C56/100
BLACK RIVER FALLS WATERWORKS — Water Quality Report 2026
Serving 3,608 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI6270244
Violations
13
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.52 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 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 – May 29, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Disinfection byproduct treatment technique failure
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2024 – April 30, 2024Rule: Total Coliform 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 BLACK RIVER FALLS WATERWORKS
Is BLACK RIVER FALLS WATERWORKS water safe to drink?
BLACK RIVER FALLS WATERWORKS water receives a grade of C (56/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 13 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has BLACK RIVER FALLS WATERWORKS detected?
32 contaminants were tested in BLACK RIVER FALLS WATERWORKS's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does BLACK RIVER FALLS WATERWORKS have any EPA violations?
Yes, BLACK RIVER FALLS WATERWORKS has 13 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, Other, MON. 5 are health-based violations.
How many people does BLACK RIVER FALLS WATERWORKS serve?
BLACK RIVER FALLS WATERWORKS serves approximately 3,608 people, Wisconsin. The system provides water to 1 community: Black River Falls.
What type of water does BLACK RIVER FALLS WATERWORKS provide?
BLACK RIVER FALLS WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI6270244.
How does BLACK RIVER FALLS WATERWORKS compare to other utilities in Wisconsin?
BLACK RIVER FALLS WATERWORKS scores 56/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Wisconsin state page for a full comparison of water systems.