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F0/100

EL MIRAGE CITY OF — Water Quality Report 2026

Serving 39,884 people · Arizona

Water Source
Groundwater
County
—
System ID
AZ0407091
Violations
832

Contaminant Test Results

EPA Violation History

8

Violations (last 5yr)

4

Unresolved

0

Health-Related

TIER 3Unresolved

Monitoring violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2025Rule: Total Coliform RuleVerify on EPA.gov
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: September 1, 2025 – September 30, 2025Rule: Stage 1 DBPRVerify on EPA.gov
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: August 1, 2025 – August 31, 2025Rule: Stage 1 DBPRVerify on EPA.gov
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: July 1, 2025 – July 31, 2025Rule: Stage 1 DBPRVerify on EPA.gov
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2022 – December 31, 2022Enforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2022 – September 30, 2022Enforcement: Resolving — corrective action underway
TIER 3Resolved

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, 2022 – June 30, 2022Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2022 – June 30, 2022Enforcement: 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 EL MIRAGE CITY OF

Is EL MIRAGE CITY OF water safe to drink?

EL MIRAGE CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 832 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has EL MIRAGE CITY OF detected?

66 contaminants were tested in EL MIRAGE CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does EL MIRAGE CITY OF have any EPA violations?

Yes, EL MIRAGE CITY OF has 832 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MR, MON. 3 are health-based violations.

How many people does EL MIRAGE CITY OF serve?

EL MIRAGE CITY OF serves approximately 39,884 people, Arizona. The system provides water to 1 community: El Mirage.

What type of water does EL MIRAGE CITY OF provide?

EL MIRAGE CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0407091.

How does EL MIRAGE CITY OF compare to other utilities in Arizona?

EL MIRAGE CITY OF 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.

Cities Served

El Mirage