Governing Law and Regulations
Public water supplies: Montana Public Water Supplies, Treatment and Distribution Act, Montana Code Annotated (MCA) 75-6-101 to 75-6-126
Water Treatment Plant Operators Act, MCA 37-42-101 to 37-42-322
Drinking Water State Revolving Fund Act, MCA 75-6-201 to 75-6-236
Regional Water and Wastewater Authority Act, MCA 75-6-301 to 75-6-329
Public water supplies: Administrative Rules of Montana (ARM) 17.38.201 to 17.38.312
Regulated activities: ARM 17.38.101
Hauling drinking water equipment requirements: ARM 17.38.501 to 17.38.513
Private water supply licenses: ARM 17.38.701
Operator certification: ARM 17.40.201 to 17.40.215
Domestic sewage disposal: ARM 17.38.702
Livestock management: ARM 17.38.703
Montana Department of Environmental Quality (DEQ) Permitting and Compliance Division Public Water Supply and Subdivisions Bureau
Montana Department of Health and Environmental Sciences (MDHES)
Montana Department of Public Health and Human Services (MDPHHS)
U.S. Environmental Protection Agency (EPA) Region 8
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Montana generally follows drinking water requirements established under the federal Safe Drinking Water Act (SDWA). Montana has adopted the maximum contaminant levels (MCL) under the SDWA by reference. See the national section DRINKING WATER for additional guidance regarding MCLs.
Montana provides some detailed standards for private water supplies related to operation, hauling of water, licenses, and livestock management.
The state also implements training, testing, and continuing education services for water treatment ...