DC Water breaks ground on a 5.5-mile tunnel under D.C. to capture sewage overflows, aiming to cut Potomac River pollution by ...

With the help of laser imaging and a water-current detecting buoy, specialists from the National Oceanic and Atmospheric ...

According to the Potomac Conservancy Report Card, the primary source of pollution in the Potomac River is urban runoff, which is one of the leading causes of pollution in the United States.

Before Congress passed the Clean Water Act in 1972, U.S. factories and cities could pipe their pollution directly into ...