Louisiana · drinking water · SDWIS through latest publish

Town Of Maringouin Water Quality — Maringouin, Louisiana

PWSID LA1047003 · GroundwaterMunicipal

3,300 people served. 1 health-based SDWIS violation recorded in the past 5 years. Last cited 2 years ago.

ALL SDWIS VIOLATIONS · 20242026 (annual count)
Bar chart of annual values from 2024 to 2026, in violations. Most recent year (2026): 0 violations.3 violations'24'25'260 violations
Anomaly engine

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HEALTH-BASED · 5-YEAR WINDOW · SDWIS VIOLATION

Contaminant 5200

Phase I/II/V Inorganic Chemical Rules health-based violation cited in 2024 (contaminant 5200).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 52003 citations
Violation history

What's On The SDWIS Record

Health-based violations exceed an MCL or treatment-technique standard. Monitoring violations are reporting failures with no measured exceedance — they tell you the system isn't fully transparent, not that the water is unsafe today.

MONITORING · CONTAMINANT 5200

2024 · Contaminant 5200 · Phase I/II/V Inorganic Chemical Rules

Reporting failure; returned to compliance

CONTAMINANT CODE 5200

MONITORING · CONTAMINANT 5200

2024 · Contaminant 5200 · Phase I/II/V Inorganic Chemical Rules

Reporting failure; returned to compliance

CONTAMINANT CODE 5200

HEALTH-BASED · CONTAMINANT 5200

2024 · Contaminant 5200 · Phase I/II/V Inorganic Chemical Rules

Treatment technique violation; returned to compliance

CONTAMINANT CODE 5200

Equity context · ACS 2018-2022 · USEPA-clone EJ disparity

Who Drinks This Water

Iberville Parish, Louisiana (utility's served county per SDWIS GEOGRAPHIC_AREA — city-level not yet matched): a service population of 30,210. Local disparity score for pm2.5 (fine particulate) sits below the reference (84). Why we surface this →

POPULATION SHARE
16.8%

Low-income

POPULATION SHARE
52.8%

People of color

POPULATION SHARE
5.5%

Under age 5

POPULATION SHARE
16.7%

Over age 64

NATIONAL PERCENTILE · vs all US block groups (population-weighted; ranked against the national EJScreen indicator distribution)

  • PM2.5 (fine particulate)Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.48near the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.62above the national median
  • Nitrogen dioxide (NO₂)Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.18below the national median
  • Diesel particulateHealth riskSoot from diesel engines (trucks, trains, ports, construction). EPA classifies it as a likely human carcinogen and a major driver of childhood asthma near freight corridors.42near the national median
  • Toxic releases (RSEI)Health riskEPA's Risk-Screening Environmental Indicators score — weights TRI chemical releases by toxicity, where they go, and how many people are nearby. Higher means greater modeled cancer and chronic-health risk.99in the highest 5% nationally
  • Traffic proximityHealth riskPopulation-weighted distance to high-volume roads. Living close to heavy traffic raises exposure to PM2.5, NO₂, and diesel exhaust — and the cardiovascular and asthma risks that follow.12below the national median
  • Lead-paint risk (pre-1960 housing)Health riskShare of housing built before 1960, when lead-based paint was common. Dust from deteriorating paint is the leading cause of childhood lead poisoning, which permanently impairs cognitive development.52near the national median
  • Superfund site proximityHealth riskPopulation-weighted distance to NPL Superfund sites — the most contaminated waste sites in the country. Nearby groundwater, soil, and air can carry industrial solvents, metals, and other long-lived contaminants.56near the national median
  • RMP-facility proximityHealth riskDistance to facilities holding chemicals at quantities large enough to require an EPA Risk Management Plan (refineries, fertilizer plants, etc.). These pose acute exposure risk during accidental releases.96in the highest 5% nationally
  • Hazardous-waste site proximityHealth riskDistance to RCRA hazardous-waste handlers (treatment, storage, disposal facilities). Indicates potential exposure to industrial chemicals in air, soil, and groundwater.70above the national median
  • Underground storage tanksHealth riskDensity of underground tanks (gasoline, heating oil, industrial fluids). Leaking tanks are a leading source of benzene and other volatile organic compounds in groundwater drinking-water supplies.45near the national median
  • NPDES wastewater proximityHealth riskDistance to permitted industrial wastewater dischargers. Closer proximity raises exposure to pollutants released into surface waters used for fishing, recreation, and downstream drinking-water intakes.79above the national median
  • Drinking-water non-complianceHealth riskEPA score for public water systems with health-based Safe Drinking Water Act violations. Higher means more residents on systems that recently exceeded safe limits for contaminants like lead, arsenic, or nitrate.92in the highest 10% nationally
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)84below the reference
Ozone27well below the reference
Nitrogen dioxide (NO₂)36well below the reference
Diesel particulate72below the reference
Toxic releases (RSEI)161well above the reference burden
Traffic proximity22well below the reference
Lead-paint risk (pre-1960 housing)73below the reference
Superfund site proximity0well below the reference
RMP-facility proximity140moderately above the reference
Hazardous-waste site proximity101near the reference
Underground storage tanks66below the reference
NPDES wastewater proximity112moderately above the reference
Drinking-water non-compliance50below the reference

Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).

Source. EPA Safe Drinking Water Information System · retrieved 2026-05-07. Reporting period 2024-01-012026-05-07.

What this is not. SDWIS records compliance against federal MCLs — not a direct readout of tap-water concentrations. Active health-based violations are not the same as a current crisis; we link to the EPA record so you can verify return-to-compliance status before forming a conclusion.