Public water system · LA1055137
ActiveMagnolia-Markridge Park Subdivision
At a glance
Magnolia-Markridge Park Subdivision (PWSID LA1055137) is an active community water system in Lafayette Parish County, Missouri. It reports serving 468 people through 156 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 April 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
468
Service connections
156
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Magnolia-Markridge Park Subdivision compare with other water systems in Lafayette Parish County?
By EPA's size categories, Magnolia-Markridge Park Subdivision is a very small system (500 people or fewer). Lafayette Parish County has 23 active public water systems, and Magnolia-Markridge Park Subdivision is the 5th-largest of them by population served. Its population served is about 35% above the county average of 345 people per system, and accounts for 5.9% 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-Markridge Park 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-Markridge Park Subdivision?
EPA lists Magnolia-Markridge Park 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-Markridge Park 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 April 2016. The violations listed here began between January 2013 and April 2016. By type: 8 monitoring and reporting and 4 public notice, recordkeeping or other. The contaminant or rule involved most often is Public Notice (3 of them). EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2016-04-28 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-04-01 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-10-09 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-03-05 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2013-07-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2013-01-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | 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 |
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-Markridge Park Subdivision: frequently asked questions
Who runs Magnolia-Markridge Park Subdivision?
Magnolia-Markridge Park Subdivision (PWSID LA1055137) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does Magnolia-Markridge Park Subdivision serve?
Magnolia-Markridge Park Subdivision reports serving 468 people through 156 service connections in Lafayette Parish County, Missouri.
Where does Magnolia-Markridge Park 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-Markridge Park 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 April 2016. 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-Markridge Park 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 April 2016. 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-Markridge Park Subdivision's water quality report?
As a community water system, Magnolia-Markridge Park 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-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-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-Markridge Park Subdivision, PWSID LA1055137, Missouri”, https://aquacensus.com/water-systems/missouri/magnolia-markridge-park-subdivision-la1055137 (data as of October 1, 2026).