A81/100
HUDSON WATERWORKS — Water Quality Report 2026
Serving 17,635 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI6560087
Violations
8
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.006 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – June 9, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Disinfection byproduct treatment technique failure
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – January 5, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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 HUDSON WATERWORKS
Is HUDSON WATERWORKS water safe to drink?
HUDSON WATERWORKS water receives a grade of A (81/100), 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 HUDSON WATERWORKS detected?
66 contaminants were tested in HUDSON WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does HUDSON WATERWORKS have any EPA violations?
Yes, HUDSON WATERWORKS has 8 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, Other, MR. 2 are health-based violations.
How many people does HUDSON WATERWORKS serve?
HUDSON WATERWORKS serves approximately 17,635 people, Wisconsin. The system provides water to 1 community: Hudson.
What type of water does HUDSON WATERWORKS provide?
HUDSON WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI6560087.
How does HUDSON WATERWORKS compare to other utilities in Wisconsin?
HUDSON WATERWORKS scores 81/100 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.