Working for a safe, affordable, vibrant, innovative, and interconnected city.
Learn More
Seattle.gov Home Page
Seattle.gov This Department

About the Water System

Seattle Public Utilities supplies water to approximately 1.5 million people in the Seattle area. The two watersheds that supply our water are publicly owned, and one is managed under a detailed Habitat Conservation Plan.

WATER SUPPLY

Current water supply conditions and outlook, current water supply graphs. See Water Supply.

WATER SYSTEM OVERVIEW

Learn how the water makes its way from the watershed to your tap. See Water System Overview.

DAM SAFETY

SPU is dedicated to ensuring that all dams are designed, constructed, operated, and maintained with your utmost safety in mind. Find information about dam monitoring and emergency action plans. Learn how you can be prepared. See Dam Safety.

REPORTS

Various reports on water usage, water conservation, and reclaimed water. See Water Reports.

PLANNING

Water System Plan, Water Shortage Contingency Plan and other water supply planning documents. See Drinking Water Planning.

Moncton

Go back in history to the drowned town of Moncton in the year 1915. View slideshow.

Moncton

The City of Seattle’s Cedar River Watershed is carefully managed to support and supply clean drinking water to 1.4 million people in the greater Seattle area. View slideshow.