Tap Truth EPA drinking water records, in plain English

County drinking water records

Cascade County, MT drinking water systems

30 community water systems serve Cascade County, MT, reporting 79,291 people served in all.

8 of them (27%) had at least one health-based violation in the last 10 years. 4 systems still have one unresolved.

19 rely mainly on groundwater and 11 on surface water, counting water bought from other systems.

21 systems filed a lead service line inventory listing 157 lead lines, 734 galvanized lines that must be replaced and 5,628 lines of unknown material.

17 more systems are placed in Cascade County, MT by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
30
People served, sum of each system's own figure
79,291
Systems with a health-based violation, last 10 years
8
Systems with one unresolved
4
Lead service lines in inventories
157

Water systems serving Cascade County

30 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Great Falls Great Falls 60,000 Surface water 5 0 156
Malmstrom Air Force Base Malmstrom AFB and Great Falls 8,850 Purchased surface water 2 0 0
Sun Prairie Village County Sun Prairie and Great Falls 1,800 Groundwater 0 0 0
Black Eagle Cascade County Water Sewer Black Eagle 1,233 Purchased surface water 4 0 1
Prairie Water Company Great Falls and land outside it 1,000 Purchased surface water 0 3 0
Town of Cascade Cascade 650 Groundwater 0 0 0
Town of Belt Belt 600 Groundwater 0 0 0
Vaughn Cascade County Water and Sewer Vaughn 585 Groundwater 0 0 0
Two Buttes Water Users Assn Simms and Sun River 525 Groundwater 0 0 0
Gore Hill County Water Dist Great Falls and land outside it 500 Groundwater 0 0 No inventory
Homestead Acres County Water and Sewer Black Eagle and land outside it 500 Groundwater 1 0 0
Highwood Mobile Home Park Great Falls 400 Purchased surface water 0 0 No inventory
Sun Prairie Water District Sun Prairie and Great Falls 350 Groundwater 0 0 No inventory
Great Falls RV Park Great Falls 274 Purchased surface water 0 0 No inventory
Town of Neihart Neihart 229 Surface water 0 0 0
Stockett Water and Sewer Dist Stockett 210 Groundwater 1 0 0
South Wind Water and Sewer District Great Falls and land outside it 200 Groundwater 0 0 0
Tracy Water Users Corp Tracy and Sand Coulee 200 Groundwater 0 0 0
Sand Coulee Water Users District Sand Coulee 180 Groundwater 1 3 No inventory
Grandview Trailer Court Great Falls and land outside it 165 Purchased surface water 0 0 No inventory
Pleasant Valley Colony Pleasant Valley Colony and Belt 120 Groundwater 0 0 0
Cascade Colony Sun River and land outside it 105 Groundwater 0 0 0
Fairhaven Colony Ulm 105 Groundwater 0 0 0
Big Bend Ranch Subdivision Great Falls and land outside it 100 Groundwater 1 4 0
Missouri Meadows Community Inc Great Falls and land outside it 85 Purchased surface water 0 0 No inventory
Spring Tree Ridge Great Falls and land outside it 80 Groundwater 1 3 0
Red Sky Mobile Home Community Vaughn 80 Purchased groundwater 0 0 0
Rivers Edge Mobile Home Park GRT FLS Great Falls and land outside it 75 Purchased surface water 0 0 No inventory
Windy Acres WUA Black Eagle and land outside it 50 Groundwater 0 0 0
Big Sky Mobile Home Park Great Falls 40 Purchased surface water 0 0 No inventory

Systems placed by county record in Cascade County

17 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Countryside Village MHP GRT FLS County on record 600 Purchased surface water 0 0 No inventory
Bushard Water Company County on record 425 Purchased surface water 1 0 No inventory
Ryan Dam Water System County on record 230 Groundwater 1 0 0
Big Stone Colony Inc County on record 130 Groundwater 0 0 0
Pleasant Park Community Inc County on record 125 Groundwater 0 0 0
Shade Tree Mobile Park County on record 100 Purchased surface water 0 0 No inventory
Hilltop Colony County on record 100 Groundwater 0 0 0
Rivershore Community LLC County on record 90 Purchased surface water 0 0 0
Hillcrest Colony County on record 89 Groundwater 0 0 0
Grassland Colony County on record 80 Groundwater 0 0 0
Big Stack Estates County on record 60 Purchased surface water 0 0 No inventory
The Falls Mobile Home Community County on record 60 Purchased surface water 0 0 No inventory
Park Garden Estates County on record 50 Groundwater 0 0 No inventory
Cobblestone Court County on record 50 Purchased surface water 0 0 No inventory
Sunset Mobile Home Park County on record 45 Purchased groundwater 0 0 0
Riceville Heights Subdivision County on record 25 Groundwater 0 0 No inventory
High Plains H2O LLC County on record 25 Purchased surface water 0 0 0

Cities and towns in Cascade County

15 places

Back to Montana

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations