health
February 14, 2026
Potomac River sewage pipe repair expected to take over nine months
Authorities from Washington, D.C.‘s Water and Sewer Authority expect the full repair of the sewage pipe that ruptured near Cabin John, Maryland, to take over nine months.
TL;DR
- A sewage pipe rupture near Cabin John, Maryland, has resulted in 243 million gallons of raw sewage overflowing into the Potomac River.
- This incident is likely the largest reported wastewater spill in U.S. history.
- DC Water expects the full repair process to take over nine months, with completion estimated for November or December of 2026.
- Initial repair stages included installing a bypass pump and cleaning the blockage.
- Current phases involve constructing a bulkhead and bypass chamber, followed by permanent repairs using sliplining.
- E. coli levels detected near the overflow point are significantly higher than safe levels for swimming.
- Drinking water supplies are not impacted by the spill.
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