Spokane County commissioners voted unanimously Dec. 16 to amend Spokane County Code (chapter cited in the public hearing) to raise the wastewater treatment plant charge by $0.25 per month.

Louis Graff, the county’s wastewater system administrator, said the 25‑cent increase equates to just under a 0.5% rise for a typical single‑family residence and would bring a typical residence’s monthly sewer bill to $50.41. He said the adjustment is based on the single‑family residence unit and that rates for duplexes, multifamily units and reduced‑residence classifications are prorated accordingly.

Graff told the board the Wastewater Policy Advisory Board reviewed and approved the update in October before the item came to the commission. There was no public testimony on the item; a commissioner moved the amendment and the board adopted it unanimously.

The change is the board’s annual fee update and, according to staff, reflects system revenue and account reconciliation work. No specific dollar revenue estimate or effective date beyond the board action was provided during the hearing.