Clatsop County, OR septic permits and regulations

Septic systems in Clatsop County, Oregon are permitted by Clatsop County Community Development (Onsite Septic System Program) under OAR 340-071.

Septic permit program

  • Program type: Mixed
  • Authorized agent: Clatsop County Health Department
  • Own septic program: No, uses Oregon state rules
  • Local rules beyond the state: No
  • Population: 41,072

Permit fee comparison

Average septic permit fee in Clatsop 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 Clatsop 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

Create a free account to see the full details.

Draw a permit-ready site plan for Clatsop County

Enter the address, draw the system on the aerial with the parcel lines and topo, and print it to scale for Clatsop County Community Development (Onsite Septic System Program). See how SepticPro site plans work.

Other Oregon counties

Data checked 2026-03-16. Always confirm requirements with Clatsop County Community Development (Onsite Septic System Program) before applying.