Tucson, Arizona Water Quality Report
Comprehensive analysis of tap water safety based on EPA data
Last updated: January 2026
Is Tucson's Water Safe to Drink?
Some Concerns. Tucson's tap water has some contaminants worth monitoring. Consider a water filter for extra protection. Score: 67/100.
Contaminants Found in Tucson's Water
1 contaminants tested • Data from EPA SDWIS database
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
Lead | 0.0006 mg/L | 0.015 mg/L | 4.3% | Safe |
Compliance Violations
Past EPA violations recorded for Tucson's water system
monitoring
Arsenic - 1/1/2021
Resolvedother
Total Trihalomethanes - 5/1/2019
Resolvedother
Haloacetic Acids (HAA5) - 5/1/2019
Resolvedmonitoring
Contaminant 4000 - 1/1/2019
Resolvedmonitoring
Combined Radium - 1/1/2019
ResolvedShowing 5 of 101 violations
About Tucson's Water System
TUCSON CITY OF
- PWS ID:
- AZ0410112
- Population Served:
- 732,906
- Water Source:
- ground
Tucson Water Quality Score
Based on EPA contaminant data and compliance records
Positive Findings
- No violations in the past 3 years
- No health-based (MCL) violations
- All tested contaminants well below EPA limits
- Low lead levels detected
Protect Your Family's Water
Even with good water quality, many families choose to filter their water for extra peace of mind.
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Other Cities in Arizona
Compare water quality with nearby cities.
View all Arizona cities →Frequently Asked Questions
- Where does Tucson's water come from?
- Tucson primarily uses ground water sources.
- How often is Tucson's water tested?
- Water utilities are required to test for contaminants regularly and report results to the EPA.
- Should I use a water filter in Tucson?
- While the water meets EPA standards, many families choose filters for extra peace of mind.