Siskiyou County, California — public water systems

70 active public water systems serve Siskiyou County, reporting 40.9K people served.

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

Active systems

Population served

40.9K

Community systems

Groundwater share

90%

Water systems in Siskiyou County

Active public water systems in Siskiyou County, California
#	Water system	County	Population served	Type	Source
1	Yreka, City of	Siskiyou	7,825	Community	Surface water
2	Mt. Shasta, City of	Siskiyou	3,642	Community	Groundwater
3	Mt. Shasta Ski Park	Siskiyou	3,500	Transient non-community	Groundwater
4	Lake Shastina C.S.D	Siskiyou	2,790	Community	Groundwater
5	Weed, City of	Siskiyou	2,662	Community	Groundwater
6	Lake Siskiyou Campground	Siskiyou	1,800	Transient non-community	Surface water
7	Dunsmuir, City of	Siskiyou	1,707	Community	Groundwater
8	Caltrans-Collier Rest Stop	Siskiyou	1,400	Transient non-community	Surface water
9	Mccloud C.S.D.	Siskiyou	1,317	Community	Groundwater
10	Montague, City of	Siskiyou	1,264	Community	Surface water
11	Happy Camp C.S.D.	Siskiyou	1,100	Community	Surface water
12	Caltrans-Weed Rest Stop	Siskiyou	1,000	Transient non-community	Groundwater
13	Dorris, City of	Siskiyou	887	Community	Groundwater
14	Tulelake, City of	Siskiyou	856	Community	Groundwater
15	Etna, City of	Siskiyou	720	Community	Surface water
16	Fort Jones, Town of	Siskiyou	695	Community	Groundwater
17	Caltrans-Grass Lake Rest Stop	Siskiyou	600	Transient non-community	Groundwater
18	Siskiyou Lake Highlands Mwc	Siskiyou	549	Community	Groundwater
19	Jh Ranch	Siskiyou	403	Transient non-community	Groundwater
20	Fowlers Campground-Stnf	Siskiyou	360	Transient non-community	Groundwater
21	R-Ranch Headquarters	Siskiyou	300	Transient non-community	Groundwater
22	Siskiyou Co. Rolling Hills Mwc	Siskiyou	300	Community	Groundwater
23	R-Ranch Klamath River	Siskiyou	300	Transient non-community	Groundwater
24	Grenada Sanitary District	Siskiyou	289	Community	Groundwater
25	Hornbrook C.S.D.	Siskiyou	280	Community	Groundwater
26	Lake Siskiyou M.W.C.	Siskiyou	277	Community	Groundwater
27	Mdf-Medicine Lake	Siskiyou	250	Transient non-community	Groundwater
28	Lava Beds National Monument	Siskiyou	245	Transient non-community	Groundwater
29	Ash Creek Fire Station-Stnf	Siskiyou	240	Transient non-community	Groundwater
30	Caltrans-Dunsmuir Grade Insp. Facility	Siskiyou	200	Non-transient non-community	Groundwater
31	Kidder Creek Orchard Camp	Siskiyou	200	Transient non-community	Groundwater
32	Juniper Village Farm Labor Housing	Siskiyou	170	Transient non-community	Groundwater
33	Butteville Union School	Siskiyou	165	Non-transient non-community	Groundwater
34	Pneuma Retreat Center - Stewart Mineral	Siskiyou	150	Transient non-community	Groundwater
35	Doctor'S Park Owners Association	Siskiyou	150	Non-transient non-community	Groundwater
36	Monte Shasta M.W.C.	Siskiyou	150	Community	Groundwater
37	Cal Ore Mobile Estates	Siskiyou	146	Community	Groundwater
38	Siskiyou Co.Service Area #5/Carrick	Siskiyou	143	Community	Groundwater
39	Jubilee Railroad Wilderness Lodge	Siskiyou	140	Transient non-community	Groundwater
40	Abrams Lake Mobile Estates	Siskiyou	135	Community	Groundwater
41	Shadow Mountain MHP	Siskiyou	126	Community	Groundwater
42	Weed Golf Club, Inc..	Siskiyou	112	Transient non-community	Groundwater
43	Sun Mountain M.W.C.	Siskiyou	106	Community	Groundwater
44	Cove Mobile Villa	Siskiyou	105	Community	Groundwater
45	Willow Creek School	Siskiyou	100	Non-transient non-community	Groundwater
46	Big Springs Union Elem. School	Siskiyou	95	Non-transient non-community	Groundwater
47	Mcbride Springs Campground	Siskiyou	80	Transient non-community	Groundwater
48	Tennant C.S.D.	Siskiyou	75	Community	Groundwater
49	Callahan Water District	Siskiyou	70	Community	Surface water
50	Cal Fire-Deadwood Conservation Camp	Siskiyou	65	Non-transient non-community	Groundwater