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WaterSafety

Phoenix City Of

Phoenix, Arizona · PWSID: AZ0407025

D
Water Safety Score
60/100
1,695,000
Population Served
Surface water
Source Type
2
Health Violations
0
Contaminant Exceedances

Detected Contaminants

ContaminantDetected LevelMCL (Limit)StatusSample Date
Arsenic5 ppb10 ppbWithin LimitOct 1, 2018
Chlorine2 ppm4 ppmWithin LimitJan 1, 2021

Violation History

Arsenic
Health-BasedOct 1, 2018 - Feb 8, 2019
Resolved
Enforcement: 6803
Chlorine
Treatment TechniqueJan 1, 2021 - Jan 12, 2021
Resolved
Enforcement: 6809
Chlorine
Treatment TechniqueJan 1, 2021 - Jan 12, 2021
Resolved
Enforcement: 6809
Arsenic
Health-BasedJan 1, 2023 - Mar 31, 2023
Open
Contaminant 8000
MonitoringMay 1, 2025 - May 31, 2025
Open
Enforcement: 6843
Contaminant 0200
Treatment TechniqueMay 1, 2025 - May 31, 2025
Open
Enforcement: 6847

Frequently Asked Questions

Phoenix City Of has a Water Safety Score of D (60/100). The system serves 1,695,000 people and has 2 health violations on record. Check the contaminant table above for specific detected substances.

Phoenix City Of has 0 contaminant exceedances above EPA health guidelines. See the full contaminant detection table above for all tested substances and their levels relative to legal limits and health guidelines.

The Water Safety Score (0-100, grades A through F) is based on contaminant levels relative to legal limits, health guideline exceedances, violation history, and enforcement actions. Higher scores indicate fewer concerns.

If your water system has violations, request the Consumer Confidence Report from your utility, consider getting an independent water test from a certified lab, and look into certified water filters for specific contaminants of concern. For lead, run cold water for 30 seconds before drinking.

Sources: EPA SDWIS, EWG Tap Water Database
Last updated:

Water quality data sourced from EPA's Safe Drinking Water Information System (SDWIS). Safety scores are calculated based on contaminant levels, violations, and enforcement history. This is not a substitute for your utility's official Consumer Confidence Report.