Montana DEQ (MT)
Montana's environmental agency: subdivision and septic review, water quality, air quality and mine reclamation.
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What you can look up here
- Environmental conditionsContamination, tanks, spills, and permitted facilities near a site.
- Septic systemsPermits, inspections, and records for septic systems.
- Lakes and waterLake depth maps, water quality, public access, and public waters status.
About this resource
- Provided by
- Montana Department of Environmental Quality (official)
- Covers
- Montana statewide
- Link status
- Opened normally at the last check
- Link checked
- Oct 14, 2026
- Web address
- https://deq.mt.gov/
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