Mississippi · drinking water · SDWIS through latest publish

Winterville Water Association Water Quality — Greenville, Mississippi

PWSID MS0760010 · GroundwaterMixed

92 people served. No health-based SDWIS violations recorded in the past 5 years. 3 remain unresolved. Last cited 1 year ago.

ALL SDWIS VIOLATIONS · 20222026 (annual count)
Bar chart of annual values from 2022 to 2026, in violations. Most recent year (2026): 0 violations.10 violations'22'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Antimony

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (antimony).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Beryllium

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (beryllium).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Cyanide

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (cyanide).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 10 citations
  • Antimony1 citation
  • Beryllium1 citation
  • Cyanide1 citation
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 · ANTIMONYUNRESOLVED

2025 · Antimony · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1038

MONITORING · BERYLLIUMUNRESOLVED

2025 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1040

MONITORING · CYANIDEUNRESOLVED

2025 · Cyanide · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1041

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

OTHER · CONTAMINANT

2022 · Contaminant · Lead and Copper Rule

OTHER; returned to compliance

CONTAMINANT CODE

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

Who Drinks This Water

Greenville, Mississippi (Census place; block-group disparity scores aggregated by centroid containment): a service population of 29,495. Local disparity score for pm2.5 (fine particulate) sits well above the reference burden (166). Why we surface this →

POPULATION SHARE
32.2%

Low-income

POPULATION SHARE
84.9%

People of color

POPULATION SHARE
6.7%

Under age 5

POPULATION SHARE
17.3%

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.61above the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.29below 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.45near 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.26below 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.27below the national median
  • 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.26below 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.63above 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.63above the national median
  • 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.32below 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.86in the highest 20% nationally
  • 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.23below 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.79above the national median
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)166well above the reference burden
Ozone87below the reference
Nitrogen dioxide (NO₂)123moderately above the reference
Diesel particulate74below the reference
Toxic releases (RSEI)72below the reference
Traffic proximity75below the reference
Lead-paint risk (pre-1960 housing)143moderately above the reference
Superfund site proximity0well below the reference
RMP-facility proximity164well above the reference burden
Hazardous-waste site proximity87below the reference
Underground storage tanks205severely above the reference burden
NPDES wastewater proximity59below the reference
Drinking-water non-compliance10well below 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 2022-01-012026-05-07.

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.