Public water system · MO3021236
ActiveMaries County Pwsd 1 South
At a glance
Maries County Pwsd 1 South (PWSID MO3021236) is an active community water system in Maries County, Missouri. It reports serving 300 people through 139 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
300
Service connections
139
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Maries County Pwsd 1 South compare with other water systems in Maries County?
By EPA's size categories, Maries County Pwsd 1 South is a very small system (500 people or fewer). Maries County has 10 active public water systems, and Maries County Pwsd 1 South is the 5th-largest of them by population served. Its population served is about 20% below the county average of 374 people per system, and accounts for 8% of the 3,743 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 Maries County Pwsd 1 South 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 Maries County Pwsd 1 South?
EPA lists Maries County Pwsd 1 South 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. 6 of the 10 active systems in Maries County (60%) are also owned by a local government.
Does Maries County Pwsd 1 South have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2024. The violations listed here began between July 2004 and December 2024. By type: 4 monitoring and reporting, 4 contaminant level above the legal limit, 2 monitoring and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2024-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-01-03 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2018-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2012-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2005-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
The 12 most recent 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.
Maries County Pwsd 1 South: frequently asked questions
Who runs Maries County Pwsd 1 South?
Maries County Pwsd 1 South (PWSID MO3021236) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Maries County Pwsd 1 South serve?
Maries County Pwsd 1 South reports serving 300 people through 139 service connections in Maries County, Missouri.
Where does Maries County Pwsd 1 South 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 Maries County Pwsd 1 South have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2024. 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 Maries County Pwsd 1 South'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. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Maries County Pwsd 1 South's water quality report?
As a community water system, Maries County Pwsd 1 South 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 Maries County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Belle Pws | Maries + 1 more | 1,300 | Community | Groundwater |
| Vienna Pws | Maries | 591 | Community | Groundwater |
| Maries County Pwsd 1 North | Maries | 474 | Community | Groundwater |
| Osage County Pwsd 4 | Maries + 1 more | 357 | Community | Groundwater |
| Turkey Hill Ranch Bible Camp | Maries | 300 | Transient non-community | Groundwater |
| Crossroads Convenience Store | Maries | 200 | Transient non-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, “Maries County Pwsd 1 South, PWSID MO3021236, Missouri”, https://aquacensus.com/water-systems/missouri/maries-county-pwsd-1-south-mo3021236 (data as of October 1, 2026).