A86/100
ST CROIX FALLS WATERWORKS — Water Quality Report 2026
Serving 2,079 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI6490343
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 2Unresolved
Violation related to Consumer Confidence Report
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 10, 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 ST CROIX FALLS WATERWORKS
Is ST CROIX FALLS WATERWORKS water safe to drink?
ST CROIX FALLS WATERWORKS water receives a grade of A (86/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ST CROIX FALLS WATERWORKS detected?
1 contaminants were tested in ST CROIX FALLS WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ST CROIX FALLS WATERWORKS have any EPA violations?
Yes, ST CROIX FALLS WATERWORKS has 3 EPA violation(s) on record, with the most recent in 2025. Violation types include TT, MR, MCL. 2 are health-based violations.
How many people does ST CROIX FALLS WATERWORKS serve?
ST CROIX FALLS WATERWORKS serves approximately 2,079 people, Wisconsin. The system provides water to 1 community: St Croix Falls.
What type of water does ST CROIX FALLS WATERWORKS provide?
ST CROIX FALLS WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI6490343.
How does ST CROIX FALLS WATERWORKS compare to other utilities in Wisconsin?
ST CROIX FALLS 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.