Flathead Valley well FAQ
Straight answers on drilling, pumps, DNRC filings, testing, and inspections. Still stuck? Call (406) 407-9468.
Who can drill a water well in Montana?
A Board of Water Well Contractors (BWWC) licensed water well contractor must supervise construction. Verify the license on Montana DNRC / BWWC lists before work starts.
What's an exempt well in Montana?
An exempt groundwater appropriation is generally limited to 35 gallons per minute or less and 10 acre-feet per year or less (§ 85-2-306, MCA). Starting January 1, 2026, file DNRC Form 602I before putting that water to use (it may be filed before or after drilling). After completion and beneficial use, file Form 602 by the Notice of Intent deadline. Authorization of Form 602I isn't itself a water right.
How deep are wells in Flathead County?
Independent summaries of Flathead County MBMG GWIC records often place median completed depth near 190–195 feet and median tested yield near 25 gpm. Your parcel can differ. Neighboring GWIC logs matter more than any countywide median.
Should septic be approved before drilling?
Flathead Environmental Health setbacks between wells and septic systems apply. County guidance often favors resolving septic layout before spotting a new well so the well head lands legally.
What does a new domestic well typically cost in Montana?
Contractor and industry guides publish wide typical cost bands for Montana domestic wells. We don't quote a fixed price here. Depth, access, casing, grouting, and the pump package change the number. Ask a BWWC-licensed contractor for an itemized estimate.
Why is my well pump short-cycling?
A waterlogged pressure tank, a failing pressure switch, or a leak on the house side are common causes. Diagnosis usually starts above ground before pulling the submersible.
What should I test private well water for?
Flathead homeowners commonly test bacteria (coliform / E. coli), nitrates, and arsenic through a certified lab, especially after a new well, a pump change, flooding, or before a sale.
Is a well inspection required to sell a Montana home?
No statewide law requires a well inspection at every sale. Lenders, buyers, or the purchase contract may still require evaluation and water tests.
Can you drill in winter?
Frozen ground, snow, and icy drives can delay or block a rig. Plan ahead; don't assume a mid-winter mobilization.
Do you have a street address?
No. Well Drilling Kalispell is a service-area business with no public walk-in address. Call or use the request form; technicians meet you at the property.