Stephenson County, IL septic permits and regulations

Septic systems in Stephenson County, Illinois are permitted by Stephenson County Health Department under 77 Ill. Admin. Code Part 905.

Septic permit program

  • Program type: County Health Department
  • Authorized agent: Stephenson County County Health Department
  • Own septic program: No, uses Illinois state rules
  • Local rules beyond the state: No
  • Population: 44,630

Permit fee comparison

Average septic permit fee in Stephenson County: $175. 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 Stephenson 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 Stephenson County

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

Other Illinois counties

Data checked 2026-03-16. Always confirm requirements with Stephenson County Health Department before applying.