DC Water investigating Possible Sanitary Sewer Overflow in C & O Canal National Historical Park

May 16, 2014

FOR IMMEDIATE RELEASE
Media Contacts: John Lisle, DC Water, 202-812-5006
Jennifer Anzelmo-Sarles, National Park Service, 202-619-7400

DC Water is investigating a possible Sanitary Sewer Overflow (SSO) overnight in C & O Canal National Historical Park. An SSO occurs when diluted untreated wastewater spills or overflows, and can be caused by excessive rainfall. Due to the overflow, the Capital Crescent Trail is closed to the public between Water Street in Georgetown and Fletcher's Cove. The National Park Service recommends using the C&O Canal Tow Path as an alternate route in this location, but cautions that portions of the Tow Path prone to flooding may be closed farther upstream. Water levels are expected to peak Saturday afternoon.

In coordination with the National Park Service and U.S. Park Police, DC Water is cordoning off the affected areas and the public is reminded to respect these public health and safety closures. Untreated sewage can contain many pathogens causing a variety of illnesses ranging from e-coli to hepatitis. If people come in contact with the untreated overflow they risk getting sick and bringing these pathogens into their homes.

It is important to note that DC Water's drinking water system is separate from the wastewater system and is NOT affected by the overflows. DC Water's intake valves are on the Potomac River at Great Falls and Little Falls, far north of the District.

DC Water has mobilized repair crews and contractors and will take immediate action to decontaminate impacted areas of the Park. In addition, the Authority is investigating to determine the cause for this and a prior overflow on April 30.

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.

DC Water is committed to protecting the health of the public and the environment. The Clean Rivers Project is a $2.6 billion long-term project to add capacity to the combined sewer system and reduce combined sewer overflows. In addition, the project's enormous storage tunnels may also alleviate some SSOs.

Latest News

Map of lane closure on Clara Barton Parkway at Maryland-DC Border

Drivers should expect delays on Clara Barton Parkway at the Maryland – DC border on Saturday, Sept 26. One lane will be closed from 7 a.m. to 3 p.m. while DC Water makes repairs as part of ongoing ...

Christening of TBM Emily with DC Water Interim General Manager Matt Brown holding bottle of tap water to christen Emily

DC Water celebrated the christening of Emily today. It’s the second giant tunnel boring machine (TBM) that will help build the 5.5-mile Potomac River Tunnel. The celebration continued with Community Day. Residents and families met Emily and stepped inside the tunnel where she will soon begin digging.

Map: Temporary closure of the southbound curb lane on Rock Creek and Potomac Parkway NW

DC CLEAN RIVERS – POTOMAC RIVER TUNNEL PROJECT

Drivers should expect a temporary southbound lane closure on Rock Creek and Potomac Parkway NW between F St and Virginia Ave on Saturday, September 19, and Sunday, September 20, 2026. The closure will be in place from 7 a.m. to 7 p.m. each day, weather permitting.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Christening of TBM Emily with DC Water Interim General Manager Matt Brown holding bottle of tap water to christen Emily
DC Water Welcomes the Community Underground to See the Potomac River Tunnel and Christens Tunnel Boring Machine Emily

DC Water celebrated the christening of Emily today. It’s the second giant tunnel boring machine (TBM) that will help build the 5.5-mile Potomac River Tunnel. The celebration continued with Community Day. Residents and families met Emily and stepped inside the tunnel where she will soon begin digging.

Latest Blog Post
Emergency supplies arranged on a table, including bottled water, canned food, a backpack, first aid kit, flashlight, phone, medication and other essential items.
Simple Ways to Stay Prepared at Home
A few simple steps can help your household prepare for severe weather and temporary water or sewer service interruptions.
Upcoming Meeting
Date
October 8, 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.