Licensed Well and Septic Contractors in Montana

Montana lists 252 licensed well and septic contractors: 109 well drillers and pump installers and 143 septic contractors. They are based in 42 counties and 57 cities. 7 license classes appear, covering pumping / cleaning, drilling / construction and monitoring wells.

Checked against Montana DEQ - Licensed Septic Pumpers and Montana DNRC Board of Water Well Contractors. Roster copy last refreshed 2026-08-19.

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Counties with the most listings based there

All 42 counties

Browse Montana by county

Each listing sits under the county of the address on its license record, which can be a mailing address. 42 counties have listings based there.

Cities with the most listings based there

Well Drillers by city in Montana

Well Drilling cost guide

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Looking for a specific contractor? Search by name, business name, or license number.

Hiring a well and septic professional in Montana

Before you sign anything: confirm the license on this page is still active with the agency that issued it, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.

How do I check a well and septic professional's license in Montana?

Use the license search to find the listing by name, business name, or license number, then confirm it with the agency that issued the license. Every listing links to the roster it came from.

What does well or septic work cost in Montana?

Our cost guides give national ranges for well drilling, well pump repair, septic tank pumping, septic cleaning, repairs, and inspections. Site conditions, access, and local demand set the real number, so get at least three written quotes from licensed well and septic pros in Montana.

Is a permit required?

Usually, for a new system or well and for most repairs, and the rules are set by the state or the county. Our Montana permit guide covers who issues them and what they cover.

Listings without a county

25 listings have no county we could place: the license record gives none, and its ZIP code or town doesn't settle one. Search by ZIP, or browse by the town on the record:

Permits and Montana agency resources

Do I need a permit for well or septic work in Montana? ›

• Montana DNRC - Board of Water Well Contractors

Where this Montana data comes from

• Montana DEQ - Licensed Septic Pumpers · source page
• Montana DNRC Board of Water Well Contractors · source page