A90/100
EAU CLAIRE WATERWORKS — Water Quality Report 2026
Serving 70,587 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI6180230
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1999.
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 EAU CLAIRE WATERWORKS
Is EAU CLAIRE WATERWORKS water safe to drink?
EAU CLAIRE WATERWORKS water receives a grade of A (90/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has EAU CLAIRE WATERWORKS detected?
66 contaminants were tested in EAU CLAIRE WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does EAU CLAIRE WATERWORKS have any EPA violations?
Yes, EAU CLAIRE WATERWORKS has 3 EPA violation(s) on record, with the most recent in 1999. Violation types include MCL, MR. 1 are health-based violations.
How many people does EAU CLAIRE WATERWORKS serve?
EAU CLAIRE WATERWORKS serves approximately 70,587 people, Wisconsin. The system provides water to 1 community: Eau Claire.
What type of water does EAU CLAIRE WATERWORKS provide?
EAU CLAIRE WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI6180230.
How does EAU CLAIRE WATERWORKS compare to other utilities in Wisconsin?
EAU CLAIRE WATERWORKS scores 90/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Wisconsin state page for a full comparison of water systems.