F7/100

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

Serving 162,110 residents · Arizona

What's In Yuma's Tap Water?

76
Contaminants Tested
0
Exceed EPA Limits
2
Above EPA Goals
2 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
chlorate
240.00 µg/LAbove Goal
Lead (90th percentile)
0.001 mg/L0.015 mg/LAbove Goal

EPA Violation History

38

Violations (last 5yr)

1

Unresolved

13

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: June 1, 2025 – June 30, 2025Rule: Stage 1 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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: December 1, 2024 – December 31, 2024Rule: Stage 1 DBPREnforcement: 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: December 1, 2024 – December 31, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: March 1, 2022 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: March 1, 2022 – March 31, 2022Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: February 1, 2022 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: February 1, 2022 – February 28, 2022Rule: Stage 1 DBPREnforcement: 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: February 1, 2022 – February 28, 2022Rule: Stage 1 DBPREnforcement: 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: February 1, 2022 – February 28, 2022Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: January 1, 2022 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: January 1, 2022 – January 31, 2022Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: December 1, 2021 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: December 1, 2021 – December 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: November 1, 2021 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: November 1, 2021 – November 30, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: October 1, 2021 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: October 1, 2021 – October 31, 2021Rule: Stage 1 DBPREnforcement: 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: October 1, 2021 – October 31, 2021Rule: Stage 1 DBPREnforcement: 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: October 1, 2021 – October 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 2Resolved

Treatment Technique Violation

When: October 1, 2021 – December 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: September 1, 2021 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: September 1, 2021 – September 30, 2021Rule: Stage 1 DBPREnforcement: 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: September 1, 2021 – September 30, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: August 1, 2021 – June 2, 2022Rule: Ground Water RuleEnforcement: 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: August 1, 2021 – August 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: August 1, 2021 – August 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 2Resolved

Maximum Residual Disinfectant Level Violation

When: August 1, 2021 – August 31, 2021Rule: Stage 1 DBPREnforcement: 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: August 1, 2021 – August 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: July 1, 2021 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: July 1, 2021 – July 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: June 1, 2021 – June 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: June 1, 2021 – June 30, 2021Rule: Stage 1 DBPREnforcement: 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: June 1, 2021 – June 30, 2021Rule: Stage 1 DBPREnforcement: 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: June 1, 2021 – June 30, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: May 1, 2021 – June 2, 2022Rule: Ground Water RuleEnforcement: 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: May 1, 2021 – May 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Maximum Residual Disinfectant Level Violation

When: May 1, 2021 – May 31, 2021Rule: Stage 1 DBPREnforcement: 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: May 1, 2021 – May 31, 2021Rule: Stage 1 DBPREnforcement: 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

Quechan Utility
Population Served

5,660

Water Source

Groundwater

System ID

090400089

FOOTHILLS UTILITIES KINGMAN EAST
Population Served

2,538

Water Source

Groundwater

System ID

AZ0408035

ROSE VALLEY WATER COMPANY
Population Served

6,202

Water Source

Groundwater

System ID

AZ0407065

FOOTHILLS WATER AND SEWER LLC
Population Served

32,425

Water Source

Surface Water

System ID

AZ0414004

CITY OF YUMA
Population Served

103,264

Water Source

Surface Water

System ID

AZ0414024

USMC YUMA MAIN SYSTEM
Population Served

6,324

Water Source

Surface Water

System ID

AZ0414082

ASPC YUMA
Population Served

4,197

Water Source

Groundwater

System ID

AZ0414099

HOWARD CANTONMENT AREA
Population Served

1,500

Water Source

Groundwater

System ID

AZ0414403

Frequently Asked Questions About Yuma Water

Is Yuma tap water safe to drink?

Yuma, Arizona tap water receives a grade of F (7/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 2837 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.

What contaminants are in Yuma's water?

Of the 77 contaminants tested in Yuma's water supply, the most notable include Copper (90th percentile), Lead (90th percentile), chlorate. 1 contaminant(s) exceed EPA legal limits (MCLs). 3 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.

Does Yuma have any water quality violations?

Yes, Yuma has 2837 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, RPT, TT. 96 of these are health-based violations, which are the most serious category.

Do I need a water filter in Yuma?

Based on EPA data, using a water filter in Yuma 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 Yuma's tap water come from?

Yuma's drinking water is sourced from groundwater and supplied by Quechan Utility and 7 other water system(s). The system serves approximately 162,110 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.

How often is Yuma'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. Yuma'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 Yuma's water compare to other cities in Arizona?

Yuma's water quality score of 7/100 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 Yuma's water quality?

If you have concerns about Yuma'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 (Quechan Utility) 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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