The City’s sewer rate has two components: King County’s and the City’s portions. King County assesses a fee for the cost of sewage disposal, including the operation of sewage treatment plants and the maintenance of the facilities. This is the larger portion of the bill and is a true pass-through to King County, which will increase by 7.5% ($4.38/month) in 2026.
The City’s portion funds the maintenance and repair of Lake Forest Park’s local sewer system. To keep pace with inflation and rising costs, this portion will increase by 5% ($1.12 per month) in 2026. Along with the 10% service tax applied to each billing, the average residential bi-monthly sewer bill will increase from $177.63 to $189.73 every two months starting January 1, 2026. You will see the new rate reflected on the February 1 billing.
The City of Lake Forest Park also offers a Low-Income Sewer Discount Program for residents within the City’s service area. Eligible ratepayers receive a 50% reduction on their bi-monthly sewer bills and are required to apply annually to maintain the Low-Income Sewer discount. If you are currently receiving a discounted bill, watch your mailbox in the coming months for the renewal letter and application. Learn more on our website.