DC Water Repairing Sewer Line Near Rock Creek Park;

August 29, 2014

FOR IMMEDIATE RELEASE

Media Contacts: John Lisle, DC Water, 202-812-5006
Jenny Anzelmo-Sarles, National Park Service, 202-619-7177

DC Water crews are making repairs to a damaged sewer line in Adams Morgan, near Rock Creek Park. The 24-inch cast iron sewer dates back to 1885. On Wednesday, August 27, a DC Water inspection crew discovered a blockage in the sewer at 20th and Biltmore Streets, NW that resulted in a sanitary sewer overflow out of CSO outfall 40, which discharges to Rock Creek. The sewage did not come in contact with the ground. The overflow was estimated at 1,200 gallons of untreated waste.

DC Water responded immediately, setting up a bypass to direct sewage back into the sewer system while crews work to clear the blockage and make any needed repairs. The bypass was in place Thursday morning, effectively stopping the overflow, and allowing crews to being repairs.

A Sanitary Sewer Overflow (SSO) occurs when untreated wastewater spills or overflows. In this case, the waste was not mixed with stormwater.

The public is cautioned to avoid contact with the water in Rock Creek for 72 hours from below Calvert Street Bridge, south of the National Zoo, to the mouth of Rock Creek.
The NPS discourages public fishing and recommends creek users sanitize equipment which has come into contact with Rock Creek south of the outfall. DC Water advises the public to stay away from any sewer pipe discharge due to the potentially harmful substance it may contain.

With nearly 1,800 miles of sewer lines throughout its service area, DC Water appreciates notification from the public if a sewer back up is suspected. Please call the 24-hour Emergency Command Center at 202-612-3400 at any time to report water or sewer emergencies in the District of Columbia. More information on the sewer system can be found at dcwater.com.

Latest News

Image of the collapse site drained of water

Efforts to isolate the damaged section of pipe are moving forward. Engineers are on site and preparations are underway to permanently install a steel bulkhead gate that will cut off flow to the collapse site in combination with an enhanced bypass pumping system that will continue to divert wastewater around the failure and into the Potomac Interceptor further downstream. Once fully activated, the system will allow contractors to begin stabilizing the area around the break and initiate excavation down to the damaged pipe and rock dam.

Enhanced bypass with pumps and bulkhead gate in position

Potomac Interceptor Collapse Update
Tuesday, February 17, 2026

  • No overflow events impacting surface waters were reported overnight. No overflow events impacting surface waters have been reported since ...
Photo fo new access pit for enhanced bypass and pumps

Emergency repair expected to take 4-6 weeks, followed by long-term rehabilitation

DC Water crews and its contractors, working under challenging conditions over the past month, are nearing completion of an enhanced bypass system that will allow emergency repairs to begin on a damaged section of the Potomac Interceptor.

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 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.