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

Placeholder DC Water Image

DC Water will replace a defective valve on a 30-inch water main on the outbound side of the Key Bridge tonight, Friday, October 9, 2026.

Photo of Potomac River in Montgomery County MD

Expanded testing by DC Water found that the Potomac River is healthy and that there is no evidence of lasting harm to the river from January's collapse of the Potomac Interceptor sewer line.

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Rate increase kept below 6 percent as DC Water continues essential improvements and offers help with bills.

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 14, 2026
Wednesday, 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.