F0/100
MERRILL WATERWORKS — Water Quality Report 2026
Serving 9,661 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI7350123
Violations
140
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
No violations in the past 5 years
Full EPA compliance since 2006.
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 MERRILL WATERWORKS
Is MERRILL WATERWORKS water safe to drink?
MERRILL WATERWORKS water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 140 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MERRILL WATERWORKS detected?
31 contaminants were tested in MERRILL WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does MERRILL WATERWORKS have any EPA violations?
Yes, MERRILL WATERWORKS has 140 EPA violation(s) on record, with the most recent in 2006. Violation types include MR, MCL. 2 are health-based violations.
How many people does MERRILL WATERWORKS serve?
MERRILL WATERWORKS serves approximately 9,661 people, Wisconsin. The system provides water to 1 community: Merrill.
What type of water does MERRILL WATERWORKS provide?
MERRILL WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI7350123.
How does MERRILL WATERWORKS compare to other utilities in Wisconsin?
MERRILL 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.