F0/100
Kayenta NTUA — Water Quality Report 2026
Serving 3,844 people · Arizona
Water Source
Groundwater
County
—
System ID
NN0403003
Violations
103
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
2
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Unresolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 Kayenta NTUA
Is Kayenta NTUA water safe to drink?
Kayenta NTUA water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 103 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has Kayenta NTUA detected?
31 contaminants were tested in Kayenta NTUA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Kayenta NTUA have any EPA violations?
Yes, Kayenta NTUA has 103 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other.
How many people does Kayenta NTUA serve?
Kayenta NTUA serves approximately 3,844 people, Arizona. The system provides water to 1 community: Kayenta.
What type of water does Kayenta NTUA provide?
Kayenta NTUA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NN0403003.
How does Kayenta NTUA compare to other utilities in Arizona?
Kayenta NTUA scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Arizona state page for a full comparison of water systems.