Authority‍

The Wyoming Department of Environmental Quality delegated the authority and responsibility to enforce and administer the provisions of W.S. 35-11-304 for small wastewater treatment facilities to Johnson County.

Septic Permits are required for:

• NEW small wastewater treatment facilities.
• Privies, outhouses, and holding tanks.
• Replacement and/or modifications.

Johnson County requires a registered licensed engineer design all septic systems.   A septic acknowledgement is required in addition to all design applications.  For information on Permitting Requirements or application materials contact the County Sanitarian at the:

Johnson County Planning Department
‍26 N DeSmet Ave
Buffalo, WY  82834
307-684-1907

All applications and forms shall be submitted to the Planning Department prior to issuance of a Septic Permit.  Missing or incomplete applications will be returned.

All applications shall be accompanied by the appropriate fee adopted by Resolution # 673‍

Downloadable Forms

• Johnson County Septic Application
• Percolation Test Procedures
• Certificate of Completion

A certificate of Completion is only required when inspection has not be completed. Inspections are required to be arranged 24 hours prior to backfilling.

Septic Regulations:  

• Current Small Wastewater Facility Regulations

Helpful Links:

• FAQS - Coming Soon
• Web Soil Survey
• Wyoming Department of Environmental Quality; Water Quality Division
• Approved Septic Tanks
• Chamber Equivalent Areas