Public water system · LA1055101
ActiveMagnolia-Jackson Square
At a glance
Magnolia-Jackson Square (PWSID LA1055101) is an active community water system in Lafayette Parish County, Missouri. It reports serving 825 people through 275 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in May 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
825
Service connections
275
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Magnolia-Jackson Square compare with other water systems in Lafayette Parish County?
By EPA's size categories, Magnolia-Jackson Square is a small system (501 to 3,300 people). Lafayette Parish County has 23 active public water systems, and Magnolia-Jackson Square is the 2nd-largest of them by population served. Its population served is about 139% above the county average of 345 people per system, and accounts for 10% of the 7,945 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 Magnolia-Jackson Square 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 177 Missouri systems (6%) list purchased groundwater as their primary source.
Who owns and regulates Magnolia-Jackson Square?
EPA lists Magnolia-Jackson Square as privately owned. The LA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 23 of the 23 active systems in Lafayette Parish County (100%) are also privately owned.
Does Magnolia-Jackson Square have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in May 2023. The violations listed here began between April 2010 and May 2023. By type: 5 monitoring and reporting, 3 required treatment not met, 3 disinfectant level above the legal limit and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Chlorine (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 |
|---|---|---|---|---|
| 2023-05-18 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-01-01 | Disinfectant level above the legal limitNon-Acute MRDL · code 11 | Chlorinecode 0999 | Yes | Resolved |
| 2021-10-01 | Disinfectant level above the legal limitNon-Acute MRDL · code 11 | Chlorinecode 0999 | Yes | Resolved |
| 2021-07-01 | Disinfectant level above the legal limitNon-Acute MRDL · code 11 | Chlorinecode 0999 | Yes | Resolved |
| 2019-11-08 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2014-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-06-28 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2012-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Magnolia-Jackson Square: frequently asked questions
Who runs Magnolia-Jackson Square?
Magnolia-Jackson Square (PWSID LA1055101) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does Magnolia-Jackson Square serve?
Magnolia-Jackson Square reports serving 825 people through 275 service connections in Lafayette Parish County, Missouri.
Where does Magnolia-Jackson Square get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Magnolia-Jackson Square have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in May 2023. 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 Magnolia-Jackson Square'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, 7 are health-based, and the most recent began in May 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the LA state drinking water program.
Where can I find Magnolia-Jackson Square's water quality report?
As a community water system, Magnolia-Jackson Square 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 Lafayette Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Magnolia-Le Triomphe Subdivision | Lafayette Parish | 1,278 | Community | Purchased groundwater |
| Magnolia-Windy Meadows | Lafayette Parish | 549 | Community | Purchased groundwater |
| Magnolia-Garden Heights Subdivision Ws | Lafayette Parish | 483 | Community | Groundwater |
| Magnolia-Markridge Park Subdivision | Lafayette Parish | 468 | Community | Purchased groundwater |
| Magnolia-Beau Parterre | Lafayette Parish | 462 | Community | Purchased groundwater |
| Magnolia-Shenandoah Estates | Lafayette Parish | 396 | 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, “Magnolia-Jackson Square, PWSID LA1055101, Missouri”, https://aquacensus.com/water-systems/missouri/magnolia-jackson-square-la1055101 (data as of October 1, 2026).