Montana septic and subdivision review (MT)
Montana septic permits are issued by your county or city-county health department, with state DEQ review for subdivisions. Start here for the state rules, then contact the county sanitarian.
Montana septic and subdivision review
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What you can look up here
- Septic systemsPermits, inspections, and records for septic systems.
About this resource
- Provided by
- Montana DEQ Engineering Bureau (official)
- Covers
- Montana statewide
- Link status
- Opened normally at the last check
- Link checked
- Oct 19, 2026
- Web address
- https://deq.mt.gov/water/Programs/eng
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