TapWaterMap

CA / Stockton

CA · Tap water records

Stockton tap water, in plain English

Here is what the EPA's own data shows about tap water in Stockton. According to EPA SDWIS data retrieved June 2026, Stockton is served by 69 active community water systems, together reported to serve about 223,456 people.

As of June 2026, EPA records show 506 violations across the community water system(s) serving Stockton, going back to the earliest EPA record. 210 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.

What the EPA has on record, by system

City Of Stockton

191,302 served · surface water · PWSID CA3910012

San Joaquin County - Lincoln Village

5,841 served · surface water · PWSID CA3910010

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Cdcr California Health Care Facility

5,551 served · surface water · PWSID CA3910803

San Joaquin County-Mokelumne Acres

3,802 served · groundwater · PWSID CA3910017

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

San Joaquin County - Colonial Heights

1,841 served · surface water · PWSID CA3910002

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Oakwood Lake Water District-Subdivision

1,479 served · groundwater · PWSID CA3910023

Fairoaks Pws #44

1,172 served · groundwater · PWSID CA3901348

San Joaquin County-Raymus Village

1,086 served · groundwater · PWSID CA3910014

San Joaquin County - Thornton

964 served · groundwater · PWSID CA3910009

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

San Joaquin County - Wilkinson Manor

851 served · groundwater · PWSID CA3910024

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Stockton Verde Mobile Home Park

711 served · groundwater · PWSID CA3910020

Morada Estates N Pws #46

426 served · groundwater · PWSID CA3901337

Bel Air Mobile Estate

325 served · groundwater · PWSID CA3900907

Santos Ranch Pws #5-Csa #35

320 served · groundwater · PWSID CA3901216

San Joaquin Water Works #2

310 served · groundwater · PWSID CA3901092

Morada Estates Pws

290 served · groundwater · PWSID CA3900722

Peppermint Creek Mhp

280 served · surface water · PWSID CA5500116

Rough & Ready Village

268 served · groundwater · PWSID CA2900530

Clements Water Works #43

264 served · groundwater · PWSID CA3900504

Cal 20 Village And Meadow Pointe Park

255 served · groundwater · PWSID CA1700595

Shaded Terrace Pws

238 served · groundwater · PWSID CA3900720

Twin Oaks Mobile Park

238 served · groundwater · PWSID CA3901074

King Island Trailer Park Water System

236 served · groundwater · PWSID CA3901114

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Elkhorn Estates Water System

234 served · groundwater · PWSID CA3900724

Acampo Water System

231 served · groundwater · PWSID CA3901303

Capell Valley Estates

208 served · surface water · PWSID CA2800543

Casa De Amigos Manufactured Housing Comm

204 served · groundwater · PWSID CA5000060

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

San Juan Vista

201 served · groundwater · PWSID CA3901215

Bethel Island Mhc

185 served · groundwater · PWSID CA0707575

Caribou Mobile Park Pws

180 served · groundwater · PWSID CA3900568

Gayla Manor Pws

178 served · groundwater · PWSID CA3900563

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Par Country Estates Csa-16

178 served · groundwater · PWSID CA3901172

Western Mobile Home Park

178 served · groundwater · PWSID CA4900791

Rancho San Joaquin Water Sys

172 served · groundwater · PWSID CA3900558

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Plaza Mobile Home Park

169 served · groundwater · PWSID CA4900787

Security Mhp

150 served · groundwater · PWSID CO0121750

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Fairway Estates Pws Csa-18

149 served · groundwater · PWSID CA3901075

Mulberry Mhp

148 served · groundwater · PWSID CA5000072

Corral Hollow Pws

145 served · groundwater · PWSID CA3900702

Gold Beach Park

134 served · groundwater · PWSID CA0900102

Mobile Villas Trailer Park

130 served · groundwater · PWSID CA3901081

Wilkinson Manor A-Zone Pws

125 served · groundwater · PWSID CA3901159

Quiet Oaks Mobile Home Park

120 served · groundwater · PWSID CA3701341

Big Wheel Mobile Home Park

120 served · groundwater · PWSID CA3900637

Amberwood Estates, Llc

120 served · groundwater · PWSID CA4500200

Spring Creek Estates Pws

119 served · groundwater · PWSID CA3900927

Morada Manor Water System

112 served · groundwater · PWSID CA3900523

Del Rio East Hoa Water System

110 served · groundwater · PWSID CA5000099

Walnut Acres

106 served · groundwater · PWSID CA3901113

Morada Acres Water System

105 served · groundwater · PWSID CA3900512

Cherry Lane Trailer Park

100 served · groundwater · PWSID CA3900983

Desert Mobile Home Estates

100 served · groundwater · PWSID OR4101138

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Maurland Manor Water System

92 served · groundwater · PWSID CA3900543

A1 Winstons Mobile Home Park

75 served · groundwater · PWSID CA3900606

Wayside Motel Apartments Wtr Sys

70 served · groundwater · PWSID CA3900835

Sunnyside Estates Water System

69 served · surface water · PWSID CA3900714

Mary Lou Mobile Home Park

68 served · groundwater · PWSID CA1000265

Evergreen Mobile Estates

65 served · groundwater · PWSID CA4900728

Forest Point Mhc

62 served · groundwater · PWSID CA0300024

Oakmont Water System

61 served · surface water · PWSID CA4300526

Almond Park Water System

60 served · groundwater · PWSID CA3900517

El Rio Mobile Home Park

60 served · groundwater · PWSID CA3900569

Reno Sahara Trailer Park

60 served · groundwater · PWSID NV0000701

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

15th Avenue

50 served · groundwater · PWSID CA1600293

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Stockton East Water District

50 served · surface water · PWSID CA3910006

Wine Country Apartments

40 served · groundwater · PWSID CA3900559

Enclave At The Delta

39 served · groundwater · PWSID CA3901304

Fremont One

39 served · groundwater · PWSID CA3901474

V & P Trailer Court Water System

35 served · groundwater · PWSID CA3900732

What this means

A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.

This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.

Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.