A six-foot section of the Potomac Interceptor sewer pipe collapsed on Jan. 19 along the Clara Barton Parkway in Montgomery County, Maryland, releasing an estimated 240-243 million gallons of raw sewage into the Potomac River. The pipe, owned and operated by DC Water (a utility), carries up to 60 million gallons of wastewater daily from Virginia and Maryland to a treatment plant in Washington, D.C. Most of the overflow (roughly 194 million gallons) occurred in the first five days before crews diverted much of the flow into the C&O Canal. University of Maryland researchers detected elevated levels of fecal bacteria and pathogens in the river. Local officials say drinking water is safe and unaffected.
On Feb. 16, President Trump announced via social media that federal authorities, including FEMA, would coordinate the cleanup response. He criticized Maryland Gov. Wes Moore and local Democratic officials for "gross mismanagement." Gov. Moore's spokesperson responded that the federal government has been responsible for the Potomac Interceptor since the last century and accused the Trump administration of failing to act for four weeks, noting the EPA did not participate in a Feb. 14 legislative hearing. DC Water had allocated $625 million for rehabilitation of the Potomac Interceptor before the collapse. Repairs are expected to take approximately nine months.