Sanitation Act and Local Wastewater Treatment System

Application Process:

To better serve you and provide staff with the time necessary to complete reviews of submitted applications, please note the following information:

Walk-in Hours:

  • Mondays 1 pm to 5 pm
  • Thursdays 8 am to 12 pm (noon)
  • By appointment: Please call the office at (406) 582-3120 to schedule a time.

We ask that you provide as much of the following information as possible at the time you schedule the appointment so staff can prepare for the meeting:

  • Have you had discussions regarding this project with GCCHD staff? Who?
  • Is this project related to Sanitation Review or a Local Wastewater Treatment System?
  • What is your basic question(s)?
  • Property Owner
  • Property Information: COS, Existing Wastewater Treatment System – Permit #Tract / Lot
  • Minor Subdivision #
  • Existing COSA – EQ # (if you don’t know you can obtain this information in the Gallatin County Clerk & Recorder office, click here for a list of questions to ask)
  • Site Address

Please contact us at:
406.582.3120 or

Si hablas española, envíanos un correo electrónico aquí.