Big Horn County, Wyoming — public water systems

28 active public water systems serve Big Horn County, reporting 11.8K people served.

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

Active systems

Population served

11.8K

Community systems

Groundwater share

82.1%

Water systems in Big Horn County

Active public water systems in Big Horn County, Wyoming
#	Water system	County	Population served	Type	Source
1	Greybull, Town of	Big Horn	3,260	Community	Groundwater
2	Lovell, Town of	Big Horn	2,360	Community	Purchased surface water
3	Basin, Town of	Big Horn	1,250	Community	Purchased groundwater
4	South Big Horn County Jpb	Big Horn	900	Community	Groundwater
5	Cowley, Town of	Big Horn	800	Community	Groundwater
6	Byron, Town of	Big Horn	593	Community	Purchased surface water
7	Antelope Butte Ski Area	Big Horn	527	Transient non-community	Surface water
8	Burlington, Town of	Big Horn	348	Community	Purchased groundwater
9	Medicine Lodge St Hist Site	Big Horn	230	Transient non-community	Groundwater
10	Deaver Municipal Water System	Big Horn	176	Community	Purchased surface water
11	Frannie, Town of	Big Horn	160	Community	Purchased surface water
12	South End Water Users S&I District	Big Horn	150	Community	Purchased groundwater
13	Shell Town Water Improvement District	Big Horn	120	Community	Purchased groundwater
14	Manderson, Town of	Big Horn	110	Community	Purchased groundwater
15	Bhnf-Boulder Park Cg	Big Horn	100	Transient non-community	Groundwater
16	Bhnf-Sitting Bull Cg	Big Horn	100	Transient non-community	Groundwater
17	American Colloid Company	Big Horn	93	Non-transient non-community	Groundwater
18	Georgia-Pacific Gypsum LLC	Big Horn	90	Non-transient non-community	Groundwater
19	Greybull Heights Water Users	Big Horn	84	Community	Purchased groundwater
20	Bentonite Performance Minerals/Lovell	Big Horn	68	Non-transient non-community	Groundwater
21	Hyattville S&I District	Big Horn	66	Community	Groundwater
22	Scharen Subdivision	Big Horn	50	Community	Purchased groundwater
23	Bighorn Canyon Nat'L Rec. Area	Big Horn	40	Transient non-community	Groundwater
24	Bhnf-Ranger Creek Cg	Big Horn	40	Transient non-community	Groundwater
25	Wyoming High Country, LLC	Big Horn	35	Transient non-community	Groundwater
26	Bighorn Nf-Tyrrell Work Center	Big Horn	30	Transient non-community	Groundwater
27	Camp Paintrock	Big Horn	25	Transient non-community	Groundwater
28	Blm - Five Springs Campground	Big Horn	25	Transient non-community	Groundwater