Custer County, MT septic permits and regulations
Septic systems in Custer County, Montana are permitted by Custer County Environmental Health under ARM 17.36.9 (Circular DEQ-4).
Septic permit program
- Program type: County Health Department
- Authorized agent: Custer County Health Department
- Own septic program: No, uses Montana state rules
- Local rules beyond the state: No
- Population: 11,867
Permit fee comparison
Average septic permit fee in Custer County: $211. 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 Custer 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
Create a free account to see the full details.
Draw a permit-ready site plan for Custer County
Enter the address, draw the system on the aerial with the parcel lines and topo, and print it to scale for Custer County Environmental Health. See how SepticPro site plans work.
Other Montana counties
- Beaverhead County
- Big Horn County
- Blaine County
- Broadwater County
- Carbon County
- Carter County
- Cascade County
- Chouteau County
- Daniels County
- Dawson County
- Deer Lodge County
- Fallon County
- Fergus County
- Flathead County
- Gallatin County
- Garfield County
- Glacier County
- Golden Valley County
- Granite County
- Hill County
- Jefferson County
- Judith Basin County
- Lake County
- Lewis and Clark County
Data checked 2026-03-16. Always confirm requirements with Custer County Environmental Health before applying.