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Columbia Falls engineers find water source and some mains near capacity; additional well and storage recommended
Summary
Consultants reported Columbia Falls' water system meets minimum storage but is slightly undersized for maximum-day demand, with a transmission main and several hydrants failing fire-flow goals; consultants recommended evaluating an additional well, redundant storage, and targeted main upgrades.
City staff and consulting engineers presented a preliminary engineering report (PER) update for Columbia Falls' water system, saying the existing supply and some distribution components are close to their operational limits and will need upgrades or additions as growth proceeds.
Consultants from WGM said Columbia Falls currently uses three municipal wells, about 2,050,000 gallons of storage in a single ground-level concrete tank, roughly 44 miles of mains, and about 2,292 service connections. Using seven years of meter and production data, the team said average daily demand is about 1,400,000 gallons, maximum-day demand about 3,490,000 gallons, and peak-hour equivalent flows near 6,980,000 gallons per day. "With the maximum well out of service, the existing wells would be able to produce 3,020,000…
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