F0/100
BARABOO WATERWORKS — Water Quality Report 2026
Serving 12,703 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI1570085
Violations
92
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.50 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.008 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
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 BARABOO WATERWORKS
Is BARABOO WATERWORKS water safe to drink?
BARABOO WATERWORKS water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 92 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has BARABOO WATERWORKS detected?
67 contaminants were tested in BARABOO 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 BARABOO WATERWORKS have any EPA violations?
Yes, BARABOO WATERWORKS has 92 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, Other.
How many people does BARABOO WATERWORKS serve?
BARABOO WATERWORKS serves approximately 12,703 people, Wisconsin. The system provides water to 1 community: Baraboo.
What type of water does BARABOO WATERWORKS provide?
BARABOO WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI1570085.
How does BARABOO WATERWORKS compare to other utilities in Wisconsin?
BARABOO WATERWORKS 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.