Contaminant
Unresolved Lead and Copper Rule violation cited in 2025 (contaminant ).
PWSID MS0490006 · GroundwaterMixed
700 people served. No health-based SDWIS violations recorded in the past 5 years. 7 remain unresolved. Last cited 1 year ago.
Unresolved Lead and Copper Rule violation cited in 2025 (contaminant ).
Unresolved Total Trihalomethanes Rule violation cited in 2024 (total trihalomethanes (tthm)).
Unresolved Total Trihalomethanes Rule violation cited in 2024 (total trihalomethanes (tthm)).
Unresolved Total Trihalomethanes Rule violation cited in 2024 (total trihalomethanes (tthm)).
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.
OTHER
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Winona, Mississippi (Census place; block-group disparity scores aggregated by centroid containment): a service population of 4,422. Local disparity score for pm2.5 (fine particulate) sits moderately above the reference (131). Why we surface this →
Low-income
People of color
Under age 5
Over age 64
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 131 | moderately above the reference |
| Ozone | 37 | well below the reference |
| Nitrogen dioxide (NO₂) | 85 | below the reference |
| Diesel particulate | 41 | well below the reference |
| Toxic releases (RSEI) | 26 | well below the reference |
| Traffic proximity | 28 | well below the reference |
| Lead-paint risk (pre-1960 housing) | 169 | well above the reference burden |
| Superfund site proximity | 0 | well below the reference |
| RMP-facility proximity | 0 | well below the reference |
| Hazardous-waste site proximity | 0 | well below the reference |
| Underground storage tanks | 156 | well above the reference burden |
| NPDES wastewater proximity | 120 | moderately above the reference |
| Drinking-water non-compliance | 0 | well 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 2024-01-01 → 2026-05-07.
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.