Covid-19 Precautions in Place for Environmental Health Division

(Please call us at 258-4755, email to, or send applications to us in the mail at 301 West Alder, Missoula, MT 59802, rather than come into the office.)

Environmental Health Department

The Missoula County Environmental Health Services focuses on the health and safety of Missoula County residents both indoors and outdoors. Here are some of the resources we focus on for healthy living:

Air Quality

The Air Quality Division monitors ambient air quality in Missoula and administers the Missoula City-County Air Pollution Control Program to protect public health and keep our air clean.  The Air Quality Division works to reduce pollution from industrial sources, outdoor burning, wood stoves, motor vehicles and unpaved roads.  The Air Division also issues public health advisories during wildfire smoke events and Air Pollution Alerts and Warnings during winter pollution episodes.

Indoor Exposures 

In Missoula County, aside from the seasonal forest fires we tend to experience, we are lucky to have few problems with outdoor air pollution. But what many don’t realize is that indoor air pollution, in our homes and workplaces, is very common, and it can be extremely dangerous. Here you will find the most common indoor exposures. 

Junk Vehicle Program

Montana was one of the leading states in enacting junk vehicle legislation. Its primary purpose is to control junk vehicles and prevent them from being scattered throughout the countryside, thereby helping to help preserve the beauty of our state.

Missoula Valley Water Quality District

Established in 1993, The Missoula Valley Water Quality District is charged with protecting and improving groundwater and surface water resources in the Missoula Valley. The District accomplishes this through education, monitoring, clean-up advocacy and oversight, proper household hazardous waste management, stormwater and wastewater improvements and riparian protection. 

Recycling & Hazardous Waste Disposal

The Water Quality District and its partners offers Annual Household Hazardous Waste collection events so that people can properly dispose of hazardous waste and provides educational materials to help people choose less toxic and non-toxic products. This helps keep our groundwater and surface water clean.

Septic Systems & Wells

Sewage is a potential source of contamination. Many homes in the county have on-site wastewater disposal systems that dispose of sewage into the ground. Gradually that sewage, if not properly treated, can contaminate our drinking water. The design, construction and location of on-site wastewater disposal systems are regulated to ensure that drinking water quality is not negatively impacted by the placement and design of these systems.

Solid Waste and Community Decay

Improper collection and disposal of garbage and other waste material is not only an eyesore, it is a public health concern.  Under certain conditions, accumulating solid waste is a risk to human health and the environment.  The Missoula City-County Health Code regulates the collection, storage, and disposal of solid waste, and a Missoula County Ordinance addresses community decay.   Community decay issues involve a severe accumulation of rubble, junk, or debris, often in addition to household garbage, that is within public view.  The Environmental Health Division investigates and responds to both solid waste and community decay complaints. 


Missoula City-County Health Department (MCHHD), Environmental Health Division contracts with the Department of Environmental Quality to do Subdivision Review.  In that capacity, MCCHD applies the state regulations that apply to Subdivisions