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Evansville, WI Tap Water Quality 2026

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

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

Main Utility: Evansville Waterworks PWSID: WI1540047 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 6.33 ppb, 42% of the action level and no violations are open. No PFAS was detected.

B

Evansville earns a B for water quality

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

Lead: 6.33 ppb — 42% of the federal action level
PFAS tested, none detected
12 violations since 2015, 6 health-based
No violations currently open
Evansville's lead level vs. all Wisconsin community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 6.33 ppb — 42% of the federal action level
✓ Lower lead than 12% of Wisconsin utilities
Population Served
5534
~2112 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
12 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
42% of EPA action level
6.33 ppb
Action level: 15 ppb
The 90th-percentile lead result is 6.33 ppb, 42% 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.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Radium-228 MONITORING AND REPORTING — — 2025 Archived
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2025 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2025 Archived
Consumer Confidence Rule OTHER — — 2024 Resolved
Consumer Confidence Rule OTHER — — 2024 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 10.84 PCI/L 5 pCi/L 2018 Resolved
Gross Alpha, Excl. Radon and U MCL EXCEEDANCE 21.623 PCI/L 15 pCi/L 2018 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 10.185 PCI/L 5 pCi/L 2017 Resolved
Gross Alpha, Excl. Radon and U MCL EXCEEDANCE 19.695 PCI/L 15 pCi/L 2017 Resolved
Gross Alpha, Excl. Radon and U MCL EXCEEDANCE 17.63 PCI/L 15 pCi/L 2017 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 9.45 PCI/L 5 pCi/L 2017 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

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

About the Main Water System

Utility Evansville Waterworks
PWSID WI1540047
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 5,534
Service connections 2,112
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Evansville tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 6.33 ppb, 42% of the action level.
Does Evansville water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Evansville? ▼
Evansville Waterworks (PWSID WI1540047), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-11-25. No significant deficiencies were recorded.

What Should Evansville Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
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.

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