F0/100

PIMA UTILITIES — Water Quality Report 2026

Serving 20,000 people · Arizona

Water Source

Groundwater

County

—

System ID

AZ0407120

Violations

226

Contaminant Test Results

1 contaminant above EPA health goals

Contaminant	Detected	Limit (MCL)	Goal (MCLG)	Status
Lead (90th percentile)	0.010 mg/L	0.015 mg/L	0 mg/L	Above Goal

EPA Violation History

Violations (last 5yr)

Unresolved

Health-Related

TIER 3Resolved

Monitoring Violation

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

When: September 1, 2024 – September 30, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway

TIER 3Unresolved

Failed to conduct Level 1 Assessment

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

When: August 22, 2024Rule: Consumer Confidence RuleEnforcement: 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: August 1, 2024 – August 31, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway

TIER 1 — URGENTResolved

Maximum Contaminant Level Violation

When: August 1, 2024 – August 31, 2024Rule: Total Coliform 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: June 1, 2024 – June 30, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway

TIER 1 — URGENTResolved

Maximum Contaminant Level Violation

When: June 1, 2024 – June 30, 2024Rule: Total Coliform 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: January 1, 2024 – December 31, 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: January 1, 2024 – December 31, 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: January 1, 2023 – November 1, 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: January 1, 2023 – November 1, 2023Enforcement: Resolving — corrective action underway

TIER 3Unresolved

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, 2021 – September 30, 2021Verify on EPA.gov

TIER 3Unresolved

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, 2021 – September 30, 2021Verify on EPA.gov

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 PIMA UTILITIES

Is PIMA UTILITIES water safe to drink?

PIMA UTILITIES water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 226 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has PIMA UTILITIES detected?

66 contaminants were tested in PIMA UTILITIES's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does PIMA UTILITIES have any EPA violations?

Yes, PIMA UTILITIES has 226 EPA violation(s) on record, with the most recent in 2024. Violation types include MON, MR, MCL. 4 are health-based violations.

How many people does PIMA UTILITIES serve?

PIMA UTILITIES serves approximately 20,000 people, Arizona. The system provides water to 1 community: Chandler.

What type of water does PIMA UTILITIES provide?

PIMA UTILITIES sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0407120.

How does PIMA UTILITIES compare to other utilities in Arizona?

PIMA UTILITIES 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

Chandler