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Community Water System · PWS LA1073046

South Monroe WS Gowc

West Monroe, Louisiana 71294 - drinking water served from groundwater sources to 7,335 people, tracked in EPA SDWIS and UCMR5.

7,335
People served
282
EPA violations
273
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 282 drinking-water violations at South Monroe WS Gowc, 97% of them health-based - above the Louisiana per-system average.

282
Total EPA violations on record
97%
Health-based (MCL / treatment failure)
7,335
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: South Monroe WS Gowc

South Monroe WS Gowc is a private-owned community water system that delivers drinking water to 7,335 residents in West Monroe, Louisiana (Ouachita Parish County) through 2,445 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 282 total violations for this system , of which 273 (97%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 7 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is TTHM, recorded in 261 violations (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

South Monroe WS Gowc's 282 violations sit above 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
7,335
Total Violations
282
Health-Based Violations
273
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
2,445
County
Ouachita Parish
School/Daycare
No
MCL Violations
273
Monitoring Violations
7
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 261 2023
Coliform (TCR) MCL 12 2015
TTHM MR 7 2015

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 5/5/2025 <8.00 ppt 8.00 ppt Not Detected
PFUnA 5/5/2025 <2.00 ppt 2.00 ppt Not Detected
PFHxA 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFDA 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFOS 5/5/2025 <4.00 ppt 4.00 ppt Not Detected
PFHxS 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFBS 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 5/5/2025 <2.00 ppt 2.00 ppt Not Detected
NMeFOSAA 5/5/2025 <6.00 ppt 6.00 ppt Not Detected
11Cl-PF3OUdS 5/5/2025 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 5/5/2025 <7.00 ppt 7.00 ppt Not Detected
PFOA 5/5/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpS 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeS 5/5/2025 <4.00 ppt 4.00 ppt Not Detected
NFDHA 5/5/2025 <20.00 ppt 20.00 ppt Not Detected
PFEESA 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
PFMPA 5/5/2025 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 5/5/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 5/5/2025 <5.00 ppt 5.00 ppt Not Detected
PFBA 5/5/2025 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 5/5/2025 <5.00 ppt 5.00 ppt Not Detected
ADONA 5/5/2025 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 5/5/2025 <5.00 ppt 5.00 ppt Not Detected
PFNA 5/5/2025 <4.00 ppt 4.00 ppt Not Detected
PFEESA 11/3/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 11/3/2025 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 11/3/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 11/3/2025 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 11/3/2025 <5.00 ppt 5.00 ppt Not Detected
PFMPA 11/3/2025 <4.00 ppt 4.00 ppt Not Detected
PFHxS 11/3/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 11/3/2025 <3.00 ppt 3.00 ppt Not Detected
PFBS 11/3/2025 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 11/3/2025 <5.00 ppt 5.00 ppt Not Detected
PFBA 11/3/2025 <5.00 ppt 5.00 ppt Not Detected
NFDHA 11/3/2025 <20.00 ppt 20.00 ppt Not Detected
PFPeS 11/3/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpS 11/3/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 11/3/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 11/3/2025 <2.00 ppt 2.00 ppt Not Detected
NMeFOSAA 11/3/2025 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 11/3/2025 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 11/3/2025 <7.00 ppt 7.00 ppt Not Detected
PFTA 11/3/2025 <8.00 ppt 8.00 ppt Not Detected
ADONA 11/3/2025 <3.00 ppt 3.00 ppt Not Detected

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 South Monroe WS Gowc.

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 LA1073046 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
2023 TTHM MCL 261 SDWIS / LA1073046 / 2950
2015 Coliform (TCR) MCL 12 SDWIS / LA1073046 / 3100
2015 TTHM MR 7 SDWIS / LA1073046 / 2950

How South Monroe WS Gowc Compares

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

Metric South Monroe WS Gowc Louisiana avg Federal benchmark
Total violations 282 93.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 273 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 7,335 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 South Monroe WS Gowc water safe to drink?
South Monroe WS Gowc (PWS ID: LA1073046) has 282 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 7,335 people using Groundwater sources.
How many people does South Monroe WS Gowc serve?
South Monroe WS Gowc serves 7,335 people in West Monroe, Louisiana. It is a Private-owned system using Groundwater water sources with 2,445 service connections.
What type of violations does South Monroe WS Gowc have?
South Monroe WS Gowc has 282 total violations: 273 health-based violations (MCL exceedances or treatment failures), 7 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in South Monroe WS Gowc water?
No. South Monroe WS Gowc was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does South Monroe WS Gowc use?
South Monroe WS Gowc 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
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.