Public water system · LA1103153
ActiveMagnolia-Port Louis Townhomes
At a glance
Magnolia-Port Louis Townhomes (PWSID LA1103153) is an active community water system in St. Tammany Parish County, Missouri. It reports serving 200 people through 50 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 11 violations for this system; 5 are health-based, and the most recent began in February 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
200
Service connections
50
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Magnolia-Port Louis Townhomes compare with other water systems in St. Tammany Parish County?
By EPA's size categories, Magnolia-Port Louis Townhomes is a very small system (500 people or fewer). St. Tammany Parish County has 27 active public water systems. Its population served is well below the county average of 1,698 people per system, and accounts for 0.4% of the 45,833 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-Port Louis Townhomes 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 Magnolia-Port Louis Townhomes?
EPA lists Magnolia-Port Louis Townhomes 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. 27 of the 27 active systems in St. Tammany Parish County (100%) are also privately owned.
Does Magnolia-Port Louis Townhomes have drinking water violations?
EPA's records list 11 violations for this system; 5 are health-based, and the most recent began in February 2025. The violations listed here began between August 1995 and February 2025. By type: 4 contaminant level above the legal limit, 4 public notice, recordkeeping or other, 2 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 7 as archived, 3 as resolved and 1 as unaddressed. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-02-11 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2013-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2013-11-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2008-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2000-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1999-10-19 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1998-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1997-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1997-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1995-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1995-08-01 | Public notice, recordkeeping or otherVariance/Exemption/Other Compliance · code 08 | Not reported | No | Archived |
All 11 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-Port Louis Townhomes: frequently asked questions
Who runs Magnolia-Port Louis Townhomes?
Magnolia-Port Louis Townhomes (PWSID LA1103153) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does Magnolia-Port Louis Townhomes serve?
Magnolia-Port Louis Townhomes reports serving 200 people through 50 service connections in St. Tammany Parish County, Missouri.
Where does Magnolia-Port Louis Townhomes 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 Magnolia-Port Louis Townhomes have any drinking water violations?
EPA's records list 11 violations for this system; 5 are health-based, and the most recent began in February 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 Magnolia-Port Louis Townhomes' 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 11 violations for this system; 5 are health-based, and the most recent began in February 2025. 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-Port Louis Townhomes' water quality report?
As a community water system, Magnolia-Port Louis Townhomes 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 St. Tammany Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Magnolia-Eden Isles | St. Tammany Parish | 10,155 | Community | Groundwater |
| Magnolia-Greenleaves | St. Tammany Parish | 8,031 | Community | Groundwater |
| Magnolia-Resolve Whisperwood | St. Tammany Parish | 6,867 | Community | Groundwater |
| Magnolia-the Meadows | St. Tammany Parish | 4,701 | Community | Groundwater |
| Magnolia-Lakeshore Estates | St. Tammany Parish | 4,146 | Community | Groundwater |
| Magnolia-Guste Island | St. Tammany Parish | 2,847 | 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, “Magnolia-Port Louis Townhomes, PWSID LA1103153, Missouri”, https://aquacensus.com/water-systems/missouri/magnolia-port-louis-townhomes-la1103153 (data as of October 1, 2026).