California utilities 1,701 to 1,800.

Each serves 130 to 150 people, as it reports to EPA. Your ZIP code finds yours faster.

Find a California utility, city or county

1,701 to 1,800 of 2,762, by people served

California utilities, 1,701 to 1,800 of 2,762, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
Birchim Community Service District	Toms Place	150	Not sampled	0
Buehner Water System	Tracy	150	Not sampled	0
Butano Canyon Mutual	Pescadero	150	Not sampled	0
Cal Fire Baseline Conservation Camp	Jamestown	150	Not sampled	6
Calico Lake Homeowners	Hesperia	150	Not sampled	1
California Orchard WS	King City	150	Not sampled	0
Casmalia Community Services District	Casmalia	150	Not sampled	0
Castle Airport	Merced	150	Not sampled	1
Desert Dawn MWC	Lucerne Valley	150	Not sampled	0
Elkins Ranch	Fillmore	150	Not sampled	2
Fairway Mutual Water Co	Kingsburg	150	Not sampled	1
Foster Road Mutual Water Company	Santa Maria	150	Not sampled	0
Hollister Ranch Estates	Hollister	150	Not sampled	7
Islander Marina	Sacramento	150	Not sampled	0
MD 24 Teaford Meadow Lakes	Madera	150	Not sampled	50
MD 40 Sunset Ridge Estates	Madera	150	Not sampled	0
MD 60 Dillon Estates	Madera	150	Not sampled	0
MD 95 Ranchos West	Madera	150	Not sampled	0
Meadowlark Ranches Mutual Water Company	Santa Ynez	150	Not sampled	0
Mission Highlands Mutual Water Co.	Sonoma	150	Not sampled	0
Monte Shasta M.W.C.	MT. Shasta	150	Not sampled	0
NPS - Death Valley, Furnace Creek	Death Valley	150	Not sampled	0
Ocotillo Mutual Water Co	Ocotillo	150	Not sampled	1
Oid #22 - Williams Tract	Oakdale	150	Not sampled	0
Palomar Mountain Mutual Water Co.	Bonita	150	Not sampled	0
Reche Canyon Mutual Water Co.	Colton	150	Not sampled	0
Riebli Mutual Water Company	Fulton	150	Not sampled	0
River'S Edge Marina & Resort	Isleton	150	Not sampled	1
Shady Rest Trailer Court	Danville	150	Not sampled	0
Sunrise Estates Mutual Water Company	Jamul	150	Not sampled	0
Tassajara Springs WS	Carmel Valley	150	Not sampled	0
Vieira'S Resort, Inc	Isleton	150	Not sampled	8
Walker Ranch CSD	Quincy	150	Not sampled	0
West Tehachapi Mutual	Tehachapi	150	Not sampled	0
Yosemite NPS - Wawona	Yosemite Np	150	Not sampled	0
Youth With A Mission - Springs of Living W	Richardson Springs	150	Not sampled	0
Fairway Estates PWS CSA - 18	Stockton	149	Not sampled	0
Currier Estates Water Corp	Tracy	148	Not sampled	0
George Ranch Mutual Water Company	Hercules	148	Not sampled	1
Hart Creek Estates Mutual Water Co.	Bakersfield	148	Not sampled	0
Mulberry MHP	Stockton	148	Not sampled	0
Roseview Heights Mutual Water Company	San Jose	148	Not sampled	1
Cal Ore Mobile Estates	Yorba Linda	146	Not sampled	0
Ponderosa Mobile Home Park	Dana Point	146	Not sampled	2
Corral Hollow PWS	Stockton	145	Not sampled	0
Mira Monte Water Co.	Gerber	145	Not sampled	1
Raineri Mutual Water Company	Los Gatos	145	Not sampled	2
San Martin Foothills Water Company	San Martin	145	Not sampled	0
Oid #45	Oakdale	144	Not sampled	0
East Valley Farms Mutual Water Company	Santa Maria	142	Not sampled	1
Kennon Water Company	San Jose	142	Not sampled	1
Pine Grove Mobile Home Park	San Diego	142	Not sampled	0
White Mountain Mutual Water Company	Bishop	142	Not sampled	0
Desert Palms Mobile Home Park	Rancho Cucamonga	140	Not sampled	0
Farrar Park Property Owners	Bethel Island Rd	140	Not sampled	0
Harris Farms Headquarters	Coalinga	140	Not sampled	6
Maher Mutual Water Company	Bakersfield	140	Not sampled	14
Maywood Mobile Home Park	Corning	140	Not sampled	1
Susan River Park Water Co.	Westwood	140	Not sampled	0
Terra Nova Mobile Home Park	Rancho Cucamonga	140	Not sampled	0
Wynola Water District	San Ysabel	140	Not sampled	0
Gran Cielo Mutual Water Company	San Simeon	139	Not sampled	0
Cws - Mullen Water Company	San Jose	138	Not sampled	0
Harvest Moon Mutual Water Co	Bakersfield	138	Not sampled	0
Oakhurst Mobile Home Estates	Yorba Linda	138	Not sampled	0
Plainview MWC - Central Water	Strathmore	138	Not sampled	9
Sierra Grande Estates Mutual Water Co.	Bishop	138	Not sampled	1
Sportsmans Paradise	Blythe	138	Not sampled	0
Trinity Knolls Mutual Water Company	Trinity Center	138	Not sampled	1
Cedar Valley Mutual Water Co	Oakhurst	137	Not sampled	31
El Nido Mobile Home Park	Sacramento	137	Not sampled	0
Sisquoc	Santa Maria	137	Not sampled	0
Merrill Gardens Iris Canyon WS	Monterey	136	Not sampled	0
Wilsona Gardens Mutual	Lancaster	136	Not sampled	0
Abrams Lake Mobile Estates	Yorba Linda	135	Not sampled	0
Irish Hills Mutual Water Co	San Luis Obispo	135	Not sampled	0
Kelly Mutual Water Company	Sebastopol	135	Not sampled	1
Madera Co Sa16 Sumner Hill	Madera	135	Not sampled	63
Valley View Trailer Park	Hopewell	135	Not sampled	1
Apple Valley Village Mhe	Yorba Linda	134	Not sampled	0
Gold Beach Park	Stockton	134	Not sampled	2
Middle Road Mutual Water Co	Santa Paula	134	Not sampled	0
Canyon Crest Mutual Benefit WC	Arroyo Grande	133	Not sampled	0
Ashford Highlands MWC	Hollister	132	Not sampled	0
Belmont Water Corporation	Fresno	132	Not sampled	0
Cartago Mutual Water Company	Bishop	132	Not sampled	0
Edna Valley Ranch East	Arroyo Grande	132	Not sampled	0
Fcsa 10 - Cumorah Knolls	Fresno	132	Not sampled	0
Kern Valley Mutual Water Company	Lake Isabella	132	Not sampled	2
Sid - Quail Canyon	Vacaville	132	Not sampled	0
Tejon Ranch Main Headquarters	Lebec	132	Not sampled	0
Cassel Park Mutual Water Co	Cassel	131	Not sampled	0
Clear Skies Mobile Home Park	Rancho Cucamonga	131	Not sampled	0
Country Squire Mobile Estates & Water Sy	Oakdale	131	Not sampled	0
Mountain Valley Apts & Rvp	Red Bluff	131	Not sampled	1
Treasure Creek Woods MWC	Trinty Center	131	Not sampled	0
Arroyo Center WC	Greenfield	130	Not sampled	1
Jardines del Valle	Watsonville	130	Not sampled	1
Mobile Villas Trailer Park	Stockton	130	Not sampled	0
Oak Glen Domestic Water	Hemet	130	Not sampled	0

Every utility EPA sampled for PFAS under UCMR 5, any other community system serving 3,300 people or more, and any smaller one with results from 2020 on, from the state. Other systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q3, UCMR 5 and EPA’s 2012 to 2019 compliance results, and California State Water Resources Control Board, Division of Drinking Water.

1,701 to 1,800 of 2,762, by people served

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