What lies beneath?

June 19, 2008

Drinking water is a critical public service and one that most of us take for granted. We expect it to be there when we turn on the tap or flush the toilet. Not many of us think about the 1,300 miles of pipelines and the 36,000 valves that bring the water to us. They’re out of sight, out of mind. At least until there’s a problem, like a water main break that could damage roadways, cause traffic delays and put homes and businesses out of water until repairs are made.
According to the American Water Works Association (AWWA), much of our drinking water infrastructure was constructed between 80 and 100 years ago, and the cost of repairing and replacing these aging pipelines ranges between $280 to $400 billion. That means we will pay more for water, and it’s an investment worth making.
Much of the District’s water system is made out of cast iron pipes, some of which are more than 100 years old. Since its creation in 1996, DC WASA has made significant progress in stabilizing the city’s water infrastructure. But, there’s much more to be done. In its 10-year Capital Improvements Program, DC WASA plans to spend more than $600 million on water system improvements.
Out of sight, out of mind doesn’t work for infrastructure; not for the maze of pipelines, much of which were laid before most of us were born, that delivers a product that’s critical to our health, public safety, and quality of life.

Latest News

Map of construction area on Clara Barton Parkway near I495

DC Water will be doing construction as part of a sanitary sewer rehabilitation project on Clara Barton Parkway in Maryland from Sept 8 - Oct 10, 2025, which may cause delays inbound near the I-495 Beltway interchange. One lane will be closed in the work zone to reline an 800-foot section of the sewer line, known as the Potomac Inteceptor. Access to the inner and outer loops of the Beltway will remain available. Additional lane closure may be necessary intermittently through Oct 31, 2025.

Graphic highlighting the event

Join DC Water and Wendy the Water Drop for a fun, educational pop-up event and you can grab a refreshing sip of our water. It's all part of "Imagine a Day Without Water," a national day of action that ...

Graphic showing LFDC work on a block, date and time of the virtual meeting

There’s more than one way to replace your lead service line. Join DC Water’s Lead Free DC (LFDC) team and explore the options available to you during our virtual meeting on Wednesday, October 22, from ...

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Aerial View of Construction near Watergate Complex Shows cranes and construction of drop shaft underway
Scaffolding Installation Begins near Watergate Complex for Potomac River Tunnel Project

Rock Creek and Potomac Parkway NW Beginning September 23, 2025, to Mid-November 2025

DC Water is installing temporary scaffolding at the Rock Creek Trail site, west of the Watergate Complex. Trail users are advised to adhere to flagger instructions during installation.

Scaffolding installation is expected to be completed by September 26, 2025, and will remain in place until mid-November 2025.

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
October 23, 2025
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.