STATE REPORT AZ 242 HEALTH VIOLATIONS

Arizona Water Quality & Safety Report

46 ZIP codes · 166 water systems · UPC plumbing code · Updated 2026-03-16

Data: EPA SDWIS, NWS, State plumbing boards, Rewiring America Last verified: 2026-03-16

46
ZIP Codes
166
Water Systems
46
ZIPs with Violations
UPC
Plumbing Code
5
Avg Rebate Programs

Overview

We track water quality, weather alerts, plumbing regulations, and energy rebates for 46 ZIP codes across Arizona, covering 166 community water systems that serve approximately 5,603,047 people.

46 of 46 ZIP codes (100%) have recorded EPA violations. 242 health-based violations have been documented.

Plumbing Regulations

Arizona follows the Uniform Plumbing Code (2018 edition).

  • Plumbing code: UPC (2018)
  • Homeowner DIY: Allowed with permit
  • Water heater permit: Required
  • Annual backflow test: Required

Full Arizona regulations →

Energy & Water Rebates

Across 46 tracked ZIP codes in Arizona, residents have access to an average of 5 water-related rebate programs — including incentives for heat pump water heaters, efficient fixtures, and plumbing upgrades.

Check rebates for your ZIP code →

Areas with Most Violations

ZIP CodeCitySafety ScoreViolationsHealth-BasedSystem
86429Bullhead City11321BULLHEAD CITY MOHAVE
85364Yuma50338CITY OF YUMA
85635Sierra Vista4313BELLA VISTA CITY WATER SYSTEM
85138Maricopa42842GW SANTA CRUZ WATER CO
85233Gilbert3644GILBERT, TOWN OF
86001Flagstaff3320FLAGSTAFF CITY OF
86336Sedona3201ARIZONA WATER CO - SEDONA
85117Apache Junction2637ARIZONA WATER CO - APACHE JUNCTION
85224Chandler2594CHANDLER CITY OF
85001Phoenix24822PHOENIX CITY OF

Lead & Copper

  • 0 ZIP codes exceed the EPA lead action level

Radon Risk

  • High risk (Zone 1): 0 ZIP codes (0%)
  • Moderate risk (Zone 2): 0 ZIP codes
  • Low risk (Zone 3): 0 ZIP codes

All 46 ZIP Codes in Arizona

Data Sources

Updated daily.

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