WSSC Potomac filtration plant power outage restricts Maryland water use
WSSC · Maryland, United States
Summary
A power failure at WSSC Water’s Potomac Water Filtration Plant on Sept. 29, 2026, interrupted production and prompted an essential-water-use-only request for customers in Montgomery and Prince George’s counties, Maryland. Water remained safe to drink. WSSC lifted the restriction Sept. 30 after production met demand and the distribution system returned to normal; the plant continued using a temporary internal electrical configuration while a permanent repair was planned.
Key facts
- Added to watchlist
- Sep 30, 2026
- Incident start
- Sep 29, 2026
- Left watchlist
- Sep 30, 2026
- Primary subject
- WSSC
- Primary location
- Maryland, United States
Watchlist history
- Added to watchlist
- Left watchlist
ruled out