The 2004 Water Quality Report is Now Available

June 23, 2005

The Water Quality Annual Report summarizes information about the District of Columbia’s drinking water. The information is broad, covering the source water supply, contaminants detected in the source water and treated water, compliance with drinking water regulations, as well as WASA’s latest operation improvement programs. Click on the links below to view the 2004 Water Quality Report, the Supplemental Monitoring Report, and Perchlorate Monitoring Information.

Latest News

View of Independence Ave SW

(Washington, DC) –DC Water’s contractor on the Potomac River Tunnel Project will continue potholing operations along Independence Avenue, SW between Ohio Drive and West Basin Drive on or about April ...

Photo of CEO David Gadis and Chief Communications and Stakeholder Engagement Officer Kirsten Williams addressing the audience at a town hall meeting.

Authority Offers Virtual and In-Person Options

Photo shows an adult washing a glass in the sink with the faucet running.

The U.S. Army Corps of Engineers’ Washington Aqueduct, which supplies water to DC Water, annually performs a temporary disinfectant switch from chloramine to chlorine. This year, the switch runs from March 25 to May 6. During that time, customers may notice temporary minor changes in taste and odor.

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April 24, 2023

Monday 9:00 AM

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Leveraging Green Infrastructure for the Triple Bottom Line
Leveraging Green Infrastructure for the Triple Bottom Line
Leveraging Green Infrastructure for the Triple Bottom Line
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April 23, 2024
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