B63/100
Houck-Querino Canyon NTUA — Water Quality Report 2026
Serving 1,023 people · Arizona
Water Source
Groundwater
County
—
System ID
NN0400280
Violations
14
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.33 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 Houck-Querino Canyon NTUA
Is Houck-Querino Canyon NTUA water safe to drink?
Houck-Querino Canyon NTUA water receives a grade of B (63/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has Houck-Querino Canyon NTUA detected?
2 contaminants were tested in Houck-Querino Canyon 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 Houck-Querino Canyon NTUA have any EPA violations?
Yes, Houck-Querino Canyon NTUA has 14 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, TT, MCL. 3 are health-based violations.
How many people does Houck-Querino Canyon NTUA serve?
Houck-Querino Canyon NTUA serves approximately 1,023 people, Arizona. The system provides water to 1 community: Houck, Querino Canyon.
What type of water does Houck-Querino Canyon NTUA provide?
Houck-Querino Canyon NTUA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NN0400280.
How does Houck-Querino Canyon NTUA compare to other utilities in Arizona?
Houck-Querino Canyon NTUA scores 63/100 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.