet of the Potomac Interceptor sewer line that had been previously planned.

Photo of long stretch of C & O Canal with soil removed

DC Water has excavated a section of the Potomac Interceptor along Clara Barton Parkway, outside the I-495 Beltway as part of the accelerated rehabilitation of more than 2700 linear feet of the interceptor that was previously planned. As part of the long-term rehabilitation project, crews are beginning to remove trees which is necessary to construct a bypass chamber that will divert wastewater around sections of the pipe while they are being rehabilitated.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

The shields for the tunnel boring machine Mary being lowered by cranes into the shaft
DC Water Earns Prominent Award for Sustainable Finance Leadership through Green Bonds

Recognition highlights DC Water’s commitment to environmental stewardship during Earth Month

DC Water has been honored with the “Green Bond of the Year – US Muni Bond” Award by Environmental Finance, a leading industry publication. This achievement celebrates DC Water’s leadership in sustainability and its dedication to responsible municipal financing.

Latest Blog Post
A helicopter lowers a drill rig to workers on the Potomac River.
DC Water begins drilling in Potomac River to explore options to rehab underwater sewer line
When one of your major sewer lines runs through the Potomac River, a backhoe and trencher won't do. That's why we've got helicopters carrying a 14-ton drill and workers suspended midair over the Potomac.
Upcoming Meeting
Date
May 5, 2026
Tuesday, 1:00 PM

Upcoming Events

Customer Service Center Announcement

Payment Plan Incentive: provides a credit back of 50% of the last 3 payments made. Eligible participants are residential customers who have had an outstanding balance for 60 days or greater and with an outstanding balance of $500 or more.