F11/100
PORTAGE WATERWORKS — Water Quality Report 2026
Serving 10,437 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI1110039
Violations
62
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
No violations in the past 5 years
Full EPA compliance since 2003.
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 PORTAGE WATERWORKS
Is PORTAGE WATERWORKS water safe to drink?
PORTAGE WATERWORKS water receives a grade of F (11/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 62 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has PORTAGE WATERWORKS detected?
66 contaminants were tested in PORTAGE WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does PORTAGE WATERWORKS have any EPA violations?
Yes, PORTAGE WATERWORKS has 62 EPA violation(s) on record, with the most recent in 2003. Violation types include MCL, MR. 6 are health-based violations.
How many people does PORTAGE WATERWORKS serve?
PORTAGE WATERWORKS serves approximately 10,437 people, Wisconsin. The system provides water to 1 community: Portage.
What type of water does PORTAGE WATERWORKS provide?
PORTAGE WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI1110039.
How does PORTAGE WATERWORKS compare to other utilities in Wisconsin?
PORTAGE WATERWORKS scores 11/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Wisconsin state page for a full comparison of water systems.