Washington County, Utah — public water systems

59 active public water systems serve Washington County, reporting 244.2K people served.

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

Active systems

Population served

244.2K

Community systems

Groundwater share

79.7%

Water systems in Washington County

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Active public water systems in Washington County, Utah
#	Water system	County	Population served	Type	Source
1	St George City Water System	Washington	105,240	Community	Purchased surface water
2	Washington City	Washington	45,865	Community	Surface water
3	Hurricane City	Washington	25,555	Community	Purchased surface water
4	Utah Tech Culinary Water System	Washington	12,000	Non-transient non-community	Purchased surface water
5	Ivins	Washington	10,465	Community	Purchased surface water
6	Santa Clara City	Washington	9,000	Community	Purchased surface water
7	Hildale - Colorado City	Washington	6,100	Community	Groundwater
8	La Verkin City Water System	Washington	4,500	Community	Groundwater
9	Zion Canyon Water System	Washington	3,380	Community	Groundwater
10	Black Desert Resort Water System	Washington	2,800	Non-transient non-community	Purchased surface water
11	Enterprise Town Water System	Washington	2,200	Community	Groundwater
12	Toquerville Town Water System	Washington	1,931	Community	Groundwater
13	Virgin	Washington	1,512	Community	Purchased groundwater
14	Diamond Valley Acres	Washington	1,340	Community	Groundwater
15	Winchester Hills Water Co	Washington	950	Community	Groundwater
16	Dammeron Valley Water Works LLC	Washington	885	Community	Groundwater
17	Town of Apple Valley - Apple Valley	Washington	815	Community	Groundwater
18	Leeds Domestic Water Users Association	Washington	800	Community	Groundwater
19	Mountain Springs Water Co	Washington	660	Community	Groundwater
20	Gunlock State Park	Washington	640	Transient non-community	Purchased groundwater
21	Springdale Town Water System	Washington	529	Community	Surface water
22	Zion Np- Kolob Visitor Center	Washington	503	Transient non-community	Groundwater
23	Veyo Culinary Water Assn	Washington	500	Community	Groundwater
24	Zion Np - Sinawava Temple	Washington	500	Transient non-community	Groundwater
25	Dixie Deer Ssd	Washington	482	Community	Groundwater
26	Kwu Inc.	Washington	460	Community	Purchased groundwater
27	Washington County Wcd - Sand Hollow	Washington	425	Community	Purchased surface water
28	Angell Springs Ssd	Washington	358	Community	Groundwater
29	Harmony Farms Water Users	Washington	314	Community	Groundwater
30	Camp Kolob - Oak Valley Girl'S Camp	Washington	300	Transient non-community	Purchased groundwater
31	Camp Kolob - Spring Creek	Washington	300	Transient non-community	Groundwater
32	Snow Canyon State Park	Washington	266	Transient non-community	Purchased groundwater
33	Little Creek Travel Center	Washington	250	Transient non-community	Groundwater
34	Virgin Sky	Washington	240	Transient non-community	Groundwater
35	Rockville Pipeline Co	Washington	240	Community	Purchased surface water
36	Kings Row Estates	Washington	234	Community	Purchased surface water
37	New Harmony Water System	Washington	200	Community	Groundwater
38	Washington County Wcd - Cottam	Washington	130	Community	Groundwater
39	Harmony Heights Water Company	Washington	120	Community	Groundwater
40	Gunlock Special Service District	Washington	118	Community	Groundwater
41	Washington County Wcd - Kolob Wells	Washington	100	Transient non-community	Groundwater
42	Pine Valley Mt Farms	Washington	100	Community	Groundwater
43	Holmstead Ranch LLC	Washington	100	Transient non-community	Groundwater
44	Terrace Drive Subdivision	Washington	90	Transient non-community	Groundwater
45	Canyons Rv Resort	Washington	80	Community	Purchased groundwater
46	North Valley Ranches Sub	Washington	78	Community	Groundwater
47	Spruce Culinary Water Co	Washington	75	Transient non-community	Groundwater
48	Town of Apple Valley - Canaan	Washington	62	Community	Groundwater
49	Zion Red Rock	Washington	61	Transient non-community	Groundwater
50	Honeycomb Rocks Campground	Washington	50	Transient non-community	Groundwater