California: Water Systems with Most Health Violations

2382 water systems in California have at least one health-based violation on record. The system with the most health-based violations is Cal Am - Oakhurst in Sacramento with 368 health-based violations. Health-based violations mean a system exceeded an EPA maximum contaminant level or failed required treatment standards.

Water SystemCityPopulationHealth ViolationsTotal Violations
Cal Am - Oakhurst Sacramento3,693 368369
Cal Am - Raymond Sacramento343 364365
Csa 70 W-4 Pioneertown San Bernardino470 284296
Grindstone Rancheria Elk Creek150 2341,142
Calico Ghost Town San Bernardino24,623 224229
Saucelito Elementary School Terra Bella87 222262
North Edwards Wd North Edwards1,105 203224
US Army Fort Irwin Fort Irwin15,701 180183
Del Oro River Island Serv Terr #1 Chico1,280 176212
Pappas & Co (Mendota) Fresno36 176179
Harris Farms Headquarters Coalinga140 174180
City of Lindsay Linsday12,659 173175
Colusa Co. Wwd #1 - Grimes Grimes512 135152
Ironwood Camp Newberry Springs210 134150
Arvin Community Services Dist Arvin19,669 133254
Waukena Elementary School Tulare220 132153
Lone Pine Oasis Valley Center49 124175
Kettleman City Csd Kettleman City1,242 120133
Caruthers Comm Serv Dist Caruthers2,613 120129
Lanare Community Services Dist Coalinga540 120125
City of Lemoore Lemoore27,185 119136
Knoll Enterprises Ludlow500 119129
Land Projects Mutual Water Co. Lancaster2,800 117368
California Citrus Association Exeter96 115137
Bar-Len Mwc Barstow126 114118
Pauma Valley Water Company Pauma Valley185 111146
Keyes Community Services Dist. Keyes5,672 110110
Forest Springs Boulder Creek385 109118
Harris Feeding Company Coalinga203 108114
Valley Ford Water Association Valley Ford88 108114
Kings Inn Motel Glendora129 108111
Nps-Wolverton Three Rivers2,940 107117
Las Cumbres Mutual Water Co Los Gatos402 107111
Riverdale Public Utility District Riverdale2,756 104112
Mcwane Plant and Industrial, LLC Exeter105 102108
Quiet Oaks Mobile Home Park Stockton120 101107
Caillier Water System Boron1,008 99102
Maher Mutual Water Company Bakersfield140 98116
Madera Co Md1-Hidden Lake Estates Madera162 9899
Sierra Linda Mutual Water Co North Fork200 9798
Alpaugh Community Services District Alpaugh871 96110
Western Valley Meat Company Fresno815 95100
Bridgeport Pud Bridgeport524 93158
Frazier Nut Farms, Inc. Waterford64 9292
Lsid - Tonyville Lindsay500 9097
Rainbird Valley Mwc Weldon238 9094
Mckee Bridge Mobile Home Park Encinitas40 88203
Md 42 Still Meadow Madera100 8792
Surfwood Mutual Water Corporation Mendocino160 8787
Grange Hall Ws Salinas25 8787
R.S. Mutual Water Company Wofford Heights67 8693
Indian Oaks Trailer Park Murrieta70 8692
Csa 70 W-3 Hacienda San Bernardino611 8586
Jireh Packing Company-Orange Cove Orange Cove120 8486
Csa 70-F Morongo San Bernardino300 8484
Uc Desert Research and Extension Center Holtville30 8388
Encinal Rd Ws #01 Salinas91 8386
Sonoma County Mutual Water Company San Francisco40 8383
Dollar General Store 14889 San Diego250 82128
Sierra Vista Association Clovis43 8290
Harris Farms South 101-144 Coalinga182 8286
Boron Csd Boron2,086 80114
Moro Rd Ws #09 Salinas210 7878
Washington School Ws Salinas250 7794
Kern Mobile Estates LLC Los Angeles73 7690
Md 07 Marina View Heights Madera200 7681
Laguna Seca Recreation Ws Salinas1,248 7680
City of Hughson Hughson7,481 7577
Madera Co Sa16 Sumner Hill Madera135 7577
Greenfield County Wd Bakersfield11,590 7487
Hope Elementary School Porterville255 7480
Rim Rock Water Company Grover Beach55 7478
Twin Lakes Resort Potrero400 7289
Golden State Water Co. - Robbins Rancho Cordova205 7281
Harris Farms/Horse Barn Coalinga98 7278
Mettler Valley Mutual Lancaster160 7275
Armona Community Services Dist Armona4,143 7177
Md 06 Lake Shore Park Madera148 7176
Seeley Cwd Seeley1,729 6976
Sierra Lodge Three Rivers52 6771
Round Mountain Water Company Bakersfield50 6684
Sierra Mutual Water Company Porterville43 6684
Akal Travel Plaza Delano88 6678
South Bay Rod & Gun Club Inc. San Diego18,900 6666
Nacimiento Water Company Bradley2,181 65104
Howell Mountain Mutual Water Company Angwin1,240 6578
Foster Farms Delhi Feedmill Collier Road Delhi244 6468
Los Gatos Tomato Products Huron219 6466
Lake Isabella Koa Campground Templeton280 6464
Lhoist North America Ws Salinas44 6464
Live Oak Child Care Center Live Oak108 6370
Stockton Baptist Church Stockton78 6266
Lemoore Naval Air Station Lemoore15,000 6262
Two Twenty Four Mobile Home Pk Clovis35 6187
Rand Communities Water District Johanesburg303 6174
Del Oro Grandview Gardens District Chico323 6162
Aptco LLC Delano50 6076
Panoche Water District Firebaugh220 6068
El Camino Wc Inc Salinas133 6066
Lancaster Park Mobile Home Park Lancaster60 6066