F0/100
ARIZONA WATER CO - PINAL VALLEY — Water Quality Report 2026
Serving 134,432 people · Arizona
Water Source
Groundwater
County
—
System ID
AZ0411009
Violations
520
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
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 20, 2025Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify 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: April 1, 2025 – June 30, 2025Enforcement: 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 ARIZONA WATER CO - PINAL VALLEY
Is ARIZONA WATER CO - PINAL VALLEY water safe to drink?
ARIZONA WATER CO - PINAL VALLEY water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 520 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ARIZONA WATER CO - PINAL VALLEY detected?
73 contaminants were tested in ARIZONA WATER CO - PINAL VALLEY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ARIZONA WATER CO - PINAL VALLEY have any EPA violations?
Yes, ARIZONA WATER CO - PINAL VALLEY has 520 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, RPT, MCL. 3 are health-based violations.
How many people does ARIZONA WATER CO - PINAL VALLEY serve?
ARIZONA WATER CO - PINAL VALLEY serves approximately 134,432 people, Arizona. The system provides water to 1 community: Casa Grande.
What type of water does ARIZONA WATER CO - PINAL VALLEY provide?
ARIZONA WATER CO - PINAL VALLEY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0411009.
How does ARIZONA WATER CO - PINAL VALLEY compare to other utilities in Arizona?
ARIZONA WATER CO - PINAL VALLEY 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.