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Sewer Rates
The LFP sewer rate is made up of two parts: the LFP Residential Sewer Rate, which is used for the maintenance and repair of the LFP sewer system, and the King County Sewer Treatment charge, which goes to King County for operation and maintenance of their sewage treatment facilities.
2026 Sewer Rate
Starting January 1, 2025 the King County portion of your bill will increase from $58.27 to $62.66 per month. The City portion will increase from $22.46 to $23.58 per month. In addition, a 10% service tax is charged each billing on the monthly sewer charges.
Your bi-monthly sewer bill increased from $177.63 to $189.73 ($94.87 per month). The Wastewater Excise Tax bill will change to $51.88. You will see this change in your January/February bill.
| 2026 Bi-Monthly Sewer Rates | Rate |
|---|---|
| LFP Bi-Monthly Residential Sewer | $ 47.16 |
| King County Bi-Monthly Sewage Treatment Charge | $125.32 |
| Utility Tax (10%) - LFP Sewer | $ 4.72 |
| Utility Tax (10%) - King County Treatment | $ 12.53 |
| Total | $189.73 |
The "LFP Residential Sewer Rate" is set by the Lake Forest Park City Council and may change annually.
The "King County Sewage Treatment Charge" is set by King County Council. If you have questions regarding this charge, visit King County Wastewater Treatment.