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Community Water System · PWS LA1073097

Magnolia-Western Utilities, Inc

Des Peres, Louisiana 63131 - drinking water served from groundwater sources to 789 people, tracked in EPA SDWIS and UCMR5.

789
People served
66
EPA violations
35
Health-based
Untested
UCMR5 result

The verdict

EPA records 66 drinking-water violations at Magnolia-Western Utilities, Inc, 53% of them health-based - below the Louisiana per-system average.

66
Total EPA violations on record
53%
Health-based (MCL / treatment failure)
789
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Magnolia-Western Utilities, Inc

Magnolia-Western Utilities, Inc is a private-owned community water system that delivers drinking water to 789 residents in Des Peres, Louisiana (Ouachita Parish County) through 263 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 66 total violations for this system , of which 35 (53%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 21 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Groundwater Rule, recorded in 35 violations (TT, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Louisiana, EPA tracks 1,234 public water systems serving 5,316,532 people, with 115,060 cumulative violations and 62,164 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 93.2 violations. Statewide, 218 of 265 UCMR5-tested systems have reported PFAS detections (82.3%).

Magnolia-Western Utilities, Inc's 66 violations sit below the Louisiana average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
789
Total Violations
66
Health-Based Violations
35
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
263
County
Ouachita Parish
School/Daycare
No
MCL Violations
0
Monitoring Violations
21
Treatment Tech Violations
35

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Groundwater Rule TT 35 2018
Lead and Copper Rule MR 8 2018
Public Notice Other 6 2018
Coliform (TCR) MR 6 2015
Consumer Confidence Rule Other 4 2021
Chlorine MR 4 2015
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 1 2010
Total Haloacetic Acids (HAA5) MR 1 2009
TTHM MR 1 2009

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Magnolia-Western Utilities, Inc.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID LA1073097 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Louisiana Drinking Water Authority

Louisiana's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find LA regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2021 Consumer Confidence Rule Other 4 SDWIS / LA1073097 / 7000
2018 Groundwater Rule TT 35 SDWIS / LA1073097 / 0700
2018 Lead and Copper Rule MR 8 SDWIS / LA1073097 / 5000
2018 Public Notice Other 6 SDWIS / LA1073097 / 7500
2015 Coliform (TCR) MR 6 SDWIS / LA1073097 / 3100
2015 Chlorine MR 4 SDWIS / LA1073097 / 0999
2010 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 1 SDWIS / LA1073097 / 0600
2009 Total Haloacetic Acids (HAA5) MR 1 SDWIS / LA1073097 / 2456
2009 TTHM MR 1 SDWIS / LA1073097 / 2950

How Magnolia-Western Utilities, Inc Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Magnolia-Western Utilities, Inc Louisiana avg Federal benchmark
Total violations 66 93.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 35 50.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 82.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 789 4,308 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,234 regulated public water systems in Louisiana.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Magnolia-Western Utilities, Inc water safe to drink? ▼
Magnolia-Western Utilities, Inc (PWS ID: LA1073097) has 66 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 789 people using Groundwater sources.
How many people does Magnolia-Western Utilities, Inc serve? ▼
Magnolia-Western Utilities, Inc serves 789 people in Des Peres, Louisiana. It is a Private-owned system using Groundwater water sources with 263 service connections.
What type of violations does Magnolia-Western Utilities, Inc have? ▼
Magnolia-Western Utilities, Inc has 66 total violations: 35 health-based violations (MCL exceedances or treatment failures), 21 monitoring/reporting violations, and 35 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Magnolia-Western Utilities, Inc water? ▼
No PFAS testing data is available for Magnolia-Western Utilities, Inc under the EPA's UCMR5 monitoring program.
What water source does Magnolia-Western Utilities, Inc use? ▼
Magnolia-Western Utilities, Inc uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.