Kern County, California — public water systems

326 active public water systems serve Kern County, reporting 1M people served.

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

Active systems

326

Population served

Community systems

167

Groundwater share

92.6%

Water systems in Kern County

Active public water systems in Kern County, California
#	Water system	County	Population served	Type	Source
1	Cws - Bakersfield	Kern	267,881	Community	Surface water
2	Bakersfield, City of	Kern	160,144	Community	Purchased surface water
3	Delano, City of	Kern	51,428	Community	Groundwater
4	Oildale Mwc	Kern	44,899	Community	Purchased surface water
5	Indian Wells Valley W.D.	Kern	41,580	Community	Groundwater
6	Tejon Castac Wd - I5 & Laval Rd	Kern	38,125	Community	Surface water
7	Vaughn Wc Inc.	Kern	37,189	Community	Groundwater
8	East Niles Csd	Kern	32,517	Community	Purchased surface water
9	Cws - North Garden	Kern	22,762	Community	Surface water
10	Wasco, City of	Kern	22,757	Community	Groundwater
11	Shafter, City of	Kern	21,915	Community	Groundwater
12	West Kern Water District	Kern	20,500	Community	Groundwater
13	Arvin Community Services Dist	Kern	19,669	Community	Groundwater
14	Lamont Public Utility Dist	Kern	19,057	Community	Groundwater
15	Rosamond Csd	Kern	17,711	Community	Purchased surface water
16	California City, City of	Kern	14,198	Community	Purchased surface water
17	Mcfarland, City of	Kern	14,161	Community	Groundwater
18	Greenfield County Wd	Kern	11,590	Community	Groundwater
19	Edwards Afb - Main Base	Kern	11,316	Community	Purchased surface water
20	Golden Hills Csd	Kern	9,857	Community	Groundwater
21	Tehachapi, City of	Kern	9,094	Community	Groundwater
22	China Lake Naval Air Weapons Station	Kern	6,600	Community	Groundwater
23	Bear Valley Csd	Kern	5,592	Community	Groundwater
24	Wasco St. Prison Reception Ctr	Kern	5,124	Community	Groundwater
25	Willow Springs Raceway	Kern	5,022	Transient non-community	Groundwater
26	Famoso Raceway, Smokers Inc..	Kern	5,000	Transient non-community	Groundwater
27	Kern Valley State Prison	Kern	5,000	Community	Groundwater
28	Stallion Springs Csd	Kern	4,910	Community	Groundwater
29	Mojave PUD	Kern	4,699	Community	Purchased surface water
30	Caltrans-Boron Rest Stop Water System	Kern	3,000	Transient non-community	Groundwater
31	Cci - Tehachapi	Kern	2,993	Community	Groundwater
32	Lerdo Sheriff S Facility	Kern	2,800	Community	Groundwater
33	Frazier Park PUD	Kern	2,592	Community	Groundwater
34	Cws - Kernville	Kern	2,572	Community	Surface water
35	Kern Valley Airport	Kern	2,507	Transient non-community	Groundwater
36	Erskine Creek Wc	Kern	2,500	Community	Groundwater
37	Lost Hills Utility District	Kern	2,370	Community	Groundwater
38	Tejon Ranch Grapevine Water	Kern	2,207	Non-transient non-community	Groundwater
39	Mil Potrero Mwc	Kern	2,200	Community	Groundwater
40	Interstate 5 Utility Company	Kern	2,100	Non-transient non-community	Groundwater
41	Boron Csd	Kern	2,086	Community	Purchased surface water
42	Buttonwillow Tiger Mart	Kern	2,006	Transient non-community	Groundwater
43	Bolthouse Fresh Foods	Kern	1,917	Non-transient non-community	Groundwater
44	Wp&A - Lost Hills Water System	Kern	1,888	Non-transient non-community	Surface water
45	Buttonwillow Cwd	Kern	1,508	Community	Groundwater
46	Cal Trans Buttonwillow Sfty Rsra	Kern	1,500	Transient non-community	Groundwater
47	Aera Energy-LLC	Kern	1,500	Non-transient non-community	Groundwater
48	Lebec County Water District	Kern	1,379	Community	Groundwater
49	Rio Bravo Greeley School Water System	Kern	1,219	Non-transient non-community	Groundwater
50	Grimmway Enterprises-Malaga Water System	Kern	1,200	Non-transient non-community	Groundwater