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.
| System Name | Location | Population | Violations | PFAS |
| Tecate Supermarket | El Cajon, CA | 25 | 10 | - |
| Apple Water Is Good | Julian, CA | 25 | 11 | - |
| Caltrans, Buckman Springs Rest Area | El Centro, CA | 25 | 13 | - |
| Desert Ironwoods Resort Inc. | Borrego Springs, CA | 25 | 29 | - |
| Manzanita Diner | Pine Valley, CA | 25 | 34 | - |
| Oakoasis Open Space Preserve | San Diego, CA | 25 | 7 | - |
| Ocotillo Wells - Holmes Camp | Borrego Springs, CA | 25 | 4 | - |
| Stevens Motel Water System | Stockton, CA | 25 | 4 | - |
| Olde Towne | Ripon, CA | 25 | 10 | - |
| Country Market | Tracy, CA | 25 | 3 | - |
| Tracy Wildlife Assoc | Tracy, CA | 25 | 5 | - |
| Finleys | Manteca, CA | 25 | 100 | - |
| Lower Sac Plaza | Stockton, CA | 25 | 14 | - |
| California Fruit Processors | Stockton, CA | 25 | 10 | - |
| Waterloo California Restaurant | Stockton, CA | 25 | 18 | - |
| Devil Mountain Wholesale Nursery | San Ramon, CA | 25 | 15 | - |
| River Mill, The | French Camp, CA | 25 | 4 | - |
| Basalite - Tracy | Dixon, CA | 25 | 28 | - |
| Lockeford Springs Golf Course | Acampo, CA | 25 | 36 | - |
| Eusd-Gateway Charter | Escalon, CA | 25 | 4 | - |
| San-I-Pak Inc | Tracy, CA | 25 | 13 | - |
| O-G Packing Co | Stockton, CA | 25 | 45 | - |
| Frank C Alegre Trucking Inc WS | Lodi, CA | 25 | 21 | - |
| McHenry Ave Recreation Area | Oakdale, CA | 25 | 6 | - |
| Enviroplex, Inc | Livermore, CA | 25 | 54 | - |
| Turner Road Vintners (West) | Lodi, CA | 25 | 10 | - |
| Valley Landscaping & Maint Inc | Lodi, CA | 25 | 7 | - |
| Zuckerman Heritage-McDonald | Stockton, CA | 25 | 2 | - |
| Faith Community Church of the Nazarene | Lodi, CA | 25 | 1 | - |
| Bear Creek Community Church | Lodi, CA | 25 | 7 | - |
| Bear Creek Winery | Lodi, CA | 25 | 13 | - |
| Southwinds Church of Tracy | Tracy, CA | 25 | 20 | - |
| Korean Presbyterian Church | Stockton, CA | 25 | 8 | - |
| McLaughlin Waste Equipment Inc | Galt, CA | 25 | 36 | - |
| Home Church, The | Lodi, CA | 25 | 3 | - |
| J B Hunt Transport Inc | Lowell, CA | 25 | 9 | - |
| Austin Industrial Park Water System | Modesto, CA | 25 | 37 | - |
| St Michaels Water System | Stockton, CA | 25 | 12 | - |
| Down River an Itw Company | Stockton, CA | 25 | 22 | - |
| Morada Produce | Linden, CA | 25 | 1 | - |
| Victoria Island Farms | Holt, CA | 25 | 2 | - |
| St Patrick Catholic Church Wtr Sys | Ripon, CA | 25 | 6 | - |
| Woodbridge Pizza Water System | Woodbridge, CA | 25 | 4 | - |
| Lockeford Holdings Water District LLC | La Jolla, CA | 25 | 20 | - |
| Lovelace Transfer Station | Stockton, CA | 25 | 4 | - |
| Old River Golf Course | Tracy, CA | 25 | 8 | - |
| Biglieri Farm Market | Clements, CA | 25 | 11 | - |
| Gico Valley Farms | Ripon, CA | 25 | 6 | - |
| Prima Frutta Packing | Linden, CA | 25 | 2 | - |
| Clements Ridge Produce | Clements, CA | 25 | 2 | - |