City of MI lifts wastewater restrictions for affected properties

Published 9:30 am Wednesday, February 25, 2026

According to the city of Mercer Island at 8:15 p.m. on Feb. 24, crews successfully cleared the blockage in the underwater sewer lakeline, the “Cease Wastewater Discharge” advisory is now lifted for all affected properties and Pump Station 10 is back up and running.

“Residents may now resume normal usage of showers, toilets, dishwashers and washing machines,” the city said, adding that Public Health – Seattle & King County has issued an advisory that people avoid contact with Lake Washington in the impacted area. That advisory will remain in effect for the next week as a standard safety precaution.

More story to come.