Mountlake Terrace City Council Work Session - September 10, 2026

The Mountlake Terrace City Council work session on September 10, 2026, focused primarily on the 2027–2032 water, sewer, and stormwater rate study. Staff presented three annual rate-increase scenarios—3%, 6%, and 9%—and described the related operating costs and capital work. Current annual revenues were reported as approximately $8.2 million for water, $8.8 million for sewer, and $5 million for stormwater. Projects discussed included aging pipe replacements, water-tank seismic work, emergency interties, I-5 water-main crossings estimated at about $15 million each, and expanded sewer and stormwater pipe inspections. The inspection work could be undertaken through a contract; a possible $12–15 million Edmonds treatment-plant upgrade related to nutrient regulations was not included in the scenarios. Staff discussed a recommendation of 6% increases for water and sewer and 3% for stormwater, but the council made no rate decision. Members requested clearer financial scenario backup and further analysis of rate structures, affordability, discount programs, and monthly billing. Staff also said a new shared treatment-plant contract would return to council for review and approval later in the year.