Public water system · CA3302049
ActiveC21 Anza
At a glance
C21 Anza (PWSID CA3302049) is an active transient non-community water system in Riverside County, California. It reports serving 66 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 1999.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
66
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does C21 Anza compare with other water systems in Riverside County?
By EPA's size categories, C21 Anza is a very small system (500 people or fewer). Riverside County has 197 active public water systems. Its population served is well below the county average of 14,435 people per system, and accounts for less than 0.1% of the 2,843,721 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 C21 Anza is about half of 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 C21 Anza?
EPA lists C21 Anza 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. 130 of the 197 active systems in Riverside County (66%) are also privately owned.
Does C21 Anza have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 1999. The violations listed here began between March 1996 and January 1999. By type: 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). 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 |
|---|---|---|---|---|
| 1999-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
C21 Anza: frequently asked questions
Who runs C21 Anza?
C21 Anza (PWSID CA3302049) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does C21 Anza serve?
C21 Anza reports serving 66 people through 3 service connections in Riverside County, California.
Where does C21 Anza 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 C21 Anza have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 1999. 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 C21 Anza'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; none is health-based, and the most recent began in January 1999. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find C21 Anza's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. C21 Anza 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 Riverside County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Eastern Municipal Wd | Riverside | 666,581 | Community | Purchased surface water |
| Riverside, City of | Riverside | 298,398 | Community | Groundwater under influence of surface water |
| Coachella Vwd: Cove Community | Riverside | 270,000 | Community | Groundwater |
| Elsinore Valley Mwd | Riverside | 169,455 | Community | Surface water |
| Corona, City of | Riverside | 168,575 | Community | Purchased surface water |
| Rancho California Water District | Riverside | 146,147 | 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, “C21 Anza, PWSID CA3302049, California”, https://aquacensus.com/water-systems/california/c21-anza-ca3302049 (data as of October 1, 2026).