F5/100
RHINELANDER WATER & WASTEWATER — Water Quality Report 2026
Serving 8,234 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI7440126
Violations
69
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.007 µg/L | 0.004 µg/L | Over Limit |
chlorate | 340.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – March 25, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Disinfection byproduct treatment technique failure
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 RHINELANDER WATER & WASTEWATER
Is RHINELANDER WATER & WASTEWATER water safe to drink?
RHINELANDER WATER & WASTEWATER water receives a grade of F (5/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 69 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has RHINELANDER WATER & WASTEWATER detected?
51 contaminants were tested in RHINELANDER WATER & WASTEWATER's water. Notable contaminants include PFOA, Lead (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does RHINELANDER WATER & WASTEWATER have any EPA violations?
Yes, RHINELANDER WATER & WASTEWATER has 69 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 RHINELANDER WATER & WASTEWATER serve?
RHINELANDER WATER & WASTEWATER serves approximately 8,234 people, Wisconsin. The system provides water to 1 community: Rhinelander.
What type of water does RHINELANDER WATER & WASTEWATER provide?
RHINELANDER WATER & WASTEWATER sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI7440126.
How does RHINELANDER WATER & WASTEWATER compare to other utilities in Wisconsin?
RHINELANDER WATER & WASTEWATER scores 5/100 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.