Environmental Health
A division of the
Flathead City-County
Health Department
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Environmental Health - Sewage and Septic Information
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Sewage and Septic Information
Please read changes effective June 2007for Site Reviews for Previously Approved Drainfield and Well Sites
Fee Schedule Effective June 1, 2007(pdf)
Public water and Sewer Systems
Plans for public water and sewer projects are reviewed and sanitary surveys of public water supplies are conducted by this program
Sewage Treatment System Services
Activities of this program deal with compliance with the Flathead County Regulations for Sewage Treatment Systems. Permitting, site evaluations and inspection of sewage treatment installations are the primary program activities.
Commercial and Residential Septic System Applications
Please call Environmental Health for possible fees and information regarding the application. 751-8130
- Commercial Joint Site Evaluation and Septic System Application (pdf) Updated 10-18-11
- Residential Joint Site Evaluation and Septic System Application(pdf) Updated 10-18-11
Helpful septic and sewage links
- Homeowners guide to septic systems(PDF format)
- Homeowner septic system checklist(PDF format)
- EPA's septic website
- Pump Design Worksheet Excel