Washington County, PA septic permits and regulations

Septic systems in Washington County, Pennsylvania are permitted by Washington County Sewage Council under 25 PA Code Chapter 73.

Septic permit program

  • Program type: Municipality-Based
  • Authorized agent: Washington County Conservation District
  • Own septic program: No, uses Pennsylvania state rules
  • Local rules beyond the state: No
  • Population: 209,349

Permit fee comparison

Average septic permit fee in Washington County: $1,100. Pennsylvania average: $393.

Local rules

County operates under state-level 25 Pa. Code Chapter 73 (Standards for Onlot Sewage Treatment Facilities). Contact local health department for any additional county-specific requirements.

What SepticPro has on file for Washington County

  • 2 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 Washington County

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

Other Pennsylvania counties

Data checked 2026-03-16. Always confirm requirements with Washington County Sewage Council before applying.