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Lake Hallie, WI Tap Water Quality 2026

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

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

Main Utility: Lake Hallie Waterworks Village Of PWSID: WI6090849 Updated: 2026 Q2
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1 violation currently open

Lead is 1.20 ppb, 8% of the action level. No PFAS was detected.

D

Lake Hallie earns a D for water quality

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

Lead: 1.20 ppb — 8% of the federal action level
PFAS tested, none detected
10 violations since 2015, 1 health-based
1 violation currently open
Lake Hallie's lead level vs. all Wisconsin community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.20 ppb — 8% of the federal action level
✓ Lower lead than 74% of Wisconsin utilities
Population Served
4156
~753 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 10 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
8% of EPA action level
1.20 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.
131.5% of EPA action level
1,710 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 1.20 ppb, 8% 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 MONITORING AND REPORTING — TT 2025 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
Public Notice OTHER — — 2024 Unaddressed
Public Notice OTHER — — 2024 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2015 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2015 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

1 violation remains open, out of 10 recorded since 2015 (1 health-based).

About the Main Water System

Utility Lake Hallie Waterworks Village Of
PWSID WI6090849
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 4,156
Service connections 753
Systems serving this area 3
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Lake Hallie tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 1.20 ppb, 8% of the action level.
Does Lake Hallie water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Lake Hallie? ▼
Lake Hallie Waterworks Village Of (PWSID WI6090849), one of 3 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2026-02-06. No significant deficiencies were recorded.

What Should Lake Hallie 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
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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