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

Photo of West Road where construction will take place

Beginning the week of April 21, 2025, DC Water will implement temporary traffic lane closures near Georgetown University’s Canal Road Northwest entrance to identify and mark underground utilities for ...

Map of Clara Barton Parkway near 495 with lane closures marked and site of incident damage

DC Water and its engineers will conduct an emergency inspection of a 78-inch sewer pipe located next to the Clara Barton Parkway. This follows an incident where a contractor working in the area ...

Picture inside Washington Aqueduct of pipes and tanks

It’s that time of year, when you start your spring cleaning and DC Water does too! Beginning on March 24 through May 4, we’ll be disinfecting our 1300 miles of water lines. It’s part of routine ...

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Photo of West Road where construction will take place
TRAFFIC ADVISORY: Canal Road NW Entrance to Georgetown University

Beginning the week of April 21, 2025, DC Water will implement temporary traffic lane closures near Georgetown University

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
April 22, 2025
Tuesday, 9:30 AM