COUNTY WATER-SYSTEM LEDGER
San Joaquin, California
EPA’s September 2026 export lists 13 active community water systems serving San Joaquin, California, with 0 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving San Joaquin, California
EPA associates 13 covered systems with San Joaquin, California; their reported population-served values total 719,341 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| City Of StocktonCA3910012 | 191,302 | Surface water | No current violation flagged |
| California Water Service - StocktonCA3910001 | 176,266 | Surface water purchased | No current violation flagged |
| Tracy, City OfCA3910011 | 96,609 | Surface water | No current violation flagged |
| Manteca, City OfCA3910005 | 84,928 | Surface water purchased | No current violation flagged |
| Lodi, City OfCA3910004 | 68,272 | Surface water | No current violation flagged |
| City Of LathropCA3910015 | 35,080 | Surface water purchased | No current violation flagged |
| City Of Mountain HouseCA3910027 | 24,948 | Surface water | No current violation flagged |
| Ripon, City OfCA3910007 | 15,741 | Ground water | No current violation flagged |
| Escalon, City OfCA3910003 | 7,429 | Ground water | No current violation flagged |
| San Joaquin County - Lincoln VillageCA3910010 | 5,841 | Surface water purchased | No current violation flagged |
| Cdcr California Health Care FacilityCA3910803 | 5,551 | Surface water purchased | No current violation flagged |
| San Joaquin County-Mokelumne AcresCA3910017 | 3,802 | Ground water | No current violation flagged |
| Lockeford Community Serv. Dist.CA3910008 | 3,572 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for San Joaquin, California
EPA classifies 13 systems serving San Joaquin, California across 3 primary-source categories; Surface water is the largest category with 4 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.