A86/100
COLFAX WATERWORKS — Water Quality Report 2026
Serving 1,102 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI6170261
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.78 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2019.
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 COLFAX WATERWORKS
Is COLFAX WATERWORKS water safe to drink?
COLFAX WATERWORKS water receives a grade of A (86/100), which is considered excellent. Out of 2 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has COLFAX WATERWORKS detected?
2 contaminants were tested in COLFAX WATERWORKS's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does COLFAX WATERWORKS have any EPA violations?
Yes, COLFAX WATERWORKS has 2 EPA violation(s) on record, with the most recent in 2019. Violation types include MON, MCL. 1 are health-based violations.
How many people does COLFAX WATERWORKS serve?
COLFAX WATERWORKS serves approximately 1,102 people, Wisconsin. The system provides water to 1 community: Colfax.
What type of water does COLFAX WATERWORKS provide?
COLFAX WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI6170261.
How does COLFAX WATERWORKS compare to other utilities in Wisconsin?
COLFAX WATERWORKS scores 86/100 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.