Adams County, Washington — public water systems

49 active public water systems serve Adams County, reporting 25.7K people served.

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

Active systems

Population served

25.7K

Community systems

Groundwater share

95.9%

Water systems in Adams County

Active public water systems in Adams County, Washington
#	Water system	County	Population served	Type	Source
1	Othello Water Department	Adams	8,755	Community	Groundwater
2	Hatton Coulee Rest Area	Adams	3,882	Transient non-community	Groundwater
3	Schrag Eb/Wb Rest Areas	Adams	3,734	Transient non-community	Groundwater
4	Ritzville Water Department	Adams	1,725	Community	Groundwater
5	Lind Town of	Adams	903	Community	Groundwater
6	Adams County Water Dist #1	Adams	870	Community	Purchased groundwater
7	Hgh Inc. Water System	Adams	613	Transient non-community	Groundwater
8	Adams County Fair	Adams	503	Transient non-community	Groundwater
9	Othello Manor LLC	Adams	400	Community	Groundwater
10	Golden Plains MHP #1	Adams	360	Community	Groundwater
11	Washtucna Water Department	Adams	250	Community	Groundwater
12	Summerset West Water Association	Adams	240	Community	Groundwater
13	Saddle Mountain Water Assoc.	Adams	219	Community	Groundwater
14	Bruce Water System	Adams	210	Non-transient non-community	Groundwater
15	Othello Country Club Water Assn	Adams	208	Community	Groundwater
16	Radar Community LLC	Adams	200	Community	Groundwater
17	Iglesia Bethel	Adams	197	Transient non-community	Groundwater
18	Bird Dog Family Ltd Partnership Ii	Adams	186	Community	Groundwater
19	Warden Hutterian Brethren 1	Adams	171	Community	Groundwater
20	Sportsman Trailer Park	Adams	151	Community	Groundwater
21	Bayer Midwest Production Co.	Adams	124	Transient non-community	Groundwater
22	Stahl Hutterian Brethren	Adams	122	Community	Groundwater
23	Hatton Town of	Adams	105	Community	Groundwater
24	Sunburst Estates Water Assn	Adams	100	Community	Groundwater
25	Meadow Lane Water Assn	Adams	98	Community	Groundwater
26	Schaake Rd Housing	Adams	96	Transient non-community	Groundwater
27	Radar 2 Farmworker Housing	Adams	96	Transient non-community	Groundwater
28	Fairview Domestic Water Assn	Adams	89	Community	Groundwater
29	Hi Lo Homeowners Assn	Adams	87	Community	Groundwater
30	Ktw Orchards	Adams	81	Transient non-community	Groundwater
31	West Side Mobile Court	Adams	80	Community	Groundwater
32	Sect 11 Div 1 Ridgeview Water Assn	Adams	79	Community	Groundwater
33	Schoonover Hutterian Brethren	Adams	73	Community	Groundwater
34	Country Cousins	Adams	66	Transient non-community	Groundwater
35	National Food Nw - Lind	Adams	61	Non-transient non-community	Groundwater
36	Rainier Tracts Water Assn	Adams	61	Community	Groundwater
37	Basin View Water Association	Adams	60	Community	Groundwater
38	Cottonwood MHP	Adams	60	Community	Purchased surface water
39	Highland Estates Water System	Adams	53	Community	Groundwater
40	Sm West Farmworker Housing	Adams	52	Transient non-community	Groundwater
41	Klingeman Well	Adams	42	Non-transient non-community	Groundwater
42	Big B Truck Stop	Adams	41	Transient non-community	Groundwater
43	Sunset Acres Water Association	Adams	40	Community	Groundwater
44	South Othello Water Users	Adams	35	Community	Not reported
45	Radar Water Association	Adams	34	Community	Groundwater
46	Crestview Water Association	Adams	31	Transient non-community	Groundwater
47	Country Lane East	Adams	27	Community	Groundwater
48	Monsanto Cunningham Rd	Adams	25	Transient non-community	Groundwater
49	Four Seasons Campground	Adams	15	Transient non-community	Groundwater