EMERGENCY WATER MAIN REPAIR
Feb 08, 2026 | 05:30 AM

EMERGENCY WATER MAIN REPAIR
Feb 08, 2026 | 04:30 AM

EMERGENCY WATER MAIN REPAIR
Feb 08, 2026 | 04:00 AM

District of Columbia Residents: Here's What's in Your Tap Water

June 23, 2010

The District of Columbia Water and Sewer Authority (DC Water) has released its 2009 Annual Drinking Water Quality Report, the most comprehensive drinking water resource delivered to District residents each year. The report provides valuable information about the water flowing from the Potomac River to taps throughout the District. 

"Water is essential to everyday life, and we are committed to delivering high-quality drinking water that is protective of the public's health," said DC Water General Manager George S. Hawkins. "Accurate information empowers people to make important decisions about their tap water. It’s our goal to make sure everyone in the District knows they can be confident in, and proud of, their water supply."

Drinking water quality in the District has met all federal regulatory standards for the past five years, except for a turbidity violation on a single day in 2008. The Drinking Water Quality Report provides information on water quality monitoring, regulated contaminants and how our drinking water compares to federal standards. DC Water conducts more than 30,000 water quality tests each year. 

DC Water is investing its resources in transparent and reliable information about the drinking water it delivers and how water quality can vary among homes. In addition to mandatory monitoring, DC Water conducts voluntary sampling in schools, daycares and customer homes and works closely with residents to address household water issues, such as lead and aging pipes. 

Ensuring high-quality water from the Potomac River to District households and other buildings is a shared responsibility among DC Water, residents, and the Washington Aqueduct (the federal agency responsible for treating the drinking water). DC Water encourages residents to learn about District drinking water and how household plumbing can affect their water. Annual reports, monthly water quality testing results and tips on ensuring water quality are available on the DC Water website at www.dcwater.com. 

For more detailed information, visit http://www.dcwater.com/drinking_water or contact the Water Quality Division at (202) 612-3440.

Latest News

Trench boxes at construction site for new pit accessing Potomac Interceptor Upstream

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DC Water is releasing new findings regarding the environmental impacts following the January 19, collapse in a section of the Potomac Interceptor. Based on flow monitoring data collected before and after interim bypass pumping was activated, DC Water estimates approximately 243 million gallons of wastewater has overflowed from the collapse site.

Image of rock blockage taken by CCTV inside the Potomac Interceptor downstream of the collapse

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Overnight CCTV inspection of the Potomac Interceptor revealed the blockage inside the collapsed sewer line is far more significant, showing a large rock dam stretching approximately 30 feet downstream of the original failure.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Picture of new bike pedestrian path and traffic detour
New Path for Capital Crescent Trail Opens at Georgetown Waterfront Park

DC CLEAN RIVERS – POTOMAC RIVER TUNNEL PROJECT
If you bike, drive, or walk through Georgetown, we’ve got changes starting this week around the Potomac River Tunnel construction on Water Street NW. The Capital Crescent Trail has a new temporary detour through Georgetown Waterfront Park, open now for cyclists between 33rd and Potomac streets NW.

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
February 19, 2026
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.