C58/100
APPLETON WATERWORKS — Water Quality Report 2026
Serving 74,511 people · Wisconsin
Water Source
Surface Water
County
—
System ID
WI4450333
Violations
35
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – September 27, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – September 27, 2023Enforcement: 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 APPLETON WATERWORKS
Is APPLETON WATERWORKS water safe to drink?
APPLETON WATERWORKS water receives a grade of C (58/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 35 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has APPLETON WATERWORKS detected?
69 contaminants were tested in APPLETON WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does APPLETON WATERWORKS have any EPA violations?
Yes, APPLETON WATERWORKS has 35 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR, MCL. 1 are health-based violations.
How many people does APPLETON WATERWORKS serve?
APPLETON WATERWORKS serves approximately 74,511 people, Wisconsin. The system provides water to 1 community: Menasha.
What type of water does APPLETON WATERWORKS provide?
APPLETON WATERWORKS sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is WI4450333.
How does APPLETON WATERWORKS compare to other utilities in Wisconsin?
APPLETON 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.