Isabella County, MI septic permits and regulations

Septic systems in Isabella County, Michigan are permitted by Central Michigan District Health Department under Michigan Criteria for Subsurface Sewage Disposal (R 325.1651 et seq.).

Septic permit program

  • Program type: County Health Department
  • Authorized agent: Isabella County Health Department
  • Own septic program: No, uses Michigan state rules
  • Local rules beyond the state: Yes
  • Population: 64,394

Permit fee comparison

Average septic permit fee in Isabella County: $325. Michigan average: $335.

Local rules

County operates under state-level MCL 333.12751-12771 (Part 127). Contact local health department for any additional county-specific requirements.

What SepticPro has on file for Isabella County

  • 3 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 Isabella County

Enter the address, draw the system on the aerial with the parcel lines and topo, and print it to scale for Central Michigan District Health Department. See how SepticPro site plans work.

Other Michigan counties

Data checked 2026-03-16. Always confirm requirements with Central Michigan District Health Department before applying.