TapSafetyReport
F13/100

El Mirage Tap Water Quality: Is It Safe to Drink? (2026 Report)

Serving 333,639 residents · Arizona

What's In El Mirage's Tap Water?

69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
vanadium
24.10 µg/L—Above Goal

EPA Violation History

18

Violations (last 5yr)

0

Unresolved

1

Health-Related

TIER 3Resolved

Failed to complete routine monitoring

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

When: July 1, 2025 – July 31, 2025Rule: Surface Water Treatment RuleEnforcement: 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, 2024 – June 30, 2024Enforcement: 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, 2024 – June 30, 2024Enforcement: 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, 2024 – June 30, 2024Enforcement: 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: October 1, 2023 – December 31, 2023Enforcement: 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, 2023 – September 30, 2023Enforcement: 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, 2023 – September 30, 2023Enforcement: 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, 2023 – June 30, 2023Enforcement: 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, 2023 – June 30, 2023Enforcement: 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, 2023 – June 30, 2023Enforcement: 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, 2023 – June 30, 2023Enforcement: 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, 2023 – June 30, 2023Enforcement: 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: 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: 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: October 1, 2022 – December 31, 2022Enforcement: Resolving — corrective action underway
TIER 2Resolved

Public notification violation

When: January 1, 2022 – June 30, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring / Reporting Violation

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

When: October 1, 2021 – November 3, 2021Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to issue ongoing public notification

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

When: July 1, 2021 – July 14, 2021Rule: Ground Water 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

Water Utility Details

EPCOR - CHAPARRAL CITY
Population Served

26,026

Water Source

Surface Water

System ID

AZ0407017

EPCOR - PARADISE VALLEY/SCOTTSDALE
Population Served

14,107

Water Source

Purchased Surface Water

System ID

AZ0407056

EPCOR - SUN CITY
Population Served

38,016

Water Source

Groundwater

System ID

AZ0407099

EPCOR- RIO VERDE
Population Served

5,330

Water Source

Groundwater

System ID

AZ0407121

EPCOR - SUN CITY WEST
Population Served

25,796

Water Source

Groundwater

System ID

AZ0407150

EPCOR - ANTHEM
Population Served

23,826

Water Source

Surface Water

System ID

AZ0407504

EPCOR - NORTH EAST AGUA FRIA
Population Served

14,723

Water Source

Groundwater

System ID

AZ0407531

EPCOR - TIERRA DEL RIO
Population Served

4,868

Water Source

Groundwater

System ID

AZ0407532

EPCOR - AGUA FRIA
Population Served

127,718

Water Source

Surface Water

System ID

AZ0407695

EPCOR - LAKE HAVASU
Population Served

4,788

Water Source

Groundwater

System ID

AZ0408015

EPCOR - WILLOW VALLEY/KING STREET
Population Served

3,408

Water Source

Groundwater

System ID

AZ0408040

EL MIRAGE CITY OF
Population Served

39,884

Water Source

Groundwater

System ID

AZ0407091

EPCOR - TUBAC
Population Served

2,076

Water Source

Groundwater

System ID

AZ0412001

EPCOR - MOOVALYA KEYS
Population Served

1,298

Water Source

Surface Water

System ID

AZ0415006

EPCOR - LAKESIDE
Population Served

1,775

Water Source

Surface Water

System ID

AZ0415010

Frequently Asked Questions About El Mirage Water

Is El Mirage tap water safe to drink?

El Mirage, Arizona tap water receives a grade of F (13/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 3045 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.

What contaminants are in El Mirage's water?

Of the 73 contaminants tested in El Mirage's water supply, the most notable include Copper (90th percentile), Lead (90th percentile), strontium, chlorate, vanadium. 1 contaminant(s) exceed EPA legal limits (MCLs). 5 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.

Does El Mirage have any water quality violations?

Yes, El Mirage has 3045 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MR, Other. 95 of these are health-based violations, which are the most serious category.

Do I need a water filter in El Mirage?

Based on EPA data, using a water filter in El Mirage is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.

Where does El Mirage's tap water come from?

El Mirage's drinking water is sourced from surface water and supplied by EPCOR - CHAPARRAL CITY and 14 other water system(s). The system serves approximately 333,639 people. Surface water sources include rivers, lakes, and reservoirs.

How often is El Mirage's water tested?

Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. El Mirage's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.

How does El Mirage's water compare to other cities in Arizona?

El Mirage's water quality score of 13/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Arizona state page to see how all cities in the state compare.

What should I do if I'm concerned about El Mirage's water quality?

If you have concerns about El Mirage's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (EPCOR - CHAPARRAL CITY) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.

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