C58/100
WAUPACA WATERWORKS — Water Quality Report 2026
Serving 6,062 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI4690402
Violations
11
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
PFOS | 0.004 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – July 15, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: October 17, 2024 – June 23, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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 11, 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 WAUPACA WATERWORKS
Is WAUPACA WATERWORKS water safe to drink?
WAUPACA WATERWORKS water receives a grade of C (58/100), which is considered fair. 2 contaminant(s) exceed EPA legal limits and 11 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WAUPACA WATERWORKS detected?
32 contaminants were tested in WAUPACA WATERWORKS's water. Notable contaminants include Copper (90th percentile), PFOS, Lead (90th percentile). 2 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does WAUPACA WATERWORKS have any EPA violations?
Yes, WAUPACA WATERWORKS has 11 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, Other, MR. 3 are health-based violations.
How many people does WAUPACA WATERWORKS serve?
WAUPACA WATERWORKS serves approximately 6,062 people, Wisconsin. The system provides water to 1 community: Waupaca.
What type of water does WAUPACA WATERWORKS provide?
WAUPACA WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI4690402.
How does WAUPACA WATERWORKS compare to other utilities in Wisconsin?
WAUPACA WATERWORKS scores 58/100 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.