PlainWater

Public Water Systems

7,249 active public water systems in CA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.

Population Violations Health Violations Name
System Name Location Population Violations PFAS
Los Angeles Cwwd 40, R 24,27,33-Pearblsm Alhambra, CA 11,509 2 Clean
City of Bell Gardens Downey, CA 11,437 2 Detected
Mendota, City Of Mendota, CA 11,404 29 Clean
Edwards Afb - Main Base Edwards Afb, CA 11,316 23 Clean
Scotts Valley Water District Scotts Valley, CA 11,197 21 Detected
Exeter, City Of Exeter, CA 11,169 38 -
City of Anderson Anderson, CA 11,147 11 Clean
Cal-Water Service Co.-Oroville San Jose, CA 11,106 4 Detected
Tud - Sonora/Jamestown Water System Sonora, CA 11,054 14 Clean
Casitas Municipal Water Dist Oak View, CA 11,005 20 Clean
Sierra Madre-City, Water Dept. Sierra Madre, CA 11,000 26 Clean
Sonoma State University Rohnert Park, CA 10,986 22 Clean
Healdsburg, City Of Healdsburg, CA 10,985 11 Detected
Del Oro Water Co.-Paradise Pines Chico, CA 10,940 16 -
Lawrence Livermore National Lab Site 200 Livermore, CA 10,870 0 Clean
Gswc - Willowbrook Anaheim, CA 10,747 2 Clean
California Institution for Men Chino, CA 10,667 35 Clean
City of Shasta Lake Shasta Lake, CA 10,657 3 Clean
California Water Service Co. - Dixon San Jose, CA 10,623 3 Clean
City of Rio Vista Rio Vista, CA 10,489 13 Clean
Plumas Lake Olivehurst, CA 10,464 4 Clean
Cloverdale, City Of Cloverdale, CA 10,398 24 Clean
Farmersville, City Of Farmersville, CA 10,243 28 Clean
Shasta District Fair Anderson, CA 10,200 36 -
South Mesa WC Calimesa, CA 10,108 14 Detected
Scwa - Arden Park Vista Sacramento, CA 10,101 4 Detected
Valley Water Co. La Canada Flintridge, CA 10,070 4 Clean
Anza Valley Business Mountain Center, CA 10,014 11 -
Cal-Am Water Company - East Pasadena Rosemead, CA 9,949 12 Clean
Green Valley Campground San Bernardino, CA 9,939 0 -
Lake Henshaw Resort Inc. Santa Ysabel, CA 9,913 30 -
Ccwd - Jenny Lind San Andreas, CA 9,861 11 Clean
Golden Hills Csd Tehachapi, CA 9,857 13 Detected
Blythe - City Of Blythe, CA 9,798 23 Clean
Winton Water & Sanitary Dist Winton, CA 9,745 15 Clean
San Gabriel Valley Water Co-Montebello 1 El Monte, CA 9,630 9 Clean
City of Orange Cove Orange Cove, CA 9,525 37 Clean
Myoma Dunes Mutual Water Company Bermuda Dunes, CA 9,445 1 Clean
Georgetown Divide PUD Georgetown, CA 9,434 4 Clean
Huron, City Of Huron, CA 9,306 117 Clean
La Canada Irrigation Dist. La Canada, CA 9,300 5 Clean
City of Live Oak Live Oak, CA 9,285 24 Detected
California State Fair Sacramento, CA 9,280 8 Detected
Placerville, City of - Main Placerville, CA 9,224 5 Clean
Rubio Canon Land & Water Association Altadena, CA 9,215 3 Detected
Paradise Irrigation District Paradise, CA 9,142 21 Clean
Nevada ID - Lake Wildwood Grass Valley, CA 9,108 0 Clean
Tehachapi, City Of Tehachapi, CA 9,094 24 Clean
Ebrpd - del Valle Regional Park Oakland, CA 9,024 28 -
Brecon Estate Templeton, CA 9,012 0 -
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