States ›Mississippi ›Montgomery County ›Winona

Winona, MS Tap Water Quality 2026

Water quality report for Winona, MS — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Winona's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: City Of Winona PWSID: MS0490010 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 3.20 ppb, 21% of the action level and no violations are open. No PFAS was detected.

C

Winona earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 3.20 ppb — 21% of the federal action level
PFAS tested, none detected
6 violations since 2015, 1 health-based
No violations currently open
Winona's lead level vs. all Mississippi community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.20 ppb — 21% of the federal action level
✓ Lower lead than 13% of Mississippi utilities
Population Served
3748
~1901 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
6 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
21% of EPA action level
3.20 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
136.3% of EPA action level
1,772 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 3.20 ppb, 21% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

6 violations are on record since 2015, of which 1 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility City Of Winona
PWSID MS0490010
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 3,748
Service connections 1,901
Systems serving this area 5
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Winona tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 3.20 ppb, 21% of the action level.
Does Winona water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Winona? ▼
City Of Winona (PWSID MS0490010), one of 5 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-06-24. Inspectors recorded 2 significant deficiencies.

What Should Winona Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in Mississippi

Kilmichael, Ms Tap Water Quality 2026 Montgomery Duck Hill, Ms Tap Water Quality 2026 Montgomery Stewart, Ms Tap Water Quality 2026 Montgomery