Arsenic in Sun City West, AZ Drinking Water
Arsenic data for Sun City West, Arizona · 25,796 residents · 2 ZIP codes
Routine testing in Sun City West, Arizona turned up Arsenic — samples from the public supply came back positive, placing this contaminant on the list of substances residents here have a concrete reason to look into.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Arsenic in Sun City West Tap Water
Arsenic has been detected in Sun City West, Arizona drinking water at a maximum level of 8.6 ppb — below the EPA MCL of 10 ppb.
This analysis covers 25,796 residents across 2 ZIP codes in Sun City West.
Sun City West's overall water quality grade is B (73/100).
Is Arsenic in Sun City West Water Safe?
Arsenic was detected in Sun City West water but currently falls within EPA limits. However, some health organizations argue the EPA MCL may not be protective enough.
If you are concerned, a reverse osmosis filter can reduce arsenic levels further.
Arsenic Levels by ZIP Code
Average arsenic level across Sun City West: 8.6 ppb
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 Sun City West 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.