Lead Service Line Flushing Clarification

February 19, 2004

The District of Columbia Water and Sewer Authority has urged District residents whose homes have lead service lines to flush their taps for 10 minutes to protect against high levels of lead in drinking water. Officials with the Environmental Protection Agency (EPA) have agreed that the longer flushing time will ensure that water left in lead service lines overnight or for long periods is drained off before customers collect water for drinking or cooking.

WASA had previously distributed brochures and stated publicly that residents should flush their taps for about one or two minutes, a guideline based on long-standing EPA recommendations. The original guidelines were actually issued several times, including September 2003. The safety of the District’s water supply is WASA’s top priority and we are working diligently to understand why there has been an increase in lead levels in tap water in some homes. We are committed to discovering the cause of elevated lead levels, identifying solutions, and fixing the problem.

Latest News

Workers manually removing soil between the locks

Work is progressing on the clean-up for the C & O Canal which was used as a bypass while the Potomac Interceptor was repaired. Workers are focused on removing sludge between locks 11 and 12. Soil removal is also nearly complete between locks 12 and 14, reaching the canal's clay liner. Workers are now manually removing additional materials in some areas.

Excavators in the canal digging up soil and another excavator removing the soil to a dump truck to be hauled away

DC Water and its contractor have made significant progress on soil removal, reaching the clay liner between locks 13 and 14 of the C & O Canal, which was used as a bypass for wastewater during the Potomac Interceptor repairs.

Work continues to remove sludge between locks 10 and 13, which is expected to be completed by mid- to late-April. The soil will then be removed down to the clay liner as the final step, and the canal reconstructed to meet National Park Service specifications.

Soil Removal Underway with Excavator in Canal

Today, DC Water and its contractors began removing contaminated soil between locks 13 and 14 in the C & O Canal, which was used as a temporary bypass during the Potomac Interceptor repair effort. Clean-up efforts are ongoing at Lock 10 with work to remove sludge now getting underway between locks 11 and 13.

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
April 10, 2026
Friday, 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.