Data gathered about the bacteria levels in local river water have put several swimming and boating spots in the “safe” category on a national water safety registry. The Potomac RiverKeeper Network ...

The 18th annual Potomac River Watershed Cleanup will take place, rain or shine, from 9 a.m. to noon Saturday at sites throughout the region.

The U.S. Geological Survey measured water from the Washington Aqueduct, a federal agency that treats Potomac River water and sends it to the District, Arlington County and Falls Church. It found ...

DC's $819M Potomac River Tunnel breaks ground with dual TBMs DC Water breaks ground on a 5.5-mile tunnel under D.C. to capture sewage overflows, aiming to cut Potomac River pollution by 93% by 2030.

While sewers had overflowed up to 80 times a year into the Anacasotia River, which flows into the Potomac, the D.C. Water sewer project is set to prevent 98% of overflows.

D.C. could be in hot water if something ever disrupts the Potomac River’s drinking water supply, according to a new report from the Interstate Commission on the Potomac River Basin.

“We only have about 24 to 48 hours of water supply available should the Potomac River become unavailable to us,” said Tom Jacobus in 2016 while he was general manager of the Washington Aqueduct.