Hardin County, IL septic permits and regulations

Septic systems in Hardin County, Illinois are permitted by Southern Seven Health Department (Hardin County office) under 77 Ill. Admin. Code Part 905.

Septic permit program

  • Program type: County Health Department
  • Authorized agent: Hardin County County Health Department
  • Own septic program: No, uses Illinois state rules
  • Local rules beyond the state: No
  • Population: 3,649

Permit fee comparison

Average septic permit fee in Hardin County: $187. Illinois average: $183.

Local rules

County operates under state-level 77 Ill. Admin. Code Part 905 (Private Sewage Disposal Code). Contact local health department for any additional county-specific requirements.

What SepticPro has on file for Hardin 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

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Draw a permit-ready site plan for Hardin County

Enter the address, draw the system on the aerial with the parcel lines and topo, and print it to scale for Southern Seven Health Department (Hardin County office). See how SepticPro site plans work.

Other Illinois counties

Data checked 2026-03-16. Always confirm requirements with Southern Seven Health Department (Hardin County office) before applying.