B68/100
TOMAHAWK WATERWORKS — Water Quality Report 2026
Serving 3,180 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI7350127
Violations
9
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.021 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
TIER 2Unresolved
Treatment technique violation
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 TOMAHAWK WATERWORKS
Is TOMAHAWK WATERWORKS water safe to drink?
TOMAHAWK WATERWORKS water receives a grade of B (68/100), which is considered good. Out of 31 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has TOMAHAWK WATERWORKS detected?
31 contaminants were tested in TOMAHAWK WATERWORKS's water. Notable contaminants include PFOA, Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does TOMAHAWK WATERWORKS have any EPA violations?
Yes, TOMAHAWK WATERWORKS has 9 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, TT, MCL. 3 are health-based violations.
How many people does TOMAHAWK WATERWORKS serve?
TOMAHAWK WATERWORKS serves approximately 3,180 people, Wisconsin. The system provides water to 1 community: Tomahawk.
What type of water does TOMAHAWK WATERWORKS provide?
TOMAHAWK WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI7350127.
How does TOMAHAWK WATERWORKS compare to other utilities in Wisconsin?
TOMAHAWK WATERWORKS scores 68/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Wisconsin state page for a full comparison of water systems.