F0/100
SURPRISE CITY OF - MOUNTAIN VISTA — Water Quality Report 2026
Serving 40,007 people · Arizona
Water Source
Groundwater
County
—
System ID
AZ0407500
Violations
410
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
vanadium | 25.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2019.
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 SURPRISE CITY OF - MOUNTAIN VISTA
Is SURPRISE CITY OF - MOUNTAIN VISTA water safe to drink?
SURPRISE CITY OF - MOUNTAIN VISTA water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 410 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SURPRISE CITY OF - MOUNTAIN VISTA detected?
66 contaminants were tested in SURPRISE CITY OF - MOUNTAIN VISTA's water. Notable contaminants include vanadium. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SURPRISE CITY OF - MOUNTAIN VISTA have any EPA violations?
Yes, SURPRISE CITY OF - MOUNTAIN VISTA has 410 EPA violation(s) on record, with the most recent in 2019. Violation types include MR, Other.
How many people does SURPRISE CITY OF - MOUNTAIN VISTA serve?
SURPRISE CITY OF - MOUNTAIN VISTA serves approximately 40,007 people, Arizona. The system provides water to 1 community: Surprise.
What type of water does SURPRISE CITY OF - MOUNTAIN VISTA provide?
SURPRISE CITY OF - MOUNTAIN VISTA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0407500.
How does SURPRISE CITY OF - MOUNTAIN VISTA compare to other utilities in Arizona?
SURPRISE CITY OF - MOUNTAIN VISTA 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.