EMERGENCY WATER MAIN REPAIR
Feb 08, 2026 | 05:30 AM

EMERGENCY WATER MAIN REPAIR
Feb 08, 2026 | 04:30 AM

EMERGENCY WATER MAIN REPAIR
Feb 08, 2026 | 04:00 AM

PUBLIC MEETING ON PROJECTS TO CONTROL COMBINED SEWER OVERFLOWS TO THE ANACOSTIA RIVER

September 16, 2009

Who: The District of Columbia Water and Sewer Authority (DC WASA) invites citizens, employees and interested parties in the District of Columbia to this public meeting

What: Public meeting on the projects to control combined sewer overflows to the Anacostia River

When: September 17, 2009 — 6:00 p.m.

Where: Washington Highlands Library, 115 Atlantic Avenue, SW

Background:
DC WASA is implementing a Long Term Control Plan (LTCP) to control combined sewer overflows (CSOs) to the Anacostia and Potomac Rivers and Rock Creek. The Authority is preparing an Environmental Information Document (EID) for Anacostia River CSO Control Projects located between the Authority’s advanced wastewater treatment plant at Blue Plains and RFK Stadium.

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About The District of Columbia Water and Sewer Authority
The District of Columbia Water and Sewer Authority (DC WASA) is an industry-leading authority of District government that provides drinking water and wastewater collection and treatment for a population of more than 500,000 in the District of Columbia. DC WASA also treats wastewater for a population of 1.6 million in Montgomery and Prince Georges counties in Maryland, and Fairfax and Loudoun counties in Virginia. The Authority operates the world’s largest advanced wastewater treatment plant, with a capacity of 370 million gallons per day and a peak daily capacity of more than a billion gallons. DC WASA’s service area covers approximately 725 square miles.

Latest News

Trench boxes at construction site for new pit accessing Potomac Interceptor Upstream

DC Water and its contractors continue to make progress constructing new access points to the Potomac Interceptor, one upstream of the damaged section, and an additional entry downstream to divert more wastewater flow from the pipe. These access points will allow crews to install a bulkhead, blocking flow in the pipe upstream of the collapsed area, keeping the site as dry as possible so crews can safely remove an extensive rock dam currently blocking the pipe.

Photo of giant rock and boulder removed

DC Water is releasing new findings regarding the environmental impacts following the January 19, collapse in a section of the Potomac Interceptor. Based on flow monitoring data collected before and after interim bypass pumping was activated, DC Water estimates approximately 243 million gallons of wastewater has overflowed from the collapse site.

Image of rock blockage taken by CCTV inside the Potomac Interceptor downstream of the collapse

Update on Extended Repairs, Safety Measures, and Water Quality Monitoring

Overnight CCTV inspection of the Potomac Interceptor revealed the blockage inside the collapsed sewer line is far more significant, showing a large rock dam stretching approximately 30 feet downstream of the original failure.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Picture of new bike pedestrian path and traffic detour
New Path for Capital Crescent Trail Opens at Georgetown Waterfront Park

DC CLEAN RIVERS – POTOMAC RIVER TUNNEL PROJECT
If you bike, drive, or walk through Georgetown, we’ve got changes starting this week around the Potomac River Tunnel construction on Water Street NW. The Capital Crescent Trail has a new temporary detour through Georgetown Waterfront Park, open now for cyclists between 33rd and Potomac streets NW.

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
February 19, 2026
Thursday, 9:30 AM

Upcoming Events

Customer Service Center Announcement

Payment Plan Incentive: provides a credit back of 40% of the last 3 payments made and in the new fiscal year 50% will be credited. 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.