Tap Truth EPA drinking water records, in plain English

County drinking water records

San Joaquin County, CA drinking water systems

93 community water systems serve San Joaquin County, CA, reporting 741,611 people served in all.

18 of them (19%) had at least one health-based violation in the last 10 years. 6 systems still have one unresolved.

80 rely mainly on groundwater and 13 on surface water, counting water bought from other systems.

91 systems filed a lead service line inventory listing 0 lead lines, 0 galvanized lines that must be replaced and 39,932 lines of unknown material.

1 more system is placed in San Joaquin County, CA by the county its records name because it has no service area map that lines up with its own records, so it is listed apart and not counted here.

Community water systems
93
People served, sum of each system's own figure
741,611
Systems with a health-based violation, last 10 years
18
Systems with one unresolved
6
Lead service lines in inventories
0

Water systems serving San Joaquin County

93 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Stockton Stockton 191,302 Surface water 2 0 No inventory
California Water Service - Stockton Stockton, Garden Acres and 4 more 176,266 Purchased surface water 0 0 0
City of Tracy Tracy 96,609 Surface water 0 0 0
City of Manteca Manteca 84,928 Purchased surface water 0 0 0
City of Lodi Lodi 68,272 Surface water 0 0 0
City of Lathrop Lathrop 35,080 Purchased surface water 0 0 0
City of Mountain House Mountain House 24,948 Surface water 0 0 0
City of Ripon Ripon 15,741 Groundwater 0 0 0
City of Escalon Escalon 7,429 Groundwater 0 0 0
San Joaquin County - Lincoln Village Lincoln Village 5,841 Purchased surface water 0 0 0
CDCR California Health Care Facility Manteca and Stockton 5,551 Purchased surface water 3 0 0
San Joaquin County-Mokelumne Acres Lathrop 3,802 Groundwater 0 0 0
Lockeford Community Serv. Dist. Lockeford 3,572 Groundwater 0 0 0
San Joaquin County - Colonial Heights Outside cities and towns 1,841 Purchased surface water 0 0 0
Linden County Water District Linden 1,784 Groundwater 0 0 0
Little Potato Slough Mutual Terminous 1,510 Surface water 4 0 0
Oakwood Lake Water District-Subdivision Outside cities and towns 1,479 Groundwater 0 0 0
Fairoaks PWS #44 Outside cities and towns 1,172 Groundwater 0 0 0
San Joaquin County-Raymus Village Outside cities and towns 1,086 Groundwater 9 0 0
San Joaquin County - Thornton Thornton 964 Groundwater 0 0 0
San Joaquin County - Wilkinson Manor Morada 851 Groundwater 0 0 0
Stockton Verde Mobile Home Park Outside cities and towns 711 Groundwater 0 0 0
San Joaquin River Club Inc Outside cities and towns 600 Groundwater 0 0 0
Morada Estates N PWS #46 Morada 426 Groundwater 0 0 0
Arbor Mobile Home Park WS Outside cities and towns 340 Groundwater 0 0 0
Bel Air Mobile Estate Outside cities and towns 325 Groundwater 0 0 0
Double L Mobile Estates Lockeford 320 Groundwater 0 0 0
Santos Ranch PWS #5-CSA #35 Outside cities and towns 320 Groundwater 0 0 0
San Joaquin Water Works #2 Victor 310 Groundwater 0 0 0
Morehead Park Outside cities and towns 300 Groundwater 0 1 0
Sahara Mobile Court August 300 Groundwater 0 0 0
Morada Estates PWS Morada 290 Groundwater 0 0 0
Mapache Trailer Park Outside cities and towns 275 Groundwater 0 0 0
Farmington Water Company Farmington 270 Groundwater 0 0 0
Clements Water Works #43 Outside cities and towns 264 Groundwater 0 0 0
132 Investments Water System Outside cities and towns 252 Groundwater 1 0 0
Shaded Terrace PWS Morada 238 Groundwater 0 0 0
Twin Oaks Mobile Park Outside cities and towns 238 Groundwater 0 0 0
King Island Trailer Park Water System Outside cities and towns 236 Groundwater 0 0 0
Elkhorn Estates Water System Outside cities and towns 234 Groundwater 0 0 0
Acampo Water System Acampo 231 Groundwater 0 0 0
San Juan Vista Stockton 201 Groundwater 0 0 0
Villa Cerezos Outside cities and towns 200 Groundwater 0 0 0
Tahama Village Mobile Home Park Morada 200 Groundwater 0 0 0
Caribou Mobile Park PWS Outside cities and towns 180 Groundwater 0 0 0
Gayla Manor PWS Morada 178 Groundwater 0 0 0
Par Country Estates CSA-16 Outside cities and towns 178 Groundwater 0 0 0
Rancho San Joaquin Water Sys Outside cities and towns 172 Groundwater 0 0 0
IL Vineto Outside cities and towns 160 Groundwater 0 0 0
Islander Marina Outside cities and towns 150 Groundwater 0 0 0
Shady Rest Trailer Court Outside cities and towns 150 Groundwater 0 0 0
Fairway Estates PWS CSA-18 Woodbridge 149 Groundwater 0 0 0
Currier Estates Water Corp Outside cities and towns 148 Groundwater 0 0 0
Corral Hollow PWS Outside cities and towns 145 Groundwater 0 0 0
Country Squire Mobile Estates & Water Sy Outside cities and towns 131 Groundwater 0 0 0
Mobile Villas Trailer Park Outside cities and towns 130 Groundwater 0 0 0
New Hope Landing General Store Outside cities and towns 125 Groundwater 0 0 0
Wilkinson Manor A-Zone PWS Morada 125 Purchased groundwater 0 0 0
Lockeford Mobile Home Park Wtr Sys Lockeford 123 Groundwater 0 0 0
Big Wheel Mobile Home Park Garden Acres 120 Groundwater 1 0 0
Spring Creek Estates PWS Outside cities and towns 119 Groundwater 0 0 0
Morada Manor Water System Morada 112 Groundwater 0 0 0
Walnut Acres Outside cities and towns 106 Groundwater 0 0 0
Morada Acres Water System Morada 105 Groundwater 0 0 0
Lodi Lake Mobile Home Park Woodbridge 104 Groundwater 0 0 0
Glenwood Mobile Home Park Outside cities and towns 100 Groundwater 2 2 No inventory
Haven Acres River Club Inc Outside cities and towns 100 Groundwater 0 0 0
Cherry Lane Trailer Park Outside cities and towns 100 Groundwater 0 0 0
Maurland Manor Water System Outside cities and towns 92 Purchased groundwater 0 0 0
A1 Winstons Mobile Home Park Outside cities and towns 75 Groundwater 1 2 0
Country Club Vista Mutual Water Co Woodbridge 75 Groundwater 0 0 0
Country Manor MHP Outside cities and towns 75 Groundwater 0 0 0
Wayside Motel Apartments Wtr Sys Outside cities and towns 70 Groundwater 0 0 0
Sunnyside Estates Water System Outside cities and towns 69 Purchased surface water 0 0 0
Almond Park Water System Morada 60 Groundwater 0 0 0
El Rio Mobile Home Park Outside cities and towns 60 Groundwater 0 0 0
Finnlees Trailer Park Outside cities and towns 55 Groundwater 0 0 0
Mokelumne Mobile Senior Park Outside cities and towns 55 Groundwater 1 2 0
Riverside Mobile Home Park Outside cities and towns 55 Groundwater 2 0 0
Century Mobile Home Park Outside cities and towns 50 Groundwater 34 0 0
B&G Mobile Home Park LLC WS Collierville 50 Groundwater 0 0 0
Stockton East Water District Outside cities and towns 50 Surface water 0 0 0
Haynes Board & Care Home Outside cities and towns 41 Groundwater 1 0 0
Wine Country Apartments Outside cities and towns 40 Groundwater 0 0 0
La Torres Park Tracy 40 Groundwater 1 2 0
Lodi Homes Outside cities and towns 39 Groundwater 0 0 0
Enclave at the Delta Outside cities and towns 39 Groundwater 0 0 0
Fremont One Garden Acres 39 Groundwater 15 0 0
Hanot Foundation Inc Outside cities and towns 38 Groundwater 0 0 0
V & P Trailer Court Water System Kennedy 35 Groundwater 5 0 0
Sunny Road Water System Outside cities and towns 34 Groundwater 36 0 0
Cardoza Villa Corp Outside cities and towns 30 Groundwater 1 2 0
Martinez Apartments French Camp 26 Groundwater 23 0 0

Systems placed by county record in San Joaquin County

1 system

EPA has no service area map for this system. It is placed by the county its records name (the counties EPA lists it serving, or the county coded in its ID where EPA lists none), and without a map it is not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Thomas Shaft Wholesale County on record 1 Purchased surface water 0 0 0

Cities and towns in San Joaquin County

25 places

Back to California

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations