Carbon County, MT septic permits and regulations

Septic systems in Carbon County, Montana are permitted by Carbon County Environmental Health under ARM 17.36.9 (Circular DEQ-4).

Septic permit program

  • Program type: County Health Department
  • Authorized agent: Carbon County Health Department
  • Own septic program: No, uses Montana state rules
  • Local rules beyond the state: No
  • Population: 10,473

Permit fee comparison

Average septic permit fee in Carbon County: $153. 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 Carbon County

  • 13 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

Create a free account to see the full details.

Draw a permit-ready site plan for Carbon County

Enter the address, draw the system on the aerial with the parcel lines and topo, and print it to scale for Carbon County Environmental Health. See how SepticPro site plans work.

Other Montana counties

Data checked 2026-03-16. Always confirm requirements with Carbon County Environmental Health before applying.