Seattle Public Utilities

2019 Water System Plan

Seattle Public Utilities provides reliable, high-quality drinking water to 1.4 million people who live in Seattle, King County and portions of southern Snohomish County. Thoughtful planning and strategic investment in our drinking water supplies and infrastructure will help ensure our region has enough water to meet the needs of our customers for decades.

To plan for long-term needs and meet regulatory requirements, Seattle Public Utilities regularly updates its Water System Plan. The 2019 Water System Plan is the latest update. It describes near- and long-term plans for the regional water system. It also focuses on updates to the water system and programs since the 2013 Water System Plan was completed.

The Plan describes how Seattle Public Utilities:

  • meets current and future water demands,
  • ensures high-quality drinking water,
  • enhances system reliability and resiliency, and
  • cost-effectively invests in and maintains the water system.

Plan Review and Adoption

On March 12, 2018, SPU released the Public Review Draft of the 2019 Water System Plan for public review and comment through June 1, 2018. Based on the comments received, a final plan has been prepared for review by Mayor Jenny Durkan and the Seattle City Council. Following adoption by the City Council, tentatively scheduled to occur before the end of 2018, the Water System Plan will be reviewed for approval by King County and the Washington Department of Health in 2019.

View the Water System Plan

Contact Information

Joan Kersnar
Drinking Water Planning Manager
(206) 684-0839

Archived Plans

2013

2007

This page was last updated on 3/12/2018.