Arsenic in Tucson, AZ Drinking Water
Arsenic data for Tucson, Arizona · 916,333 residents · 37 ZIP codes
ZipCheckup's reading of Arsenic in Tucson, Arizona: Arsenic carries a high health-risk designation.
Arsenic is regulated under the Safe Drinking Water Act because of its potential health effects at elevated concentrations; for residents of Tucson, Arizona, the relevant fact is that it has shown up in recent EPA compliance samples - point-of-use filtration is one option residents research, alongside reviewing the utility's published treatment data.
Data: EPA SDWIS, CCR Reports, ECHO
Arsenic in Tucson Tap Water
Tucson, Arizona has 1 EPA violation related to arsenic in drinking water.
This analysis covers 916,333 residents across 37 ZIP codes in Tucson.
Is Arsenic in Tucson Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis filter certified under NSF 53 / NSF 58 and testing your water independently.
EPA Violations for Arsenic in Tucson
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2026-01-01 | Arsenic (Known) | Known | 85756 |
Health Effects of Arsenic
- Increased risk of skin, bladder, lung, and kidney cancer
- Cardiovascular disease and type 2 diabetes
- Skin changes (darkening, thickening, lesions)
- Developmental effects in children exposed in utero
Health risk severity: High. Governed by the Arsenic Rule (2006).
How Arsenic Gets Into Drinking Water
- Natural deposits in rock and soil (especially in western U.S.)
- Runoff from orchards and glass/electronics production
- Historical use of arsenic-based pesticides
- Well water in areas with arsenic-rich geology
What to Do About Arsenic in Tucson Water
- Install a reverse osmosis (RO) system certified under NSF 58
- Adsorptive media filters (iron-based) can also reduce arsenic
- Have well water tested if on a private supply
- Boiling water does NOT remove arsenic — it concentrates it
Look for filters certified under NSF 53 / NSF 58 for arsenic removal.