F11/100
ASHWAUBENON WATERWORKS — Water Quality Report 2026
Serving 17,730 people · Wisconsin
Water Source
Purchased Surface Water
County
—
System ID
WI4050456
Violations
18
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
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 ASHWAUBENON WATERWORKS
Is ASHWAUBENON WATERWORKS water safe to drink?
ASHWAUBENON WATERWORKS water receives a grade of F (11/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 18 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ASHWAUBENON WATERWORKS detected?
69 contaminants were tested in ASHWAUBENON WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ASHWAUBENON WATERWORKS have any EPA violations?
Yes, ASHWAUBENON WATERWORKS has 18 EPA violation(s) on record, with the most recent in 2025. Violation types include MON, MCL. 17 are health-based violations.
How many people does ASHWAUBENON WATERWORKS serve?
ASHWAUBENON WATERWORKS serves approximately 17,730 people, Wisconsin. The system provides water to 1 community: Green Bay.
What type of water does ASHWAUBENON WATERWORKS provide?
ASHWAUBENON WATERWORKS sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is WI4050456.
How does ASHWAUBENON WATERWORKS compare to other utilities in Wisconsin?
ASHWAUBENON WATERWORKS scores 11/100 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.