California utilities 101 to 200.

Each serves 46,525 to 92,819 people, as it reports to EPA. Your ZIP code finds yours faster.

Find a California utility, city or county

101 to 200 of 720, by people served

California utilities, 101 to 200 of 720, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
City of Redwood City	Redwood City	92,819	None found	0
Cal Am Water Company - Monterey	Pacific Grove	92,450	PFOA, PFOS, PFHxS, PFBS	0
City of Westminster	Westminster	90,911	PFOS, PFHxS	0
Santa Monica - City, Water Division	Santa Monica	89,947	PFOA, PFBS	0
City of Redding	Redding	89,628	PFOA, PFOS, PFHxS, PFBS	0
Placer CWA - Foothill	Auburn	89,544	None found	0
Olivenhain MWD	Encinitas	86,458	None found	0
City of Chino	Chino	86,435	None found	0
Western MWD	Riverside	86,062	PFHxS, PFBS	0
City of Manteca	Manteca	84,928	PFOA, PFHxS, PFBS	0
City of Napa	Napa	84,804	None found	1
Indio Water Authority	Indio	84,757	None found	0
Goleta Water District	Goleta	84,462	None found	0
Yorba Linda Water District	Placentia	84,292	None found	0
City of Buena Park	Buena Park	81,998	PFOS, PFHxS	0
City of Milpitas	Milpitas	81,773	None found	0
City of Mountain View	Mountain View	81,501	None found	0
Folsom, City of - Main	Folsom	80,969	None found	0
Inglewood - City, Water Dept.	Inglewood	80,824	PFOA	0
City of Alhambra	Alhambra	79,776	None found	0
City of Upland	Upland	78,376	PFBS	0
Redlands City MUD - Water Div	Redlands	78,025	PFOA, PFOS, PFHxS	0
City of Pleasanton	Pleasanton	76,689	PFOA, PFOS, PFHxS, PFBS	0
South Gate - City, Water Dept.	South Gate	76,443	PFOA, PFOS, PFHxS, PFBS	0
City of Chino Hills	Chino Hills	76,414	None found	0
Compton - City, Water Dept.	Compton	74,877	PFOA, PFOS, PFHxS	0
Desert Water Agency	Palm Springs	74,807	None found	0
City of Turlock	Turlock	72,682	None found	1
Liberty Utilities - Bellflower - Norwalk	Downey	72,624	PFOA, PFOS, PFHxS, PFBS	0
Las Virgenes MWD	Calabasas	72,602	None found	0
City of Tulare	Tulare	72,241	None found	0
California Water Service Co. - Palos Ver	San Jose	71,452	None found	0
City of Yuba City	Yuba City	70,256	None found	0
Cwsc Los Altos Suburban	San Jose	69,973	PFHxS	0
Valley County Water Dist.	Baldwin Park	68,871	None found	0
City of Newport Beach	Newport Beach	68,572	None found	0
City of Lodi	Lodi	68,272	PFOA, PFOS, PFHxS, PFBS	0
Citrus Heights Water District	Citrus Heights	67,818	None found	0
City of Davis	Davis	67,457	None found	0
City of Palo Alto	Palo Alto	67,231	None found	0
Lynwood - City, Water Dept.	Lynwood	66,967	PFOA, PFOS, PFHxS	0
Beaumont Cherry Valley WD	Beaumont	66,841	None found	0
Cal American Water Co	Rosemead	66,809	None found	0
City of Tustin	Tustin	66,600	PFOS, PFHxS	0
City of Madera	Madera	66,560	None found	0
Lakewood - City, Water Dept.	Lakewood	66,135	PFOS, PFHxS	0
Suburban Water Systems - Whittier	Covina	66,045	PFOA, PFOS, PFBS	0
City of Watsonville	Watsonville	65,231	PFOA, PFOS, PFHxS, PFBS	0
Brentwood	Brentwood	64,513	None found	0
Liberty Utilities (Av Ranchos) Corp.	Downey	64,469	None found	0
California Water Service - S San Francisco	San Jose	64,146	None found	0
City of Porterville	Porterville	63,487	PFOA, PFOS, PFHxS, PFBS	1
Gswc - Florence/Graham	Anaheim	63,472	None found	0
City of la Habra	La Habra	63,118	None found	0
City of Pittsburg	Pittsburg	62,500	None found	0
Monterey Park - City, Water Dept.	Monterey Park	62,183	None found	1
City of Hanford	Hanford	62,127	None found	4
North Marin Water District	Novato	61,691	None found	0
City of Woodland	Woodland	61,462	None found	0
California Water Service - Bear Gulch	San Jose	61,431	None found	0
City of Petaluma	Petaluma	60,781	None found	0
California Water Service - Livermore	San Jose	60,414	PFOA, PFOS, PFHxS, PFBS	0
City of Gilroy	Gilroy	59,203	PFOA, PFOS, PFHxS, PFBS	1
Suburban Water Systems - la Mirada	Covina	56,793	PFOA, PFOS, PFHxS, PFBS	0
City of Fountain Valley	Fountain Valley	56,747	PFHxS	0
Gswc - San Dimas	San Dimas	56,538	PFOS	0
Alco Water Service	Salinas	56,253	None found	0
Rowland Water District	Rowland Heights	56,100	None found	0
Monte Vista WD	Montclair	56,017	PFOS, PFHxS	0
Paramount - City, Water Dept.	Paramount	55,200	None found	0
Gswc - Bell, Bell Gardens	Anaheim	55,050	PFOS, PFHxS, PFBS	0
Cal Am - Suburban Rosemont	Sacramento	54,793	PFOA, PFOS, PFHxS	0
City of Lincoln	Lincoln	54,538	PFOS, PFHxS	0
City of Ceres	Ceres	54,513	PFOA, PFOS, PFHxS, PFBS	1
City of Rialto	Rialto	54,453	PFOA, PFHxS, PFBS	0
City of West Sacramento	West Sacramento	53,355	None found	1
City of Thousand Oaks Water Department	Thousand Oaks	53,157	None found	0
Lake Hemet MWD	Hemet	52,913	None found	1
Yucaipa Valley Water District	Yucaipa	52,010	PFOA, PFBS	5
El Toro Water District	Lake Forest	51,800	None found	0
City of San Clemente	San Clemente	51,545	None found	0
City of Delano	Delano	51,428	None found	0
City of Arcadia	Arcadia	51,361	PFOS, PFHxS	0
Cal Am - Parkway	Sacramento	50,573	PFOA, PFOS, PFHxS	0
Gswc - Artesia	Anaheim	50,415	PFOS, PFHxS	0
Golden State WC - Placentia/Yorba Linda	Anaheim	50,381	PFOA, PFOS, PFHxS, PFBS	0
Whittier - City, Water Dept.	Whittier	49,954	PFOA, PFOS, PFBS	0
Glendora - City, Water Dept.	Glendora	49,934	None found	0
City of Poway	Poway	49,888	None found	0
Uc - Davis	Davis	49,616	None found	0
City of Brea	Brea	48,479	None found	0
Cal Am - Lincoln Oaks	Sacramento	48,094	None found	0
Cal/Am Water Company - San Marino	Rosemead	47,995	None found	0
San Luis Obispo Water Department	San Luis Obispo	47,788	None found	0
Cerritos - City, Water Dept.	Cerritos	47,475	PFOS	0
City of Los Banos	Los Banos	47,419	None found	1
City of Morgan Hill	Morgan Hill	47,374	PFHxS	0
Golden State Water Co. - Cordova	Rancho Cordova	47,161	None found	0
Camarillo Water Dept	Camarillo	46,824	None found	0
City of Colton	Colton	46,525	PFOA, PFOS, PFHxS, PFBS	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.

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California utilities 101 to 200.

101 to 200 of 720, by people served

Where to go next

Read your utility’s own report

Every contaminant

Filters, checked