environment

Potomac River Sewage Spill Likely Largest in Nation's History

A sewage spill that began on Jan. 19 in the Potomac River has become one of the largest, if not the largest, reported wastewater spills in U.S. history.

Potomac River Sewage Spill Likely Largest in Nation's History

TL;DR

  • A sewage spill began on Jan. 19 in the Potomac River due to a collapsed section of the Potomac Interceptor sewer line.
  • The spill has released hundreds of millions of gallons of raw sewage, potentially making it the largest in U.S. history.
  • DC Water's priorities are containment, environmental monitoring, and stabilization, with repairs and an emergency bypass implemented.
  • Environmental activists are calling for greater transparency and accountability, highlighting the outdated nature of the wastewater infrastructure.
  • E. coli levels reported by DC Water were significantly higher than initially stated, raising further concerns.
  • Estimates of the spilled wastewater range from 243 million to 300 million gallons.
  • Drinking water has not been affected, and no overflow events have been reported in the 24 hours prior to a Wednesday update.