Public water system · CA3901238
ActiveMokelumne Beach Rv Park
At a glance
Mokelumne Beach Rv Park (PWSID CA3901238) is an active transient non-community water system in San Joaquin County, California. It reports serving 30 people through 34 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in May 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
30
Service connections
34
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mokelumne Beach Rv Park compare with other water systems in San Joaquin County?
By EPA's size categories, Mokelumne Beach Rv Park 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 transient non-community water system reports serving 144 people, so Mokelumne Beach Rv Park is well below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. California has 3,016 active transient non-community water systems, 40% 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 Mokelumne Beach Rv Park?
EPA lists Mokelumne Beach Rv Park as privately owned. 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. 225 of the 302 active systems in San Joaquin County (75%) are also privately owned.
Does Mokelumne Beach Rv Park have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in May 2005. By type: 1 monitoring and reporting. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 2005-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
The one violation in EPA's records.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.
Mokelumne Beach Rv Park: frequently asked questions
Who runs Mokelumne Beach Rv Park?
Mokelumne Beach Rv Park (PWSID CA3901238) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Mokelumne Beach Rv Park serve?
Mokelumne Beach Rv Park reports serving 30 people through 34 service connections in San Joaquin County, California.
Where does Mokelumne Beach Rv Park 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 Mokelumne Beach Rv Park have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in May 2005. 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 Mokelumne Beach Rv Park'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 one violation for this system; it is not health-based, and the most recent began in May 2005. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Mokelumne Beach Rv Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mokelumne Beach Rv Park is a 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, “Mokelumne Beach Rv Park, PWSID CA3901238, California”, https://aquacensus.com/water-systems/california/mokelumne-beach-rv-park-ca3901238 (data as of October 1, 2026).