C52/100
Defiance NTUA — Water Quality Report 2026
Serving 1,659 people · Arizona
Water Source
Groundwater
County
—
System ID
NN3500277
Violations
45
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 2021.
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 Defiance NTUA
Is Defiance NTUA water safe to drink?
Defiance NTUA water receives a grade of C (52/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 45 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has Defiance NTUA detected?
1 contaminants were tested in Defiance NTUA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Defiance NTUA have any EPA violations?
Yes, Defiance NTUA has 45 EPA violation(s) on record, with the most recent in 2021. Violation types include MR, MON, Other.
How many people does Defiance NTUA serve?
Defiance NTUA serves approximately 1,659 people, Arizona. The system provides water to 1 community: Gallup, West Of.
What type of water does Defiance NTUA provide?
Defiance NTUA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NN3500277.
How does Defiance NTUA compare to other utilities in Arizona?
Defiance NTUA scores 52/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Arizona state page for a full comparison of water systems.