Public water system · CA3910006
ActiveStockton East Water District
At a glance
Stockton East Water District (PWSID CA3910006) is an active community water system in San Joaquin County, California. It reports serving 50 people through 3 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
3
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Stockton East Water District compare with other water systems in San Joaquin County?
By EPA's size categories, Stockton East Water District is a very small system (500 people or fewer). San Joaquin County has 302 active public water systems. Its population served is well below the county average of 2,571 people per system, and accounts for less than 0.1% of the 776,334 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so Stockton East Water District is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. California has 2,997 active community water systems, 40% of the state's 7,479 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates Stockton East Water District?
EPA lists Stockton East Water District as owned by a local government. The CA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 69 of the 302 active systems in San Joaquin County (23%) are also owned by a local government.
Does Stockton East Water District have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2013. The violations listed here began between July 1993 and July 2013. By type: 1 required treatment not met and 1 monitoring and reporting. The contaminants or rules involved are Carbon, total and Lead and Copper Rule. EPA lists 2 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2013-07-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 2 violations in EPA's records, newest first. Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Stockton East Water District: frequently asked questions
Who runs Stockton East Water District?
Stockton East Water District (PWSID CA3910006) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Stockton East Water District serve?
Stockton East Water District reports serving 50 people through 3 service connections in San Joaquin County, California.
Where does Stockton East Water District get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Stockton East Water District have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2013. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Stockton East Water District's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Stockton East Water District's water quality report?
As a community water system, Stockton East Water District must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in San Joaquin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Stockton | San Joaquin | 191,302 | Community | Surface water |
| California Water Service - Stockton | San Joaquin | 176,266 | Community | Purchased surface water |
| Tracy, City of | San Joaquin | 96,609 | Community | Surface water |
| Manteca, City of | San Joaquin | 84,928 | Community | Purchased surface water |
| Lodi, City of | San Joaquin | 68,272 | Community | Surface water |
| City of Lathrop | San Joaquin | 35,080 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Stockton East Water District, PWSID CA3910006, California”, https://aquacensus.com/water-systems/california/stockton-east-water-district-ca3910006 (data as of October 1, 2026).