Notification of Temporary Water Supply Change in Northwest DC

November 18, 2014

The District of Columbia Water and Sewer Authority (DC Water) advises customers that live in parts of NW Washington, DC that their drinking water will temporarily be supplied by the Washington Suburban Sanitary Commission (WSSC) this Thursday, November 20, starting at 9 p.m. The impact area is shown on the attached map, which can be found at the following link: http://bit.ly/1xejulz. The temporary switch in water supply will last approximately 6 to 8 hours while DC Water makes a repair to the pump station that serves this area. Customers may notice a chlorine odor or taste in the water due to WSSC’s use of chlorine disinfection and the mixing of DC Water and WSSC water supplies. The stronger chlorine taste and smell should subside by Sunday, November 23. If the odor and taste persists after Sunday, DC Water recommends that customers call the Drinking Water Division at 202-612-3440. DC Water also advises customers that water pressure should remain constant, although a small increase is possible due to the temporary supply change.

Individuals and business owners who take special precautions to remove chloramine from tap water, such as dialysis centers, medical facilities and aquatic pet owners, should continue to take the same precautions during the temporary switch. Most methods for removing chloramine from tap water are effective in removing chlorine. Individuals with special health concerns should consult a health care provider on the use of tap water. Please share this information with everyone who drinks this water, especially those who may not receive this notice directly (for example, people in apartments, nursing homes, schools, and businesses).

For more information and updates, visit www.dcwater.com or contact DC Water Customer Service at 202-354-3600 or the 24-Hour Command Center at 202-612-3400.

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View of Mary at bottom of shaft inside tunnel shown from above

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Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

View of Mary at bottom of shaft inside tunnel shown from above
DC Water Launches Tunnel Boring Machine Mary, Marking Important Step for Potomac River Tunnel Project

First turn of cutterhead signals the start of excavation for the Potomac River Tunnel Project

In a defining moment for one of the District’s largest infrastructure investments, DC Water has marked its next major milestone in the Potomac River Tunnel Project. The first tunnel boring machine, Mary, has launched her northbound journey breaking through the soil to signal the start of excavation.

With the first turn of Mary’s drill-like cutterhead underground, the machine pushed forward to begin tunneling, representing the transition from years of planning and preparation to active tunnel construction on the $819 million project.

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April 15, 2026
Wednesday, 9:30 AM

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.