F0/100
EPCOR- RIO VERDE — Water Quality Report 2026
Serving 5,330 people · Arizona
Water Source
Groundwater
County
—
System ID
AZ0407121
Violations
96
Contaminant Test Results
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2025 – April 30, 2025Rule: Stage 1 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 19, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2022 – July 31, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
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 EPCOR- RIO VERDE
Is EPCOR- RIO VERDE water safe to drink?
EPCOR- RIO VERDE water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 96 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has EPCOR- RIO VERDE detected?
31 contaminants were tested in EPCOR- RIO VERDE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does EPCOR- RIO VERDE have any EPA violations?
Yes, EPCOR- RIO VERDE has 96 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MON, RPT. 3 are health-based violations.
How many people does EPCOR- RIO VERDE serve?
EPCOR- RIO VERDE serves approximately 5,330 people, Arizona. The system provides water to 1 community: Rio Verde.
What type of water does EPCOR- RIO VERDE provide?
EPCOR- RIO VERDE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0407121.
How does EPCOR- RIO VERDE compare to other utilities in Arizona?
EPCOR- RIO VERDE 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.