DC Water

DC Water David Gadis, CEO and General Manager

The District of Columbia Water and Sewer Authority provides drinking water and wastewater services to residents, visitors and employees of the District and parts of the surrounding area.

Critical repair work at Broad Run is now complete. ✅Crews have finished strengthening 490 feet of the Potomac Intercepto...
09/03/2026

Critical repair work at Broad Run is now complete. ✅

Crews have finished strengthening 490 feet of the Potomac Interceptor in Loudoun County, restoring the damaged section to like-new condition.

Broad Run is the second of four high-priority repair locations completed, following repairs near Washington Dulles International Airport last month. Work continues at Pennyfield Lock and along Clara Barton Parkway near the Maryland–DC line.

Read the latest on the repairs and what’s next: https://www.dcwater.com/about-dc-water/media/news/dc-water-completes-critical-potomac-interceptor-sewer-line-repairs-broad

🚧 STARTING TONIGHT: We will temporarily close one lane of Clara Barton Parkway at the Maryland-D.C. border from 8 p.m. t...
08/31/2026

🚧 STARTING TONIGHT: We will temporarily close one lane of Clara Barton Parkway at the Maryland-D.C. border from 8 p.m. to 4 a.m. through Friday, September 4.

The closure is needed so crews can safely begin applying geopolymer, a concrete-like material, inside approximately 400 feet of the Potomac Interceptor as part of emergency sewer repairs. The work is scheduled overnight, when fewer cars are on the road, to reduce traffic delays.

Other lanes will remain open in both directions. Drivers should slow down, watch for signs and flaggers, and expect short delays.

Learn more: https://www.dcwater.com/about-dc-water/media/news/traffic-advisory-temporary-overnight-lane-closure-clara-barton-parkway-0

✅ Another major milestone complete.The Potomac Interceptor Rehabilitation Project has reached another key milestone with...
08/31/2026

✅ Another major milestone complete.

The Potomac Interceptor Rehabilitation Project has reached another key milestone with the successful installation of a cured-in-place pipe (CIPP) liner near Broad Run in Loudoun County, Virginia. This work strengthens the existing sewer pipe from the inside, extending its service life and helping reduce the risk of future failures.

What's next? Crews will apply geopolymer lining to two manholes, followed by site restoration and demobilization activities, bringing this phase of the rehabilitation project one step closer to completion.

Most people never get to see what a tunnel boring machine looks like once it's underground.These photos provide a rare l...
08/31/2026

Most people never get to see what a tunnel boring machine looks like once it's underground.

These photos provide a rare look inside tunnel
boring machine Mary and the network of equipment that keeps the 700-foot-long system operating deep beneath the District.

From the support train to the machinery working behind the cutterhead, the images reveal parts of the operation we haven't shared before.

It's an impressive reminder of the engineering and teamwork driving the Potomac River Tunnel Project more than 100 feet below street level.💧

Sometimes the most important work happens underground. As part of our critical sewer line repairs on the Potomac Interce...
08/28/2026

Sometimes the most important work happens underground.

As part of our critical sewer line repairs on the Potomac Interceptor near Broad Run in Loudoun County, our crews discovered a damaged section of pipe where groundwater was getting into the system.

To fix the problem, we closed the opening and reinforced the pipe inside and out with geopolymer, a strong concrete-like material that reinforces and strengthens the pipe. Rehabilitating the sewer line is critical to keep this essential infrastructure safe and reliable for years to come.

As we wrap up National Water Quality Month, we’re taking a closer look at the source behind every drop.The Potomac River...
08/28/2026

As we wrap up National Water Quality Month, we’re taking a closer look at the source behind every drop.

The Potomac River is DC Water’s only source of drinking water. DC Water works with regional utilities, government agencies and other partners to help protect the river and keep our shared watershed clean and healthy.

You can help protect the Potomac by preventing litter and pet waste from entering storm drains, using lawn and garden chemicals responsibly, properly disposing of household waste and reporting spills that could enter our waterways.

Learn more in our 2026 Drinking Water Quality Report:https://www.dcwater.com/sites/default/files/document/2026-06/documents/2026_CCR_6.11.26_FINAL.pdf

Big milestone for the Potomac River Tunnel Project! 🎉DC Water's tunnel boring machine, Mary, is now fully assembled and ...
08/27/2026

Big milestone for the Potomac River Tunnel Project! 🎉

DC Water's tunnel boring machine, Mary, is now fully assembled and ready to continue her journey underground. With the final gantry connected, Mary stretches an impressive 706 feet long and can now operate at full capacity. 🚇

These support systems help power the machine, remove excavated material, install tunnel lining, and keep crews safely working underground. Once completed, the Potomac River Tunnel system will reduce pollution entering the Potomac River by 93% and dramatically cut the number of stormwater and sewage overflow events. 🌊

This is another major step toward cleaner waterways for the District and the region.

Learn more about the project: https://www.dcwater.com/about-dc-water/media/news/now-fully-assembled-its-full-speed-ahead-tunnel-boring-machine-mary-and

08/27/2026

The back-to-school list is long enough. Your water bill shouldn’t make this season even harder.

If your household could use some breathing room, help may be available. Eligible customers could receive monthly discounts on their water and sewer bills, set up a flexible payment plan or receive up to $350 in emergency assistance when facing disconnection.

Let us help you explore your options. Visit dcwater.com/cares to learn more.

Today, Team Blue wears white. 🤍 Across DC Water, employees joined together in recognition of Women’s Equality Day, honor...
08/26/2026

Today, Team Blue wears white. 🤍

Across DC Water, employees joined together in recognition of Women’s Equality Day, honoring the generations of women who fought for the right to vote and helped move our country closer to equality.

Wearing white carries that history forward. Today, it serves as a visible show of unity while reminding us that progress is built by people willing to stand together and keep pushing forward.

Have questions about Lead Free DC? Tonight is your chance to ask them.Join our virtual meeting to learn more about lead ...
08/26/2026

Have questions about Lead Free DC? Tonight is your chance to ask them.

Join our virtual meeting to learn more about lead service line replacement and get your questions answered.

Wednesday, August 26 | 7–8 p.m.

We want to hear from you. 👇

Join on Microsoft Teams: https://bit.ly/LFDCAug2026

Call in: 202-753-6714, 18173584 #

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Washington D.C., DC

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+12027872000

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