Oct 13, 2026Board meeting
Mercer Island Utility Board Meeting
The board discussed water and sewer rate recommendations. Key topics included a proposed 8% water rate increase driven by capital investments in a new water supply line and other infrastructure projects, and a sewer rate increase influenced by King County treatment costs. The board approved the recommended 8% water rate increase and began discussions on the sewer utility's rate structure, noting the pass-through nature of county treatment costs.