Natrona County, WY septic permits and regulations

Septic systems in Natrona County, Wyoming are permitted by Natrona County Development Department under Wyoming Water Quality Rules Chapter 25.

Septic permit program

  • Program type: Mixed
  • Authorized agent: Natrona County County Health Department
  • Own septic program: No, uses Wyoming state rules
  • Local rules beyond the state: No
  • Population: 79,955

Permit fee comparison

Average septic permit fee in Natrona County: $225. Wyoming average: $225.

Local rules

County operates under state-level Chapter 11 (Small Wastewater Systems) of Wyoming DEQ Water Quality Rules. Contact local health department for any additional county-specific requirements.

What SepticPro has on file for Natrona County

  • 4 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 Natrona County

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

Other Wyoming counties

Data checked 2026-03-16. Always confirm requirements with Natrona County Development Department before applying.