Public water system · MO3010448
ActiveLa Monte Pws
At a glance
La Monte Pws (PWSID MO3010448) is an active community water system in Pettis County, Missouri. It reports serving 1,120 people through 344 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,120
Service connections
344
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does La Monte Pws compare with other water systems in Pettis County?
By EPA's size categories, La Monte Pws is a small system (501 to 3,300 people). Pettis County has 30 active public water systems, and La Monte Pws is the 3rd-largest of them by population served. Its population served is about 18% above the county average of 950 people per system, and accounts for 3.9% of the 28,494 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 La Monte Pws 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. 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 La Monte Pws?
EPA lists La Monte 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. 5 of the 30 active systems in Pettis County (17%) are also owned by a local government.
Does La Monte Pws have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between October 1991 and July 2025. By type: 2 monitoring and reporting and 1 reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 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 |
| 2002-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1991-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
La Monte Pws: frequently asked questions
Who runs La Monte Pws?
La Monte Pws (PWSID MO3010448) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does La Monte Pws serve?
La Monte Pws reports serving 1,120 people through 344 service connections in Pettis County, Missouri.
Where does La Monte 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 La Monte Pws have any drinking water violations?
EPA's records list 3 violations for this system; none is 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 La Monte 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 3 violations for this system; none is 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 La Monte Pws' water quality report?
As a community water system, La Monte 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 Pettis County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sedalia Pws | Pettis | 21,725 | Community | Groundwater |
| Tyson Poultry Inc. | Pettis | 1,400 | Non-transient non-community | Groundwater |
| Mo American Maplewood Subdivision | Pettis | 1,008 | Community | Groundwater |
| Green Ridge Pws | Pettis | 595 | Community | Groundwater |
| Mo American Smithton | Pettis | 563 | Community | Groundwater |
| Southgate Subdivision | Pettis | 216 | Community | 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, “La Monte Pws, PWSID MO3010448, Missouri”, https://aquacensus.com/water-systems/missouri/la-monte-pws-mo3010448 (data as of October 1, 2026).