Cascade County, Montana — public water systems

99 active public water systems serve Cascade County, reporting 96.5K people served.

Dataset updated July 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

Population served

96.5K

Community systems

Groundwater share

52.5%

Water systems in Cascade County

Active public water systems in Cascade County, Montana
#	Water system	County	Population served	Type	Source
1	Great Falls City of	Cascade	60,000	Community	Surface water
2	Malmstrom Air Force Base	Cascade	8,850	Community	Purchased surface water
3	Source Giant Springs Inc.	Cascade	3,007	Non-transient non-community	Groundwater
4	Montana Expo Park Cascade County	Cascade	2,510	Transient non-community	Purchased surface water
5	Sun Prairie Village County	Cascade	1,800	Community	Groundwater
6	University of Providence	Cascade	1,472	Non-transient non-community	Purchased surface water
7	Black Eagle Cascade County Water Sewer	Cascade	1,233	Community	Purchased surface water
8	Giant Springs State Park	Cascade	1,011	Transient non-community	Groundwater
9	Prairie Water Company	Cascade	1,000	Community	Purchased surface water
10	Culligan Water Conditioning Great Falls	Cascade	900	Non-transient non-community	Purchased surface water
11	Town Pump Gore Hill	Cascade	760	Transient non-community	Groundwater
12	Cascade Town of	Cascade	650	Community	Groundwater
13	Countryside Village MHP Grt Fls	Cascade	600	Community	Purchased surface water
14	Belt Town of	Cascade	600	Community	Groundwater
15	Vaughn Cascade County Water and Sewer	Cascade	585	Community	Groundwater
16	Two Buttes Water Users Assn	Cascade	525	Community	Groundwater
17	Missouri River Bar and Grill	Cascade	512	Transient non-community	Purchased groundwater
18	Armington Jct Belt Rest Stop	Cascade	510	Transient non-community	Groundwater
19	Homestead Acres County Water and Sewer	Cascade	500	Community	Groundwater
20	Gore Hill County Water Dist	Cascade	500	Community	Groundwater
21	Bushard Water Company	Cascade	425	Community	Purchased surface water
22	Mountain View Co-Op Ulm	Cascade	421	Transient non-community	Purchased surface water
23	Highwood Mobile Home Park	Cascade	400	Community	Purchased surface water
24	Sun Prairie Water District	Cascade	350	Community	Groundwater
25	Mt Air Natl Guard 120th Air Lift Wing	Cascade	350	Non-transient non-community	Purchased surface water
26	Frontier Inn	Cascade	300	Transient non-community	Purchased surface water
27	Centerville School	Cascade	292	Non-transient non-community	Groundwater
28	Great Falls Koa Kampground	Cascade	287	Non-transient non-community	Groundwater
29	Great Falls Rv Park	Cascade	274	Community	Purchased surface water
30	Ryan Dam Water System	Cascade	230	Community	Groundwater
31	Neihart Town of	Cascade	229	Community	Surface water
32	Headquarters Building Region 4	Cascade	220	Transient non-community	Groundwater
33	Stockett Water and Sewer Dist	Cascade	210	Community	Groundwater
34	Tracy Water Users Corp	Cascade	200	Community	Groundwater
35	Lds Church Sun River	Cascade	200	Transient non-community	Purchased surface water
36	South Wind Water and Sewer District	Cascade	200	Community	Groundwater
37	Simms High School	Cascade	180	Non-transient non-community	Groundwater
38	Sand Coulee Water Users District	Cascade	180	Community	Groundwater
39	Grandview Trailer Court	Cascade	165	Community	Purchased surface water
40	Heritage Baptist Church	Cascade	151	Transient non-community	Purchased surface water
41	Big Stone Colony Inc.	Cascade	130	Community	Groundwater
42	Pleasant Park Community Inc.	Cascade	125	Community	Groundwater
43	Beef N Bone Steakhouse	Cascade	123	Transient non-community	Groundwater
44	Pleasant Valley Colony	Cascade	120	Community	Groundwater
45	Cascade Colony	Cascade	105	Community	Groundwater
46	Fairhaven Colony	Cascade	105	Community	Groundwater
47	First Peoples Buffalo Jump State Park	Cascade	105	Transient non-community	Groundwater
48	Shade Tree Mobile Park	Cascade	100	Community	Purchased surface water
49	Hilltop Colony	Cascade	100	Community	Groundwater
50	Tri Hil Wua Gore Hill	Cascade	100	Non-transient non-community	Groundwater