Water Filtration in Montana
Water Filtration across Montana: the 26 ZIP codes and 23 cities we route calls in, and who licenses plumbers in the state.

Free to homeowners in Montana — the contractor pays us for the introduction, you never do.
What is in the water
Our water filtration coverage in Montana runs to 26 ZIP codes in 23 cities. A state of many small covered places is a state of many small water systems, and a system serving a few hundred connections can differ sharply from the one in the next town on hardness, iron and treatment.
Source: coverage area as published by our call partner; place and county names from the US Census Bureau.
We route water filtration calls in 26 ZIP codes across 23 Montana cities, in 4 counties.
What this site is
ClearTapCall is a referral service, not a contractor and not a laboratory. We connect homeowners with independent contractors for filtration and treatment installation. Contractors are required to hold whatever credential their state or municipality demands, and treatment equipment plumbed into a supply is often a permitted alteration — ask to see the permit. We carry out no work, we sell no equipment, we test no water, we do not set prices, and we never charge homeowners anything. Nothing here is a statement about the water at any address, and no page recommends a product.Checking a credential in Montana
Montana licenses are issued by the Montana Board of Plumbers, which publishes a public search you can use before work begins.
Every Montana county we cover
- Big Horn County 4 ZIP codes
Fort Smith, Hardin, Pompeys Pillar, Pryor - Carbon County 5 ZIP codes
Bridger, Edgar, Fromberg, Joliet, Roberts - Stillwater County 5 ZIP codes
Absarokee, Columbus, Molt, Park City, Reed Point - Yellowstone County 12 ZIP codes
Billings, Acton, Ballantine, Broadview, Custer, Huntley, Laurel, Shepherd and 1 more
What that coverage looks like
Yellowstone County holds 12 of the 26 ZIP codes we cover in Montana, and Billings 4 of those. A supply that large is usually one system with one published quality report; the remaining 3 counties contain many smaller systems, each with a report of its own.
How a water filtration job goes
Filtration is chosen from a test result, not from a taste. Hardness, iron, sediment and chlorine each call for different equipment, and a cartridge sized for one does nothing for the others. The order is always the same: find out what is in the water, then decide what has to come out of it, then size the equipment for how much water the house actually uses.
What the call asks about water filtration
- Whether the supply is a public system or a private well, because the testing route is different.
- What the water is actually doing — staining, scale, smell, taste, cloudiness.
- Whether there is a test result already, from the annual report or from a lab.
Every Montana city we route in
2 cities, ordered by the share of housing built since 2000. Plumbing age decides what the water picks up between the main and the tap. Each page carries that city’s own numbers and the ZIP codes we route there.
Before you call
Filtration starts with knowing what is actually in the supply. The pages above set out which test result points at which kind of equipment.

