What & Why

The Broadview neighborhood has had a history of observed sewer and drainage problems. During heavy rains, water can overwhelm Broadview’s sewer system and cause sewage backups into homes, which is a public health issue. Stormwater runoff can also flow from streets onto private property and cause damage. Broadview’s high groundwater table, poor draining soils, steep bluff to the west, lack of formal drainage system, and aging sewer pipes all contribute to the complexity of these issues.

What’s happening now?

From 2011 to 2016, SPU evaluated potential options to reduce sewage backups and stormwater runoff in Broadview. After extensive evaluation and review that included hearing from the community, SPU selected two projects to address the highest priority sewer and drainage issues.

The 12th Ave NW Drainage Basin Project is currently in the design phase. This project will help reduce flooding and includes both new pipe network and natural drainage systems in the contributing area. We are currently working with the community to site natural drainage systems in the neighborhood.

The Dayton Avenue North Sewer Improvement Project was placed on hold in October 2018. In the 2019-2020 budget proposal, all City departments were required by the mayor’s office to reduce budgets by 5% while striving to maintain current service levels. SPU analyzed all of its projects citywide and reprioritized them based on highest need, efficiency improvements, operating budgets and the obligation to deliver on our regulatory requirements. As a result of this reprioritization effort, the Dayton Avenue North Sewer Improvement project is not included in the current budget and has been postponed for at least two years. Comprehensive utility planning will inform when future work in the Dayton basin occurs..

Next steps

SPU will evaluate results of the 12th Avenue NW Drainage Basin project and will continue to monitor the Dayton basin. Should residents in the Dayton basin experience wastewater backups or drainage issues, they are strongly encouraged to report them to our Operations Response Center by calling 206-386-1800.

This data will support thoughtful and cost-effective design of future improvements, if needed. SPU will provide information on projects and progress through regular updates to our website, email listserv, and briefings for community groups and councils.

Project goals and benefits

The goals of the Broadview program are to:

  1. Reduce sanitary sewer overflows into homes, streets, and creeks
  2. Reduce the frequency and quantity of stormwater flooding to areas most impacted, especially building structures.