B60/100
Pinon-District 4 NTUA — Water Quality Report 2026
Serving 5,195 people · Arizona
Water Source
Groundwater
County
—
System ID
NN0403004
Violations
37
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 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 Pinon-District 4 NTUA
Is Pinon-District 4 NTUA water safe to drink?
Pinon-District 4 NTUA water receives a grade of B (60/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has Pinon-District 4 NTUA detected?
31 contaminants were tested in Pinon-District 4 NTUA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Pinon-District 4 NTUA have any EPA violations?
Yes, Pinon-District 4 NTUA has 37 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, Other.
How many people does Pinon-District 4 NTUA serve?
Pinon-District 4 NTUA serves approximately 5,195 people, Arizona. The system provides water to 1 community: Pinon, South Pinon, Burnt Corn, Blue Gap.
What type of water does Pinon-District 4 NTUA provide?
Pinon-District 4 NTUA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NN0403004.
How does Pinon-District 4 NTUA compare to other utilities in Arizona?
Pinon-District 4 NTUA scores 60/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Arizona state page for a full comparison of water systems.