Water quality for ZIP code 59401
ZIP 59401 covers Great Falls in Cascade County, Montana, one of 15 ZIP codes in the county. 97 active public water systems serve the county; 63 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Cascade County
46 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Black Eagle Cascade County Water Sewer Black Eagle |
1,233 | 0 | 1.0 mi | |
| Countryside Village MHP Grt Fls Great Falls |
600 | 0 | 1.3 mi | |
| Bushard Water Company Great Falls |
425 | 3 | 1.3 mi | |
| Pleasant Park Community INC Great Falls |
125 | 3 | 1.3 mi | |
| Shade Tree Mobile Park Great Falls |
100 | 1 | 1.3 mi | |
| Rivershore Community LLC Great Falls |
90 | 0 | 1.3 mi | |
| Big Stack Estates Great Falls |
60 | 1 | 1.3 mi | |
| The Falls Mobile Home Community Great Falls |
60 | 0 | 1.3 mi | |
| Cobblestone Court Great Falls |
50 | 0 | 1.3 mi | |
| Park Garden Estates Great Falls |
50 | 1 | 1.3 mi | |
| Sunset Boulder MHP LLC Great Falls |
45 | 1 | 1.3 mi | |
| High Plains H2o LLC Great Falls |
25 | 0 | 1.3 mi | |
| Grandview Trailer Court Great Falls |
165 | 0 | 1.8 mi | |
| Highwood Mobile Home Park Great Falls |
400 | 1 | 1.9 mi | |
| Big Sky Mobile Home Park Great Falls |
40 | 0 | 2.6 mi | |
| Great Falls RV Park Great Falls |
274 | 0 | 2.9 mi | |
| Missouri Meadows Community INC Great Falls |
85 | 1 | 3.2 mi | |
| Rivers Edge Mobile Home Park Grt Fls Great Falls |
75 | 1 | 3.4 mi | |
| Malmstrom Air Force Base Great Falls |
8,850 | 3 | 3.7 mi | |
| Prairie Water Company Great Falls |
1,000 | 3 | 4.0 mi | |
| South Wind Water and Sewer District Great Falls |
200 | 2 | 4.3 mi | |
| Windy Acres Wua Black Eagle |
50 | 0 | 4.7 mi | |
| Homestead Acres County Water and Sewer Black Eagle |
500 | 3 | 5.9 mi | |
| Gore Hill County Water Dist Great Falls |
500 | 4 | 6.2 mi | |
| Big Bend Ranch Subdivision Great Falls |
100 | 4 | 6.5 mi |
Non-community systems in Cascade County (50: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Cascade County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Montana records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.