Sycamore Sewer

Sewer Manhole Cover


In November 2018, the City of Issaquah started its recent assessment of possibly extending public sewer to Sycamore.

Our outreach has included letters, an open house, and individual meetings with Sycamore property owners currently not connected to sewer.

During these individual meetings, we heard from some who need sewer connections, as well as others who have concerns about a variety of impacts (from cost to future development) if sewer was extended.

No construction is planned in near term that would extend sewer in Sycamore. However, the City Council will continue discussing this topic.

Frequently Asked Questions

 Why is this topic coming up again, and why now?

  • The City recently received requests from some Sycamore property owners to revisit this issue.
  • Many of the on-site septic systems are 40+ years old. The typical useful span is about 20 years.
  • The City must ensure we are protecting the environment.

I have already spent thousands of dollars to rebuild my septic system. Now, I'm concerned I would have to pay for a sewer extension. What are my options?

  • These are valid concerns. We plan to further research funding alternatives (other than a LID) that could extend sewer, while allowing property owners with functioning septic to avoid connecting until their system fails.

Why is septic a concern for some property owners?

  • Some property owners have aging septic systems, and limited ability to either repair or replace them due to space issues. If it's not possible to repair or replace a failing septic system, residents would be required to move out until the issue could be addressed.

Has there been any recent water quality testing in the area?

  • In October 2018, the City sampled six locations (see details (PDF)) along Issaquah Creek that are near or in Sycamore. All samples contained human and animal fecal coliforms. The City will continue to monitor water quality, as these results can vary due to multiple factors, including stormwater patterns, time of year, etc.

What decision can be made among our neighbors?

  • Funding a sewer system via a LID would be a decision among your neighbors. After hearing from some property owners about their urgent septic situations, however, the City is further researching other funding alternatives.

Is there a conflict of interest with any City staff or the Mayor in this process?

  • No. Neither staff nor the Mayor are the decision makers. The City Council is the ultimate decision maker on whether to pursue a sewer extension.

Stay Connected

To stay connected on this project, subscribe to the Sycamore category in the City's Notify Me tool.