D39/100
Lukachukai NTUA — Water Quality Report 2026
Serving 1,659 people · Arizona
Water Source
Groundwater
County
—
System ID
NN0403047
Violations
34
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.49 mg/L | 1.30 mg/L | Over Limit |
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 2020.
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 Lukachukai NTUA
Is Lukachukai NTUA water safe to drink?
Lukachukai NTUA water receives a grade of D (39/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 34 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has Lukachukai NTUA detected?
2 contaminants were tested in Lukachukai NTUA's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does Lukachukai NTUA have any EPA violations?
Yes, Lukachukai NTUA has 34 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, Other, MCL. 4 are health-based violations.
How many people does Lukachukai NTUA serve?
Lukachukai NTUA serves approximately 1,659 people, Arizona. The system provides water to 1 community: Lukachukai.
What type of water does Lukachukai NTUA provide?
Lukachukai NTUA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NN0403047.
How does Lukachukai NTUA compare to other utilities in Arizona?
Lukachukai NTUA scores 39/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Arizona state page for a full comparison of water systems.