Linn County, OR septic permits and regulations

Septic systems in Linn County, Oregon are permitted by Linn County Environmental Health under OAR 340-071.

Septic permit program

  • Program type: Mixed
  • Authorized agent: Linn County Health Department
  • Own septic program: No, uses Oregon state rules
  • Local rules beyond the state: No
  • Population: 128,610

Permit fee comparison

Average septic permit fee in Linn County: $621. Oregon average: $621.

Local rules

County operates under state-level OAR 340-071 (Onsite Sewage Disposal). Contact local health department for any additional county-specific requirements.

What SepticPro has on file for Linn County

  • 49 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 Linn County

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

Other Oregon counties

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