C58/100
HAZEL GREEN WATERWORKS — Water Quality Report 2026
Serving 1,193 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI1220102
Violations
15
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.39 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2023 – November 9, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Disinfection byproduct treatment technique failure
TIER 2Resolved
Consumer confidence report — content deficiency
When: December 29, 2022 – March 12, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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 HAZEL GREEN WATERWORKS
Is HAZEL GREEN WATERWORKS water safe to drink?
HAZEL GREEN WATERWORKS water receives a grade of C (58/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 15 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has HAZEL GREEN WATERWORKS detected?
2 contaminants were tested in HAZEL GREEN WATERWORKS's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does HAZEL GREEN WATERWORKS have any EPA violations?
Yes, HAZEL GREEN WATERWORKS has 15 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, Other, TT. 4 are health-based violations.
How many people does HAZEL GREEN WATERWORKS serve?
HAZEL GREEN WATERWORKS serves approximately 1,193 people, Wisconsin. The system provides water to 1 community: Hazel Green.
What type of water does HAZEL GREEN WATERWORKS provide?
HAZEL GREEN WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI1220102.
How does HAZEL GREEN WATERWORKS compare to other utilities in Wisconsin?
HAZEL GREEN WATERWORKS scores 58/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Wisconsin state page for a full comparison of water systems.