F0/100
CHETEK WATERWORKS — Water Quality Report 2026
Serving 1,931 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI6030129
Violations
125
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 4.21 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2021.
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 CHETEK WATERWORKS
Is CHETEK WATERWORKS water safe to drink?
CHETEK WATERWORKS water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 125 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CHETEK WATERWORKS detected?
2 contaminants were tested in CHETEK WATERWORKS's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does CHETEK WATERWORKS have any EPA violations?
Yes, CHETEK WATERWORKS has 125 EPA violation(s) on record, with the most recent in 2021. Violation types include MR, MCL, Other. 3 are health-based violations.
How many people does CHETEK WATERWORKS serve?
CHETEK WATERWORKS serves approximately 1,931 people, Wisconsin. The system provides water to 1 community: Chetek.
What type of water does CHETEK WATERWORKS provide?
CHETEK WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI6030129.
How does CHETEK WATERWORKS compare to other utilities in Wisconsin?
CHETEK 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.