Public water system · LA1055128
ActiveMagnolia-Southfield Square
At a glance
Magnolia-Southfield Square (PWSID LA1055128) is an active community water system in Lafayette Parish County, Missouri. It reports serving 279 people through 93 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in November 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
279
Service connections
93
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Magnolia-Southfield Square compare with other water systems in Lafayette Parish County?
By EPA's size categories, Magnolia-Southfield Square is a very small system (500 people or fewer). Lafayette Parish County has 23 active public water systems. Its population served is about 19% below the county average of 345 people per system, and accounts for 3.5% 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-Southfield 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-Southfield Square?
EPA lists Magnolia-Southfield 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-Southfield Square have drinking water violations?
EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in November 2019. The violations listed here began between July 1999 and November 2019. By type: 6 monitoring and reporting, 2 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 7 as resolved and 2 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. 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 |
|---|---|---|---|---|
| 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 |
| 2013-01-01 | 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 |
| 2008-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2007-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2006-07-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 9 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-Southfield Square: frequently asked questions
Who runs Magnolia-Southfield Square?
Magnolia-Southfield Square (PWSID LA1055128) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does Magnolia-Southfield Square serve?
Magnolia-Southfield Square reports serving 279 people through 93 service connections in Lafayette Parish County, Missouri.
Where does Magnolia-Southfield 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-Southfield Square have any drinking water violations?
EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in November 2019. 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-Southfield 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. EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in November 2019. 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-Southfield Square's water quality report?
As a community water system, Magnolia-Southfield 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-Jackson Square | Lafayette Parish | 825 | 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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-Southfield Square, PWSID LA1055128, Missouri”, https://aquacensus.com/water-systems/missouri/magnolia-southfield-square-la1055128 (data as of October 1, 2026).