Public water system · LA1103179
ActiveMagnolia-I59 MHP
At a glance
Magnolia-I59 MHP (PWSID LA1103179) is an active community water system in St. Tammany Parish County, Missouri. It reports serving 255 people through 85 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
255
Service connections
85
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Magnolia-I59 MHP compare with other water systems in St. Tammany Parish County?
By EPA's size categories, Magnolia-I59 MHP 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 0.6% 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-I59 MHP 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-I59 MHP?
EPA lists Magnolia-I59 MHP 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-I59 MHP have drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2024. The violations listed here began between January 2008 and October 2024. By type: 4 monitoring and reporting, 3 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2019-03-10 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-02-25 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2013-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | 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 |
| 2008-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
All 8 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-I59 MHP: frequently asked questions
Who runs Magnolia-I59 MHP?
Magnolia-I59 MHP (PWSID LA1103179) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does Magnolia-I59 MHP serve?
Magnolia-I59 MHP reports serving 255 people through 85 service connections in St. Tammany Parish County, Missouri.
Where does Magnolia-I59 MHP 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-I59 MHP have any drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2024. 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-I59 MHP'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 8 violations for this system; 1 is health-based, and the most recent began in October 2024. 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-I59 MHP's water quality report?
As a community water system, Magnolia-I59 MHP 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-I59 MHP, PWSID LA1103179, Missouri”, https://aquacensus.com/water-systems/missouri/magnolia-i59-mhp-la1103179 (data as of October 1, 2026).