F0/100
TWO RIVERS WATERWORKS — Water Quality Report 2026
Serving 11,270 people · Wisconsin
Water Source
Surface Water
County
—
System ID
WI4360436
Violations
80
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 361.17 µg/L | — | Above Goal |
Lead (90th percentile) | 0.013 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – January 21, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: October 17, 2024 – June 13, 2025Rule: 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 TWO RIVERS WATERWORKS
Is TWO RIVERS WATERWORKS water safe to drink?
TWO RIVERS WATERWORKS water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 80 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has TWO RIVERS WATERWORKS detected?
69 contaminants were tested in TWO RIVERS WATERWORKS's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does TWO RIVERS WATERWORKS have any EPA violations?
Yes, TWO RIVERS WATERWORKS has 80 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, Other, MR. 5 are health-based violations.
How many people does TWO RIVERS WATERWORKS serve?
TWO RIVERS WATERWORKS serves approximately 11,270 people, Wisconsin. The system provides water to 1 community: Two Rivers.
What type of water does TWO RIVERS WATERWORKS provide?
TWO RIVERS 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 WI4360436.
How does TWO RIVERS WATERWORKS compare to other utilities in Wisconsin?
TWO RIVERS WATERWORKS scores 0/100 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.