A97/100
EPCOR - TIERRA DEL RIO — Water Quality Report 2026
Serving 4,868 people · Arizona
Water Source
Groundwater
County
—
System ID
AZ0407532
Violations
3
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2012.
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 - TIERRA DEL RIO
Is EPCOR - TIERRA DEL RIO water safe to drink?
EPCOR - TIERRA DEL RIO water receives a grade of A (97/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has EPCOR - TIERRA DEL RIO detected?
31 contaminants were tested in EPCOR - TIERRA DEL RIO's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does EPCOR - TIERRA DEL RIO have any EPA violations?
Yes, EPCOR - TIERRA DEL RIO has 3 EPA violation(s) on record, with the most recent in 2012. Violation types include Other.
How many people does EPCOR - TIERRA DEL RIO serve?
EPCOR - TIERRA DEL RIO serves approximately 4,868 people, Arizona. The system provides water to 1 community: Peoria.
What type of water does EPCOR - TIERRA DEL RIO provide?
EPCOR - TIERRA DEL RIO sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0407532.
How does EPCOR - TIERRA DEL RIO compare to other utilities in Arizona?
EPCOR - TIERRA DEL RIO scores 97/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Arizona state page for a full comparison of water systems.