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State directory · dataset 2026.08
Browse 9 indexed systems and see how frequently the directory identified public payment, fee, leak, assistance, and emergency information. Coverage describes the research record—not utility performance.
Montana research snapshot
67%
Online portal identified
6 of 9
11%
Public fee detail
1 of 9
22%
Leak policy detail
2 of 9
22%
Assistance detail
2 of 9
22%
Emergency route
2 of 9
Municipal Department
Service area: Billings and approved areas outside the city limits
Population: Billings is Montana’s largest city and its metropolitan trade area exceeds 185,000 residents; the municipal utility reports more than 32,000 water meters and serves residential and commercial customers inside the city and approved outside-city areas.
Municipal Department
Service area: Billings
Population: 114,000
Municipal Department
Service area: City of Great Falls
Population: 60,000 people (EPA SDWA queue estimate for MT0000525)
Municipal Department
Service area: City of Bozeman
Population: 56,000 people (EPA SDWA queue estimate for MT0000161)
Municipal Department
Service area: Butte-Silver Bow
Population: 33,000 people (EPA SDWA queue estimate for MT0000170)
Municipal Department
Service area: Helena
Population: 32,091 people (EPA SDWA queue estimate for MT0000241)
Municipal Department
Service area: Kalispell
Population: 25,000 people (EPA SDWIS 2026Q2 estimate for MT0000259)
Municipal Department
Service area: Billings
Population: Approximately 114,000 people served by the City of Billings municipal water and wastewater system.
Municipal Department
Service area: MISSOULA
Population: 68200 people (EPA SDWIS 2026Q2 active CWS estimate for MT0000294)
Montana directory notes
This state hub brings together 9 indexed community water systems, from city departments and public authorities to investor-owned systems and smaller regional providers. A service area may cross municipal boundaries, so use the provider name and service address on your bill when choosing a profile.
The most important distinction is between a directory listing and an official account channel. US Water Bill Pay provides a structured starting point; the utility’s own payment portal, published rate schedule, customer-service office, and mailed notice control your account. Compare the payment route, billing frequency, emergency number, and customer-protection notes before relying on a page for a time-sensitive decision.
If you are helping a household with a high bill, leak, or delinquency notice, open the utility profile and review the payment, shut-off, and leak-adjustment guides together. Keep the bill, account number, confirmation receipts, repair records, and notice dates available when speaking with the provider.
