Medical Waste Regulations in Montana (2026)
Generator registration, storage limits, approved treatment, transport rules, and penalties under Montana Department of Environmental Quality (DEQ), Waste Management and Remediation Division, with the primary statute behind every line.
Montana medical waste rules at a glance
| Governing agency | Montana Department of Environmental Quality (DEQ), Waste Management and Remediation Division |
|---|---|
| Primary statute / rule |
|
| Generator registration | Montana does not require infectious waste generators to register with DEQ. A person who must already hold a state license to operate a health care facility, or to practice a regulated profession that generates infectious waste, may not generate, store, or transport that waste without that license, and the board or department that issues the facility or professional license adopts the implementing rules. DEQ-administered registration under ARM 17.50.1503 applies only to off-site transporters and storage facility operators, not to generators. [source] |
| On-site storage time limit | Montana sets storage limits by temperature for transporters and storage facilities (not a single flat number) under ARM 17.50.1507: infectious waste must be stored under conditions that prevent rapid microbial growth, at less than 45 degrees Fahrenheit, for no more than seven days at a temperature between 32 and 45 degrees Fahrenheit, and for no more than 30 days at a temperature below 32 degrees Fahrenheit, with the storage area temperature logged daily and time in transit counted as time in storage. The statute (75-10-1005) requires generators to store infectious waste until it is rendered noninfectious but states no separate generator day limit. [source] |
| Approved treatment methods |
|
| Transport / manifest rules | Montana does not impose a state cradle-to-grave manifest form, but under ARM 17.50.1505 a transporter must keep records of the loading dates, volumes, sources, waste descriptions, and final destinations of all infectious waste transported, retain those records for five years for DEQ inspection, carry a spill containment and cleanup kit, and follow the U.S. DOT warning and signage requirements in 49 CFR 172.323. The statute (75-10-1005(6)) requires the waste to be confined in a leakproof, noncompacting, fully enclosed vehicle compartment. [source] |
| On-site treatment allowed? | Yes. Generators may treat infectious waste on site using any approved method in 75-10-1005(4) (incineration, steam sterilization, or approved chemical or alternative sterilization); treated waste may then go to a DEQ-approved solid waste facility, and the waste may instead be hauled off site by the generator, a municipal solid waste service, or a commercial hauler in a leakproof, noncompacting, fully enclosed vehicle compartment. [source] |
| Penalty range | A person who violates the Infectious Waste Management Act or its rules is guilty of a misdemeanor under 75-10-1007, MCA, with absolute liability per 45-2-104. Because Part 10 specifies no separate fine amount, the default misdemeanor penalty in 46-18-212, MCA applies, which is up to $500 in fines or up to six months in county jail, or both. [source] |
What is unique about Montana
Montana splits its infectious waste oversight: the Department of Environmental Quality registers and regulates off-site transporters and storage facilities under ARM 17.50.15, but generators are governed through the existing license they already hold for their health care facility or profession, so there is no separate DEQ generator registration (75-10-1006, MCA). Storage limits are temperature-tiered rather than a single number, with waste held below 45 degrees Fahrenheit, no more than seven days between 32 and 45 degrees Fahrenheit, and no more than 30 days below 32 degrees Fahrenheit, and transit time counts as storage time. Treatment is also unusually specific: the steam sterilization standard is a 6 Log10 reduction of Geobacillus stearothermophilus spores and mycobacteria (ARM 17.50.1506(4)).
Frequently asked questions
Which agency regulates medical and infectious waste in Montana?
The Montana Department of Environmental Quality (DEQ) regulates infectious waste under the Infectious Waste Management Act at MCA 75-10-1001 to 75-10-1007 and the rules at ARM 17.50.15. DEQ directly registers off-site transporters and storage facilities; generators are regulated through the board or department that licenses their health care facility or profession (75-10-1006, MCA).
Do Montana medical waste generators have to register with DEQ?
No. Montana does not require a separate DEQ generator registration. Under 75-10-1006, MCA, a person who already needs a state license to run a health care facility or to practice a regulated profession may not generate, store, or transport infectious waste without that license. DEQ registration under ARM 17.50.1503 applies only to off-site transporters and storage facility operators.
How long can infectious waste be stored in Montana?
Under ARM 17.50.1507, infectious waste handled by transporters and storage facilities must be kept under conditions preventing rapid microbial growth: below 45 degrees Fahrenheit, no more than seven days at 32 to 45 degrees Fahrenheit, and no more than 30 days below 32 degrees Fahrenheit, with daily temperature logging and transit time counted as storage. The statute requires generators to hold the waste until it is rendered noninfectious but sets no separate flat day limit on generators.
What treatment methods are approved for infectious waste in Montana?
Under 75-10-1005(4), MCA, approved methods are incineration with complete combustion, steam sterilization, and sterilization by standard chemical or other scientifically proven techniques approved by authorities. ARM 17.50.1506 sets the steam sterilization performance standard at a 6 Log10 reduction of Geobacillus stearothermophilus spores and mycobacteria and lets DEQ approve validated alternative methods. Liquid or semisolid waste may also be sewered after chemical sterilization.
Disposal guides
Compare other states
See all 51 jurisdictions side by side → Montana enforcement data →