Cascade County, MT septic permits and regulations

Septic systems in Cascade County, Montana are permitted by City-County Health Department (Great Falls) under ARM 17.36.9 (Circular DEQ-4).

Septic permit program

  • Program type: County Health Department
  • Authorized agent: Cascade County Health Department
  • Own septic program: No, uses Montana state rules
  • Local rules beyond the state: No
  • Population: 84,414

Permit fee comparison

Average septic permit fee in Cascade County: $154. Montana average: $206.

Local rules

County operates under state-level ARM 17.36.101 through 17.36.952. Contact local health department for any additional county-specific requirements.

What SepticPro has on file for Cascade County

  • 7 permit fees with sources
  • The agency phone, email and office address
  • Setback distances
  • Soil and perc test requirements
  • Allowed system types
  • System design rules
  • Inspection requirements
  • Maintenance and pumping rules
  • Point-of-sale rules
  • Installer, designer and pumper licensing

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Draw a permit-ready site plan for Cascade County

Enter the address, draw the system on the aerial with the parcel lines and topo, and print it to scale for City-County Health Department (Great Falls). See how SepticPro site plans work.

Other Montana counties

Data checked 2026-03-16. Always confirm requirements with City-County Health Department (Great Falls) before applying.