PFAS in Fresno, CA Drinking Water
PFAS data for Fresno, California · 620,656 residents · 58 ZIP codes
ZipCheckup's reading of PFAS in Fresno, California: the highest detected level is 0.047 ppt; the EPA limit is 4 ppt (PFOA/PFOS individually). PFAS carries a high health-risk designation.
For residents of Fresno, California, PFAS has appeared in public water supply sampling data.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-07-13
PFAS in Fresno Tap Water
PFAS has been detected in Fresno, California drinking water at a maximum level of 0.047 detections — relative to the EPA MCL of 4 ppt (PFOA/PFOS individually).
This analysis covers 620,656 residents across 58 ZIP codes in Fresno.
Fresno's overall water quality grade is B (73/100).
Is PFAS in Fresno Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis or granular activated carbon filter certified under NSF 53 / NSF 58 and testing your water independently.
PFAS Levels by ZIP Code
| ZIP Code | PFAS Level | EPA Limit | Status |
|---|---|---|---|
| 93727 | 260 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93704 | 231 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93710 | 231 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93711 | 231 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93720 | 231 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93701 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93702 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93703 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93705 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93706 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93721 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93722 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93723 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93725 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93726 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93728 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93730 | 213 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93650 | 18 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
| 93740 | 7 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
Average pfas level across Fresno: 198.16 ppt
Health Effects of PFAS
- Increased risk of kidney and testicular cancer
- Thyroid disease and immune system suppression
- Reproductive problems and reduced fertility
- Elevated cholesterol and liver effects
- Developmental effects in infants and children
Health risk severity: High. Governed by the PFAS National Primary Drinking Water Regulation (2024).
How PFAS Gets Into Drinking Water
- Firefighting foam (AFFF) used at military bases and airports
- Industrial manufacturing (non-stick coatings, stain-resistant fabrics)
- Wastewater treatment plants that receive industrial discharge
- Landfill leachate from PFAS-containing consumer products
What to Do About PFAS in Fresno Water
- Install a reverse osmosis system (most effective — removes 90%+ of PFAS)
- Granular activated carbon (GAC) filters remove some PFAS compounds
- Look for NSF 53 or NSF 58 certification specifically tested for PFAS
- Pitcher filters with activated carbon provide partial reduction
Look for filters certified under NSF 53 / NSF 58 for pfas removal.