CITY OF BAINBRIDGE ISLAND
ANNUAL WATER MAIN 

FLUSHING NOTICE

City of Bainbridge Island utility crews will begin annual flushing of city water mains in the Winslow and Fletcher Bay areas on Monday, March 9, 2026.

Signs will be posted in neighborhoods prior to flushing. 

If customers experience low water pressure or discolored water during the work, they are advised to avoid running water or doing laundry for one hour. 

After one hour has passed, customers should run cold water for approximately five minutes until it's clear.

The City anticipates the annual flushing process to be completed within approximately two months.

Annual water system flushing is performed at the beginning of each year to remove trace minerals, mostly iron and manganese from the water mains. Although iron and manganese do not pose health concerns, they can create aesthetic issues affecting the taste, clarity, and color of the water. This sediment is removed, and water quality maintained by unidirectional flushing of the water mains on an annual basis. Unidirectional water main flushing involves valving off each section of water main and then directing water at high flow rates through fire hydrants.