City and town drinking water records

Water systems serving Great Falls, MT

4 community water systems have a mapped service area in Great Falls, MT. City of Great Falls covers 79% of the area inside Great Falls's Census boundary and reports serving 60,000 people in all.

1 of them had at least one health-based violation in the last 10 years. None of those systems has one still unresolved.

4 rely mainly on surface water, counting water bought from other systems.

1 system filed a lead service line inventory listing 156 lead lines, 582 galvanized lines that must be replaced and 5,383 lines of unknown material.

23 more systems are placed in Great Falls by EPA's town record 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: 4
Systems with a health-based violation, last 10 years: 1
Systems with one unresolved: 0
Lead service lines in inventories: 156

Water systems serving Great Falls

4 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	Area	People served	Main source	Health-based violations, 10 years	Lead lines
City of Great Falls	Covers 79% of Great Falls	60,000	Surface water	5	156
Great Falls RV Park	Mapped area inside Great Falls	274	Purchased surface water	0	No inventory
Big Sky Mobile Home Park	Mapped area inside Great Falls	40	Purchased surface water	0	No inventory
Highwood Mobile Home Park	Mapped area inside Great Falls	400	Purchased surface water	0	No inventory

Systems placed by EPA's town record in Great Falls

23 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 EPA's town record (EPA lists them serving this town), and without a map they are not counted in the figures above.

System	Area	People served	Main source	Health-based violations, 10 years	Unresolved	Lead lines
Malmstrom Air Force Base	Town on record	8,850	Purchased surface water	2	0	0
Sun Prairie Village County	Town on record	1,800	Groundwater	0	0	0
Prairie Water Company	Town on record	1,000	Purchased surface water	0	3	0
Countryside Village MHP GRT FLS	Town on record	600	Purchased surface water	0	0	No inventory
Gore Hill County Water Dist	Town on record	500	Groundwater	0	0	No inventory
Bushard Water Company	Town on record	425	Purchased surface water	1	0	No inventory
Sun Prairie Water District	Town on record	350	Groundwater	0	0	No inventory
Ryan Dam Water System	Town on record	230	Groundwater	1	0	0
South Wind Water and Sewer District	Town on record	200	Groundwater	0	0	0
Grandview Trailer Court	Town on record	165	Purchased surface water	0	0	No inventory
Pleasant Park Community Inc	Town on record	125	Groundwater	0	0	0
Big Bend Ranch Subdivision	Town on record	100	Groundwater	1	4	0
Shade Tree Mobile Park	Town on record	100	Purchased surface water	0	0	No inventory
Rivershore Community LLC	Town on record	90	Purchased surface water	0	0	0
Missouri Meadows Community Inc	Town on record	85	Purchased surface water	0	0	No inventory
Spring Tree Ridge	Town on record	80	Groundwater	1	3	0
Rivers Edge Mobile Home Park GRT FLS	Town on record	75	Purchased surface water	0	0	No inventory
Big Stack Estates	Town on record	60	Purchased surface water	0	0	No inventory
The Falls Mobile Home Community	Town on record	60	Purchased surface water	0	0	No inventory
Park Garden Estates	Town on record	50	Groundwater	0	0	No inventory
Cobblestone Court	Town on record	50	Purchased surface water	0	0	No inventory
Sunset Mobile Home Park	Town on record	45	Purchased groundwater	0	0	0
High Plains H2O LLC	Town on record	25	Purchased surface water	0	0	0

Other cities and towns in Cascade County

14 places

Back to Cascade County, MT

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