Fluoride in Arizona Drinking Water — 16 ZIPs Tested
EPA data analysis for fluoride in Arizona drinking water systems
Fluoride Contamination in Arizona
ZipCheckup analyzed drinking water data across 553 ZIP codes in Arizona for fluoride contamination. 16 ZIP codes have reported fluoride detections, and 0 have EPA violations on record.
EPA Standard for Fluoride
The EPA maximum contaminant level (MCL) for fluoride is 4.0 mg/L (MCL) / 2.0 mg/L (SMCL), governed by the National Primary Drinking Water Regulations. Water systems that exceed this limit must take corrective action and notify consumers.
Worst ZIP Codes for Fluoride in Arizona
These ZIP codes reported the highest fluoride levels in Arizona based on CCR reports and EPA data:
Lowest Fluoride Levels in Arizona
These ZIP codes had the lowest reported fluoride detections in Arizona:
Health Effects of Fluoride
At levels above the EPA MCL of 4 mg/L, fluoride can cause skeletal fluorosis (bone pain, joint stiffness). The secondary standard of 2 mg/L is set to prevent dental fluorosis in children. At levels used in water fluoridation (0.7 mg/L), fluoride helps prevent tooth decay.
How to Remove Fluoride From Drinking Water
The most effective treatment for fluoride removal is Reverse Osmosis or Activated Alumina. Look for filters certified under NSF 58 standards.
Check Your ZIP Code
Use the ZipCheckup water quality search to see fluoride data for your specific water system in Arizona.
Worst ZIP Codes for Fluoride in Arizona
Ranked by highest fluoride detection level.
| Rank | ZIP Code | City | Level Detected | EPA Limit | Status |
|---|---|---|---|---|---|
| 1 | 85621 | Nogales | 3.3 ppm | 4 ppm | Within Limit |
| 2 | 85628 | Nogales | 3.3 ppm | 4 ppm | Within Limit |
| 3 | 85662 | Nogales | 3.3 ppm | 4 ppm | Within Limit |
| 4 | 85122 | Casa Grande | 2.33 ppm | 4 ppm | Within Limit |
| 5 | 85123 | Arizona City | 2.33 ppm | 4 ppm | Within Limit |
| 6 | 85128 | Coolidge | 2.33 ppm | 4 ppm | Within Limit |
| 7 | 85130 | Casa Grande | 2.33 ppm | 4 ppm | Within Limit |
| 8 | 85172 | Stanfield | 2.33 ppm | 4 ppm | Within Limit |
| 9 | 85193 | Casa Grande | 2.33 ppm | 4 ppm | Within Limit |
| 10 | 85194 | Casa Grande | 2.33 ppm | 4 ppm | Within Limit |
| 11 | 85222 | Casa Grande | 2.33 ppm | 4 ppm | Within Limit |
| 12 | 85230 | Casa Grande | 2.33 ppm | 4 ppm | Within Limit |
| 13 | 85293 | Casa Grande | 2.33 ppm | 4 ppm | Within Limit |
| 14 | 85294 | Casa Grande | 2.33 ppm | 4 ppm | Within Limit |
| 15 | 86426 | Fort Mohave | 2.2 ppm | 4 ppm | Within Limit |
| 16 | 86427 | Fort Mohave | 2.2 ppm | 4 ppm | Within Limit |
Lowest Fluoride Levels in Arizona
Cities with Fluoride Data in Arizona
7 cities in Arizona have fluoride testing data available.