Tucson City Of
Tucson, Arizona · PWSID: AZ0410112
Detected Contaminants
| Contaminant | Detected Level | MCL (Limit) | Status | Sample Date |
|---|---|---|---|---|
| Gross Alpha | 7.5 pCi/L | 15 pCi/L | Within Limit | Jan 1, 2019 |
| Uranium | 15 ppb | 30 ppb | Within Limit | Jan 1, 2019 |
| Gross Beta | 25 pCi/L | 50 pCi/L | Within Limit | Jan 1, 2019 |
| Total Trihalomethanes | 40 ppb | 80 ppb | Within Limit | May 1, 2019 |
| Haloacetic Acids (HAA5) | 30 ppb | 60 ppb | Within Limit | May 1, 2019 |
| Nitrate | 5 ppm | 10 ppm | Within Limit | Jan 1, 2021 |
| Arsenic | 5 ppb | 10 ppb | Within Limit | Jan 1, 2019 |
| Barium | 1000 ppb | 2000 ppb | Within Limit | Jan 1, 2019 |
| Cadmium | 2.5 ppb | 5 ppb | Within Limit | Jan 1, 2019 |
| Chromium | 50 ppb | 100 ppb | Within Limit | Jan 1, 2019 |
| Cyanide | 100 ppb | 200 ppb | Within Limit | Jan 1, 2019 |
| Fluoride | 2000 ppb | 4000 ppb | Within Limit | Jan 1, 2019 |
| Mercury | 1 ppb | 2 ppb | Within Limit | Jan 1, 2019 |
| Antimony | 3 ppb | 6 ppb | Within Limit | Jan 1, 2019 |
| Beryllium | 2 ppb | 4 ppb | Within Limit | Jan 1, 2019 |
| Thallium | 1 ppb | 2 ppb | Within Limit | Jan 1, 2019 |
| Selenium | 25 ppb | 50 ppb | Within Limit | Jan 1, 2019 |
| Trichloroethylene | 2.5 ppb | 5 ppb | Within Limit | Jan 1, 2019 |
| PFOS/PFOA (PFAS) | 2 ppt | 4 ppt | Within Limit | Jan 1, 2019 |
| Atrazine | 1.5 ppb | 3 ppb | Within Limit | Jan 1, 2019 |
| Benzene | 2.5 ppb | 5 ppb | Within Limit | Jan 1, 2019 |
Violation History
Frequently Asked Questions
Tucson City Of has a Water Safety Score of B (80/100). The system serves 732,906 people and has 0 health violations on record. Check the contaminant table above for specific detected substances.
Tucson 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.
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.