Water heaters and water softeners in Twin Falls County, Idaho
From Twin Falls and Kimberly to Filer, Buhl and Hansen, homes across Twin Falls County deal with some of the hardest water in the Magic Valley. We handle water heater replacements, new installations and upgrades, and water softeners for homes, new builds and shops throughout the county.
Good to know in Twin Falls County
Towns we serve in Twin Falls County include Twin Falls, Kimberly, Filer, Buhl, Hansen, Murtaugh, Castleford, Hollister.
Very hard water
Published figures for the City of Twin Falls range from about 16 to 23 grains per gallon (roughly 270 to 400 mg/L), and Filer's system reports about 20 grains per gallon. Anything above about 10.5 grains per gallon is classed as very hard by the U.S. Geological Survey.
Where city water comes from
The City of Twin Falls supplies drinking water from eight groundwater wells. Groundwater picks up calcium and magnesium from the rock it moves through, which is where the hardness comes from.
Hard water and water heaters
At these hardness levels, scale builds up quickly in tank and tankless water heaters. A softener protects a new water heater, and popping or rumbling from an older tank is often a sign of mineral build-up.
Permits
In Idaho, plumbing work, including installing a water heater, needs a permit. Depending on your address it comes from your city or from the state Division of Occupational and Professional Licenses. We check which applies to your home when we quote.
Information last checked 2026-11-13.
Services in Twin Falls County
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