F0/100
FOX LAKE CORRECTIONAL INSTITUTION — Water Quality Report 2026
Serving 1,850 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI1140144
Violations
96
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.55 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
4
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 3Resolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024 – November 14, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – August 11, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Disinfection byproduct treatment technique failure
TIER 3Unresolved
Disinfection byproduct treatment technique failure
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About FOX LAKE CORRECTIONAL INSTITUTION
Is FOX LAKE CORRECTIONAL INSTITUTION water safe to drink?
FOX LAKE CORRECTIONAL INSTITUTION water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 96 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has FOX LAKE CORRECTIONAL INSTITUTION detected?
2 contaminants were tested in FOX LAKE CORRECTIONAL INSTITUTION's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does FOX LAKE CORRECTIONAL INSTITUTION have any EPA violations?
Yes, FOX LAKE CORRECTIONAL INSTITUTION has 96 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, Other. 5 are health-based violations.
How many people does FOX LAKE CORRECTIONAL INSTITUTION serve?
FOX LAKE CORRECTIONAL INSTITUTION serves approximately 1,850 people, Wisconsin. The system provides water to 1 community: Fox Lake.
What type of water does FOX LAKE CORRECTIONAL INSTITUTION provide?
FOX LAKE CORRECTIONAL INSTITUTION sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI1140144.
How does FOX LAKE CORRECTIONAL INSTITUTION compare to other utilities in Wisconsin?
FOX LAKE CORRECTIONAL INSTITUTION scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Wisconsin state page for a full comparison of water systems.