Public water system · MO5010553
ActiveMount Vernon Pws
At a glance
Mount Vernon Pws (PWSID MO5010553) is an active community water system in Lawrence County, Missouri. It reports serving 4,575 people through 1,949 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,575
Service connections
1,949
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mount Vernon Pws compare with other water systems in Lawrence County?
By EPA's size categories, Mount Vernon Pws is a medium system (3,301 to 10,000 people). Lawrence County has 36 active public water systems, and Mount Vernon Pws is the 2nd-largest of them by population served. Its population served is about 8.2 times the county average of 561 people per system, and accounts for 23% of the 20,196 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 Mount Vernon Pws is about 32% 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 Mount Vernon Pws?
EPA lists Mount Vernon 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. 6 of the 36 active systems in Lawrence County (17%) are also owned by a local government.
Does Mount Vernon Pws have drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in July 2025. The violations listed here began between January 1992 and July 2025. By type: 3 monitoring and reporting, 2 contaminant level above the legal limit and 1 reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 4 as resolved, 1 as unaddressed and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| 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 |
| 2024-10-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2015-10-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2012-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2012-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 6 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.
Mount Vernon Pws: frequently asked questions
Who runs Mount Vernon Pws?
Mount Vernon Pws (PWSID MO5010553) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Mount Vernon Pws serve?
Mount Vernon Pws reports serving 4,575 people through 1,949 service connections in Lawrence County, Missouri.
Where does Mount Vernon 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 Mount Vernon Pws have any drinking water violations?
EPA's records list 6 violations for this system; 2 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 Mount Vernon 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 6 violations for this system; 2 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 Mount Vernon Pws' water quality report?
As a community water system, Mount Vernon 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 Lawrence County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Liberty Utilities Aurora Verona | Lawrence | 8,529 | Community | Groundwater |
| Marionville | Lawrence | 2,092 | Community | Groundwater |
| Pierce City Pws | Lawrence | 1,200 | Community | Groundwater |
| Miller Pws | Lawrence | 699 | Community | Groundwater |
| Baumers Food Mart | Lawrence | 350 | Transient non-community | Groundwater |
| Sunset Drive in | Lawrence | 300 | 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, “Mount Vernon Pws, PWSID MO5010553, Missouri”, https://aquacensus.com/water-systems/missouri/mount-vernon-pws-mo5010553 (data as of October 1, 2026).