Public water system · CA3910701

Active

Defense Distrib. Depot, Sharpe Site

At a glance

Defense Distrib. Depot, Sharpe Site (PWSID CA3910701) is an active non-transient non-community water system in San Joaquin County, California. It reports serving 500 people through 66 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in January 2011.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

500

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDCA3910701

System typeNon-transient non-community water system

Activity statusActive

Population served500

Service connections66

Primary water sourceGroundwater

Owner typeFederal government

Primacy agencyCA state drinking water program

City served—

StateCalifornia

ZIP—

CountySan Joaquin County

How does Defense Distrib. Depot, Sharpe Site compare with other water systems in San Joaquin County?

By EPA's size categories, Defense Distrib. Depot, Sharpe Site 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 non-transient non-community water system reports serving 430 people, so Defense Distrib. Depot, Sharpe Site is about 16% above that figure.

What does “non-transient non-community water system” mean?

A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. California has 1,466 active non-transient non-community water systems, 20% of the state's 7,479 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.

Who owns and regulates Defense Distrib. Depot, Sharpe Site?

EPA lists Defense Distrib. Depot, Sharpe Site as owned by the federal 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. 4 of the 302 active systems in San Joaquin County (1.3%) are also owned by the federal government.

Does Defense Distrib. Depot, Sharpe Site have drinking water violations?

EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in January 2011. The violations listed here began between May 1993 and January 2011. By type: 4 contaminant level above the legal limit, 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 8 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
2011-01-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
2010-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Arseniccode 1005	Yes	Resolved
2008-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Arseniccode 1005	Yes	Resolved
2008-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Arseniccode 1005	Yes	Resolved
1999-11-01	Public notice, recordkeeping or otherNotification, State · code 05	Total coliform bacteria (TCR)code 3100	No	Resolved
1995-11-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1995-10-01	Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26	Total coliform bacteria (TCR)code 3100	No	Resolved
1993-05-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved

All 8 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.

Defense Distrib. Depot, Sharpe Site: frequently asked questions

Who runs Defense Distrib. Depot, Sharpe Site?

Defense Distrib. Depot, Sharpe Site (PWSID CA3910701) is a non-transient non-community water system owned by the federal government. It is regulated by the CA state drinking water program.

How many people does Defense Distrib. Depot, Sharpe Site serve?

Defense Distrib. Depot, Sharpe Site reports serving 500 people through 66 service connections in San Joaquin County, California.

Where does Defense Distrib. Depot, Sharpe Site get its water?

EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.

Does Defense Distrib. Depot, Sharpe Site have any drinking water violations?

EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in January 2011. 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 Defense Distrib. Depot, Sharpe Site'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 8 violations for this system; 4 are health-based, and the most recent began in January 2011. For current results, consult EPA ECHO, or the CA state drinking water program.

Where can I find Defense Distrib. Depot, Sharpe Site's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Defense Distrib. Depot, Sharpe Site is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.

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, “Defense Distrib. Depot, Sharpe Site, PWSID CA3910701, California”, https://aquacensus.com/water-systems/california/defense-distrib-depot-sharpe-site-ca3910701 (data as of October 1, 2026).