Public water system · MO3010124
ActiveCalifornia Pws
At a glance
California Pws (PWSID MO3010124) is an active community water system in Moniteau County, Missouri. It reports serving 4,423 people through 2,127 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,423
Service connections
2,127
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does California Pws compare with other water systems in Moniteau County?
By EPA's size categories, California Pws is a medium system (3,301 to 10,000 people). Moniteau County has 11 active public water systems, and California Pws is the largest of them by population served. Its population served is about 4.9 times the county average of 899 people per system, and accounts for 45% of the 9,892 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active community water system reports serving 6,703 people, so California Pws is about 34% 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. Missouri has 1,612 active community water systems, 55% of the state's 2,943 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,521 Missouri systems (86%) list groundwater as their primary source.
Who owns and regulates California Pws?
EPA lists California Pws as owned by a local government. The MO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 7 of the 11 active systems in Moniteau County (64%) are also owned by a local government.
Does California Pws have drinking water violations?
EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in July 2025. The violations listed here began between January 1995 and July 2025. By type: 5 monitoring and reporting, 3 contaminant level above the legal limit, 1 reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 9 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2022-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2018-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-10-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2010-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | No | Resolved |
| 2000-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 10 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.
California Pws: frequently asked questions
Who runs California Pws?
California Pws (PWSID MO3010124) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does California Pws serve?
California Pws reports serving 4,423 people through 2,127 service connections in Moniteau County, Missouri.
Where does California Pws 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 California Pws have any drinking water violations?
EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in July 2025. 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 California Pws' 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 10 violations for this system; 3 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find California Pws' water quality report?
As a community water system, California Pws 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 Moniteau County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Tipton Pws | Moniteau | 2,861 | Community | Groundwater |
| Moniteau County Pwsd 2 | Moniteau | 1,400 | Community | Groundwater |
| Jamestown Pws | Moniteau | 368 | Community | Groundwater |
| Clarksburg Pws | Moniteau | 353 | Community | Groundwater |
| Burgers Ozark Country Cured Hams | Moniteau | 150 | Non-transient non-community | Groundwater |
| Mo American Hickory Hills | Moniteau | 125 | Community | Purchased groundwater |
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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, “California Pws, PWSID MO3010124, Missouri”, https://aquacensus.com/water-systems/missouri/california-pws-mo3010124 (data as of October 1, 2026).