EPA Takes Over Water Quality Sampling Following Potomac Interceptor Collapse in Washington, D.C.
The U.S. Environmental Protection Agency (EPA) will take over water quality sampling in response to the January 19, 2026, collapse of the Potomac Interceptor in Washington, D.C., which led to untreated sewage entering the Potomac River.
Daily sampling will be conducted at the same sites previously used by the DC Department of Energy and Environment, with results published three days post-sampling. In Hawaii, Kiewit and the Department of Public Works are rehabilitating a sewage pump station along Papaloa Road in Kapaʻa from March 16 to March 23, 2026, causing lane closures. Concurrently, the Hanalei Water Line Improvements Project is probing underground pipes on various roads from March 17 to March 20, 2026, necessitating intermittent lane closures.
