California utilities 201 to 300.

Each serves 24,954 to 46,300 people, as it reports to EPA. Your ZIP code finds yours faster.

Find a California utility, city or county

201 to 300 of 720, by people served

California utilities, 201 to 300 of 720, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
Bellflower - Somerset MWC	Bellflower	46,300	PFOS, PFHxS	0
City of San Jose - Nsj/Alviso	San Jose	45,559	None found	0
Golden State Water Company - Simi Valley	Rancho Cordova	45,128	None found	0
Oildale MWC	Bakersfield	44,899	None found	5
Hawthorne - City Water Dept.	Hawthorne	44,718	None found	0
City of Rohnert Park	Rohnert Park	43,821	PFOS, PFHxS	0
Elk Grove Water District	Elk Grove	43,813	PFHxS	0
City of El Centro	El Centro	43,772	None found	0
Coachella Water Authority	Coachella	43,590	None found	0
Mission Springs WD	Desert Hot Springs	43,484	None found	0
Diablo Water District	Oakley	43,357	None found	0
Gswc - Norwalk	Anaheim	43,167	None found	0
City of San Bruno	San Bruno	42,631	None found	0
Camp Pendleton (South)	Camp Pendleton	42,219	PFHxS, PFBS	4
Indian Wells Valley W.D.	Ridgecrest	41,580	None found	0
Carmichael Water District	Carmichael	41,193	None found	0
South Coast Water District	Laguna Beach	41,118	None found	0
California State University Fresno	Fresno	41,000	PFOA, PFBS	0
Soquel Creek Water District	Soquel	40,809	None found	0
Pico Rivera - City, Water Dept.	Pico Rivera	40,600	PFOA, PFOS, PFHxS, PFBS	0
Lompoc - City Water Utility Div	Lompoc	40,473	None found	0
San Dieguito WD	Encinitas	40,405	PFOA, PFBS	0
City of Calexico	Calexico	40,357	None found	2
Beverly Hills - City, Water Dept.	Beverly Hills	40,121	None found	0
City of Adelanto	Adelanto	39,930	PFOS, PFHxS	0
Gswc - Claremont	San Dimas	39,730	PFOA, PFOS, PFHxS, PFBS	0
Santa Margarita Water District - Id9	San Juan Capistrano	39,684	None found	0
San Gabriel County WD	Rosemead	39,345	None found	0
City of Livermore	Livermore	38,892	None found	0
North Coast County Water Dist	Pacifica	38,546	None found	0
Marina Coast Water District	Marina	38,377	None found	0
Gswc - Culver City	Santa Fe Springs	38,233	None found	0
Tejon Castac WD - I5 & Laval Rd	Lebec	38,125	None found	0
Monrovia - City, Water Dept.	Monrovia	37,931	PFOA, PFOS, PFHxS	0
Vaughn WC Inc	Bakersfield	37,189	None found	0
Ramona Municipal WD	Ramona	37,047	None found	0
NAS North Island & Nab Coronado	San Diego	36,990	None found	0
Rubidoux Community SD	Jurupa Valley	36,827	None found	0
Truckee - Donner PUD, Main	Truckee	36,730	PFOA	0
Estero Municipal Improvement District	Foster City	36,556	None found	0
Fair Oaks Water District	Fair Oaks	36,226	None found	0
Stanford University	Stanford	35,853	None found	1
Crescenta Valley CWD	La Crescenta	35,841	PFOA, PFHxS, PFBS	0
Cal Am - Antelope	Sacramento	35,534	None found	0
Ventura Cwwd No. 1 - Moorpark	Moorpark	35,514	None found	0
Lakeside WD	Lakeside	35,500	PFOS, PFHxS, PFBS	0
California Water Service - San Carlos	San Jose	35,344	None found	0
Fallbrook PUD	Fallbrook	35,237	None found	0
City of Lathrop	Lathrop	35,080	PFOS, PFHxS, PFBS	0
Golden State Water Company - Orcutt	Hawthorne	34,102	None found	0
City of Hemet	Hemet	33,828	None found	0
Covina - City, Water Dept.	Covina	33,300	None found	0
Camrosa Water District	Camarillo	32,700	PFOS	0
Manhattan Beach - City, Water Dept.	Manhattan Beach	32,697	None found	0
Golden State Water Co - Barstow	Apple Valley	32,547	PFOA, PFHxS	0
East Niles CSD	Bakersfield	32,517	None found	3
Los Angeles Cwwd 29 & 80 - Malibu	Alhambra	32,348	None found	0
City of Banning	Banning	31,680	None found	0
City of Burlingame	Burlingame	31,451	None found	0
La Verne, City WD	La Verne	31,334	None found	1
City of Paso Robles Water Division	Paso Robles	31,176	PFOA, PFHxS, PFBS	0
City of Santa Paula	Santa Paula	31,018	None found	0
City of Martinez	Martinez	30,997	None found	0
SCWA Mather - Sunrise	Sacramento	30,825	None found	1
Rincon del Diablo MWD (ID - 1)	Escondido	30,757	None found	0
Atascadero Mutual Water Co	Atascadero	30,618	PFOA, PFOS, PFHxS, PFBS	0
Mid - Peninsula Water District	Belmont	30,609	None found	0
Valley Center MWD	Valley Center	29,938	None found	0
Calif State Polytechnical Univ - Pomona	Pomona	29,854	PFHxS, PFBS	3
San Juan Water District	Granite Bay	29,598	None found	0
City of East Palo Alto	East Palo Alto	29,519	None found	0
City of Atwater	Atwater	29,479	PFOA, PFOS, PFHxS, PFBS	0
Suisun - Solano Water Authority	Vacaville	29,105	None found	11
Pechanga	Temecula	29,100	PFBS	0
Vernon - City, Water Dept.	Vernon	28,112	None found	0
Placer CWA - Auburn/Bowman	Auburn	27,294	None found	0
City of Dinuba	Dinuba	27,281	None found	1
City of Lemoore	Lemoore	27,185	None found	39
City of Benicia	Benicia	27,131	PFBS	0
City of Eureka	Eureka	27,078	None found	0
Gswc - South Arcadia	San Dimas	27,072	PFOA, PFOS, PFHxS	0
City of Brawley	Brawley	26,862	None found	0
Montebello Land & Water Co.	Montebello	26,554	PFOA, PFOS, PFHxS, PFBS	0
City of Galt	Galt	26,536	None found	0
Cws - Selma	San Jose	26,517	None found	0
Hi Desert WD	Yucca Valley	26,411	PFHxS	0
Liberty Utilities - Compton	Downey	26,371	None found	0
City of Sanger	Sanger	26,357	PFOA, PFOS	1
Gswc - South San Gabriel	San Dimas	26,240	None found	0
Big Bear Lake Dwp - Big Bear System	Big Bear Lake	26,132	PFOA, PFOS, PFHxS, PFBS	0
City of Reedley	Reedley	26,076	None found	0
City of Hollister	Hollister	26,017	None found	4
Town of Windsor	Windsor	25,561	None found	0
City of South Pasadena	South Pasadena	25,329	None found	0
Sunny Slope Water Co.	Pasadena	25,252	None found	0
City of Loma Linda	Loma Linda	25,129	None found	0
City of Norco	Norco	25,068	PFOA, PFOS, PFHxS, PFBS	1
Orchard Dale Water District	Whittier	25,000	PFOA, PFOS, PFHxS, PFBS	0
City of Patterson	Patterson	24,977	None found	0
Sunnyslope County Water Dist	Hollister	24,954	PFOA, PFOS	0

Utilities EPA sampled under UCMR 5, plus any other community system serving 3,300 people or more. Smaller systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q2 and UCMR 5.