Tap WaterIndex

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Tap water quality report

California

Across California's 3,059 community water suppliers, 0.9% exceed the EPA lead action level and 23.6% have detectable PFAS.

0.9%
exceed lead action level
(28/3000 suppliers)
23.6%
PFOA/PFOS detected
(163/690 suppliers)
3,059
water suppliers
Lead by supplier PFAS by supplier

Largest water suppliers

Lead is the LCR 90th-percentile result; a value above 0.015 mg/L exceeds the EPA action level. “—” means no lead sample is on file for that supplier.
SupplierCityPopulationLead (p90)
Los Angeles-City, Dept. of Water & Power Los Angeles 3,875,566 0.0039 mg/L
East Bay Mud — 1,442,800 0.0000 mg/L
San Diego, City of San Diego 1,385,379 0.0000 mg/L
San Jose Water San Jose 1,039,920 0.0000 mg/L
Sfpuc City Distribution Division — 848,019 0.0000 mg/L
Eastern Municipal Wd Perris 666,581 0.0028 mg/L
City of Fresno Fresno 545,716 0.0000 mg/L
City of Sacramento Main Sacramento 527,979 0.0000 mg/L
Long Beach Utilities Department Long Beach 466,772 0.0010 mg/L
Irvine Ranch Water District Irvine 444,800 0.0000 mg/L
City of Anaheim Anaheim 348,593 0.0000 mg/L
Alameda County Water District Fremont 344,000 0.0000 mg/L
City of Santa Ana Santa Ana 310,539 0.0000 mg/L
Riverside, City of Riverside 298,398 0.0010 mg/L
Santa Clarita Valley Water Agency Newhall 294,090 0.0000 mg/L
Gswc - Southwest Hawthorne 277,740 0.0000 mg/L
Helix Water District La Mesa 277,668 0.0000 mg/L
Coachella Vwd: Cove Community Palm Desert 270,000 0.0000 mg/L
Cws - Bakersfield — 267,881 0.0028 mg/L
San Gabriel Valley Water Co.-El Monte El Monte 248,000 0.0000 mg/L
Otay Water District Spring Valley 238,008 0.0000 mg/L
San Gabriel Valley Wc - Fontana Fontana 237,700 0.0000 mg/L
Modesto, City of Modesto 218,771 0.0120 mg/L
San Bernardino City San bernardin0 214,665 0.0000 mg/L
Cucamonga Valley Water District Rancho Cucuamonga 211,069 0.0000 mg/L
Los Angeles Cwwd 40 Reg 4 & 34 Lancaster Alhambra 208,129 0.0018 mg/L
City of Huntington Beach Huntington Beach 201,000 0.0000 mg/L
Oxnard Water Dept Oxnard 200,232 0.0000 mg/L
Contra Costa Water District Concord 198,000 0.0031 mg/L
Sacramento Suburban Water District Sacramento 194,444 0.0000 mg/L
City of Stockton Stockton 191,302 0.0000 mg/L
Sweetwater Authority Chula Vista 191,282 0.0000 mg/L
Glendale-City, Water Dept. Glendale 188,784 0.0000 mg/L
Marin Municipal Water District Corte Madera 186,895 0.0000 mg/L
Ontario Municipal Utilities Company Ontario 185,010 0.0006 mg/L
Scwa - Laguna/Vineyard Sacramento 184,896 0.0000 mg/L
California Water Service - Stockton — 176,266 0.0000 mg/L
Santa Rosa, City of Santa Rosa 175,396 0.0013 mg/L
City of Garden Grove Garden Grove 174,226 0.0000 mg/L
Oceanside, City of Oceanside 171,483 0.0000 mg/L
Moulton Niguel Water District Laguna Hills 170,236 0.0000 mg/L
Elsinore Valley Mwd Lake Elsinore 169,455 0.0013 mg/L
Suburban Water Systems-San Jose Covina 168,843 0.0000 mg/L
Corona, City of Corona 168,575 0.0037 mg/L
Santa Margarita Water District Rancho Santa Margarita 168,289 0.0000 mg/L
Pasadena Water and Power Pasadena 164,344 0.0000 mg/L
City of Hayward Hayward 162,954 0.0000 mg/L
Bakersfield, City of Bakersfield 160,144 0.0013 mg/L
City of Sunnyvale Sunnyvale 157,566 0.0000 mg/L
City of Roseville Roseville 155,612 0.0000 mg/L
California Water Service Co. - Ela — 152,474 0.0000 mg/L
Pomona - City, Water Dept. Pomona 151,713 0.0021 mg/L
Cws - Visalia — 148,496 0.0000 mg/L
Rancho California Water District Temecula 146,147 0.0000 mg/L
California Water Service Co. - Dominguez — 143,996 0.0018 mg/L
City of Fullerton Fullerton 139,461 0.0015 mg/L
Escondido, City of Escondido 137,044 0.0011 mg/L
Victorville Water District Victorville 135,983 0.0000 mg/L
Jurupa Community Sd Jurupa Valley 135,093 0.0000 mg/L
Vista Irrigation District Vista 132,430 0.0000 mg/L
El Dorado Id - Main Placerville 132,171 0.0000 mg/L
City of Santa Clara Santa Clara 130,746 0.0027 mg/L
City of Clovis Clovis 130,130 0.0000 mg/L
Palmdale Water Dist. Palmdale 126,804 0.0000 mg/L
Cwsc Salinas — 123,679 0.0012 mg/L
City of Vallejo Vallejo 121,420 0.0000 mg/L
City of Orange Orange 120,770 0.0023 mg/L
City of Fairfield Fairfield 120,377 0.0000 mg/L
City of Antioch Antioch 115,074 0.0000 mg/L
Cal-Water Service Co.-Chico — 114,925 0.0000 mg/L
Golden State Wc - West Orange County Anaheim 114,379 0.0022 mg/L
Vallecitos Wd San Marcos 113,500 0.0000 mg/L
Ventura Water Department Ventura 113,500 0.0000 mg/L
Downey - City, Water Dept. Downey 110,556 0.0000 mg/L
Great Oaks Wc Inc San Jose 110,088 0.0000 mg/L
Azusa Light and Water Azusa 110,044 0.0000 mg/L
Mesa Water District — 110,000 0.0000 mg/L
San Bernardino Valley Wd San Bernardino 109,608 —
City of Santa Maria Utilities Department Santa Maria 109,477 0.0000 mg/L
East Valley Water District Highland 108,629 0.0000 mg/L
Torrance-City, Water Dept. Torrance 106,183 0.0000 mg/L
Cal-Am Water Coronado Imperial Beach 106,000 0.0020 mg/L
Burbank-City, Water Dept. Burbank 105,603 0.0008 mg/L
City of Daly City Daly City 104,901 0.0000 mg/L
West Valley Water District Rialto 104,498 0.0000 mg/L
California Water Service - San Mateo — 102,348 0.0044 mg/L
City of San Jose - Evg/Edv/Coy San Jose 101,265 0.0000 mg/L
Walnut Valley Water District Walnut 100,941 0.0000 mg/L
Hesperia Wd Hesperia 100,744 0.0000 mg/L
South Tahoe Pud - Main South Lake Tahoe 100,000 0.0000 mg/L
City of Vacaville Vacaville 99,650 0.0000 mg/L
City of Santa Barbara Water Department Santa Barbara 99,323 0.0000 mg/L
Dublin San Ramon Services District Pleasanton 98,776 0.0000 mg/L
California Water Service Co. - Herm/Redo — 96,853 0.0014 mg/L
Tracy, City of Tracy 96,609 0.0000 mg/L
Carlsbad Mwd Carlsbad 95,158 0.0000 mg/L
Ventura Wwd No. 8 - Simi Valley Simi Valley 94,738 0.0000 mg/L
Santa Cruz Water Department Santa Cruz 94,626 0.0000 mg/L
Padre Dam Mwd Santee 93,980 0.0011 mg/L
City of Merced Merced 93,692 0.0000 mg/L