Public water system · LA1055162
ActiveMagnolia-Le Triomphe Subdivision
At a glance
Magnolia-Le Triomphe Subdivision (PWSID LA1055162) is an active community water system in Lafayette Parish County, Missouri. It reports serving 1,278 people through 426 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, none is health-based, and the most recent began in June 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,278
Service connections
426
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Magnolia-Le Triomphe Subdivision compare with other water systems in Lafayette Parish County?
By EPA's size categories, Magnolia-Le Triomphe Subdivision is a small system (501 to 3,300 people). Lafayette Parish County has 23 active public water systems, and Magnolia-Le Triomphe Subdivision is the largest of them by population served. Its population served is about 3.7 times the county average of 345 people per system, and accounts for 16% 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-Le Triomphe Subdivision 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-Le Triomphe Subdivision?
EPA lists Magnolia-Le Triomphe Subdivision 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-Le Triomphe Subdivision have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in June 2019. The violations listed here began between July 2008 and June 2019. By type: 10 monitoring and reporting, 1 monitoring and 1 public notice, recordkeeping or other. 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 |
|---|---|---|---|---|
| 2019-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2017-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2016-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2015-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2012-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-07-01 | 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.
Magnolia-Le Triomphe Subdivision: frequently asked questions
Who runs Magnolia-Le Triomphe Subdivision?
Magnolia-Le Triomphe Subdivision (PWSID LA1055162) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does Magnolia-Le Triomphe Subdivision serve?
Magnolia-Le Triomphe Subdivision reports serving 1,278 people through 426 service connections in Lafayette Parish County, Missouri.
Where does Magnolia-Le Triomphe Subdivision 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-Le Triomphe Subdivision have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in June 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-Le Triomphe Subdivision'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, none is health-based, and the most recent began in June 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-Le Triomphe Subdivision's water quality report?
As a community water system, Magnolia-Le Triomphe Subdivision 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-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 |
| 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-Le Triomphe Subdivision, PWSID LA1055162, Missouri”, https://aquacensus.com/water-systems/missouri/magnolia-le-triomphe-subdivision-la1055162 (data as of October 1, 2026).