PFAS · Arizona

PFAS in Arizona Drinking Water — 11 ZIPs Tested

EPA data analysis for pfas in Arizona drinking water systems

11
ZIPs with Detections
0
ZIPs with Violations
4 ppt (PFOA/PFOS)
EPA Limit
High
Health Risk
Reverse Osmosis or Granular Activated Carbon
Best Filter Method

PFAS Contamination in Arizona

ZipCheckup analyzed drinking water data across 553 ZIP codes in Arizona for pfas contamination. 11 ZIP codes have reported pfas detections, and 0 have EPA violations on record.

EPA Standard for PFAS

The EPA maximum contaminant level (MCL) for pfas is 4 ppt (PFOA/PFOS), governed by the PFAS NPDWR (2024). Water systems that exceed this limit must take corrective action and notify consumers.

Worst ZIP Codes for PFAS in Arizona

These ZIP codes reported the highest pfas levels in Arizona based on CCR reports and EPA data:

Lowest PFAS Levels in Arizona

These ZIP codes had the lowest reported pfas detections in Arizona:

Health Effects of PFAS

PFAS (per- and polyfluoroalkyl substances) are linked to cancer (kidney, testicular), thyroid disease, immune system suppression, reproductive problems, and elevated cholesterol. These "forever chemicals" persist in the body for years.

How to Remove PFAS From Drinking Water

The most effective treatment for pfas removal is Reverse Osmosis or Granular Activated Carbon. Look for filters certified under NSF 53 / NSF 58 standards.

Check Your ZIP Code

Use the ZipCheckup water quality search to see pfas data for your specific water system in Arizona.

Worst ZIP Codes for PFAS in Arizona

Ranked by highest pfas detection level.

Rank ZIP Code City Level Detected EPA Limit Status
1 85122 Casa Grande 3.45 ppt 4 ppt Within Limit
2 85123 Arizona City 3.45 ppt 4 ppt Within Limit
3 85128 Coolidge 3.45 ppt 4 ppt Within Limit
4 85130 Casa Grande 3.45 ppt 4 ppt Within Limit
5 85172 Stanfield 3.45 ppt 4 ppt Within Limit
6 85193 Casa Grande 3.45 ppt 4 ppt Within Limit
7 85194 Casa Grande 3.45 ppt 4 ppt Within Limit
8 85222 Casa Grande 3.45 ppt 4 ppt Within Limit
9 85230 Casa Grande 3.45 ppt 4 ppt Within Limit
10 85293 Casa Grande 3.45 ppt 4 ppt Within Limit
11 85294 Casa Grande 3.45 ppt 4 ppt Within Limit

Lowest PFAS Levels in Arizona

ZIP Code City Level Detected
85294 Casa Grande 3.45 ppt
85293 Casa Grande 3.45 ppt
85230 Casa Grande 3.45 ppt
85222 Casa Grande 3.45 ppt
85194 Casa Grande 3.45 ppt
85193 Casa Grande 3.45 ppt
85172 Stanfield 3.45 ppt
85130 Casa Grande 3.45 ppt
85128 Coolidge 3.45 ppt
85123 Arizona City 3.45 ppt
Arizona Water Quality Overview: See statewide water quality rankings on the Arizona water quality page.
Learn more about PFAS: Read the full guide on PFAS in drinking water.
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