F0/100
MAQUOKETA MUNICIPAL WATER — Water Quality Report 2026
Serving 6,128 people · Iowa
Water Source
Groundwater
County
—
System ID
IA4950029
Violations
37
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.007 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 MAQUOKETA MUNICIPAL WATER
Is MAQUOKETA MUNICIPAL WATER water safe to drink?
MAQUOKETA MUNICIPAL WATER water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 37 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MAQUOKETA MUNICIPAL WATER detected?
31 contaminants were tested in MAQUOKETA MUNICIPAL WATER's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does MAQUOKETA MUNICIPAL WATER have any EPA violations?
Yes, MAQUOKETA MUNICIPAL WATER has 37 EPA violation(s) on record, with the most recent in 2018. Violation types include MR, MCL. 18 are health-based violations.
How many people does MAQUOKETA MUNICIPAL WATER serve?
MAQUOKETA MUNICIPAL WATER serves approximately 6,128 people, Iowa. The system provides water to 1 community: Maquoketa.
What type of water does MAQUOKETA MUNICIPAL WATER provide?
MAQUOKETA MUNICIPAL WATER sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA4950029.
How does MAQUOKETA MUNICIPAL WATER compare to other utilities in Iowa?
MAQUOKETA MUNICIPAL WATER scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Iowa state page for a full comparison of water systems.