Sewage and Septic

Sewage is a potential source of groundwater contamination. Most residences in Flathead County utilize septic systems, which provide underground treatment and disposal of sewage. Improper treatment of this sewage can contaminate drinking water over time, posing a public health hazard.

The mission of the sewage and septic program is to reduce the incidence of contamination of high-quality state waters through education and enforcement of safe practices. This is accomplished through environmental analysis and permitting of septic systems and investigating violations and complaints.

Not sure where to begin? A good place to start is by submitting a Land Research Request Form. An individual from Environmental Health will be in contact with you within a week or two. Be specific with your plans for the property to ensure we properly answer your questions.

Board of Health Policies

Helpful Links

Environmental Health Services Contact Info

40 11th St. W, Suite 210 (2nd Floor)
Kalispell, MT 59901


406-751-8130 main line
406-751-8131 fax
406-751-8144 air quality

Office Hours
Monday, Tuesday, Thursday, Friday: 8 am – 5 pm
Wednesday: Closed 8:00am – 9:30am Open 9:30am – 5 pm