C58/100
Shonto Junction NTUA — Water Quality Report 2026
Serving 1,146 people · Arizona
Water Source
Groundwater
County
—
System ID
NN0400326
Violations
35
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 Shonto Junction NTUA
Is Shonto Junction NTUA water safe to drink?
Shonto Junction NTUA water receives a grade of C (58/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 35 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has Shonto Junction NTUA detected?
1 contaminants were tested in Shonto Junction NTUA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Shonto Junction NTUA have any EPA violations?
Yes, Shonto Junction NTUA has 35 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, TT, Other. 1 are health-based violations.
How many people does Shonto Junction NTUA serve?
Shonto Junction NTUA serves approximately 1,146 people, Arizona. The system provides water to 1 community: Shonto Junction.
What type of water does Shonto Junction NTUA provide?
Shonto Junction NTUA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NN0400326.
How does Shonto Junction NTUA compare to other utilities in Arizona?
Shonto Junction NTUA scores 58/100 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.