B79/100
Vaya Chin Intertie — Water Quality Report 2026
Serving 1,151 people · Arizona
Water Source
Groundwater
County
—
System ID
090400020
Violations
8
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 360.00 µg/L | — | Above Goal |
vanadium | 37.00 µg/L | — | Above Goal |
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 2014.
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 Vaya Chin Intertie
Is Vaya Chin Intertie water safe to drink?
Vaya Chin Intertie water receives a grade of B (79/100), which is considered good. Out of 51 contaminants tested, none exceed EPA legal limits. 3 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has Vaya Chin Intertie detected?
51 contaminants were tested in Vaya Chin Intertie's water. Notable contaminants include Lead (90th percentile), chlorate, vanadium. No contaminants exceed EPA legal limits. 3 exceed EPA health goals (MCLGs).
Does Vaya Chin Intertie have any EPA violations?
Yes, Vaya Chin Intertie has 8 EPA violation(s) on record, with the most recent in 2014. Violation types include MR, MCL. 1 are health-based violations.
How many people does Vaya Chin Intertie serve?
Vaya Chin Intertie serves approximately 1,151 people, Arizona. The system provides water to 1 community: Vaya Chin, Hickiwan, San Simon Village/S.
What type of water does Vaya Chin Intertie provide?
Vaya Chin Intertie sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is 090400020.
How does Vaya Chin Intertie compare to other utilities in Arizona?
Vaya Chin Intertie scores 79/100 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.