Septic Permits are required prior to beginning construction of residential or commercial structures in the County.  Septic Permits are also required prior to any repair, modification or load increase to an existing septic system.  A filed certificate of survey is required as part of the permit application.  Septic site evaluations may be required prior to a septic permit being written. 

Fees vary.


  • Comprehensive Permit Form: PDF
  • Survey - Can be obtained from Clerk and Recorder room 316.
  • Septic Permit Application Material can be obtained from the Permit Coordinator or the Environmental Health Department.

Community Development and Planning Contact Information

Mailing Address:
Lewis and Clark County
Community Development and Planning Department
316 N. Park Ave., Helena, MT 59623

Telephone: (406) 447-8374  
Email: planning(at)