A81/100
NORTH LIBERTY WATER SUPPLY — Water Quality Report 2026
Serving 20,491 people · Iowa
Water Source
Groundwater
County
—
System ID
IA5252072
Violations
7
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.90 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2005.
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 NORTH LIBERTY WATER SUPPLY
Is NORTH LIBERTY WATER SUPPLY water safe to drink?
NORTH LIBERTY WATER SUPPLY water receives a grade of A (81/100), which is considered excellent. Out of 52 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has NORTH LIBERTY WATER SUPPLY detected?
52 contaminants were tested in NORTH LIBERTY WATER SUPPLY's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does NORTH LIBERTY WATER SUPPLY have any EPA violations?
Yes, NORTH LIBERTY WATER SUPPLY has 7 EPA violation(s) on record, with the most recent in 2005. Violation types include MR, MCL. 1 are health-based violations.
How many people does NORTH LIBERTY WATER SUPPLY serve?
NORTH LIBERTY WATER SUPPLY serves approximately 20,491 people, Iowa. The system provides water to 1 community: North Liberty.
What type of water does NORTH LIBERTY WATER SUPPLY provide?
NORTH LIBERTY WATER SUPPLY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA5252072.
How does NORTH LIBERTY WATER SUPPLY compare to other utilities in Iowa?
NORTH LIBERTY WATER SUPPLY scores 81/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Iowa state page for a full comparison of water systems.