PFAS in Alameda, CA Drinking Water
PFAS data for Alameda, California · 1,442,800 residents · 2 ZIP codes
If you rely on a public water system in Alameda, California, PFAS is a contaminant your utility has been required to test for — and EPA records show it has been detected at measurable levels, making it worth understanding as part of your tap water's detection record.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
PFAS in Alameda Tap Water
PFAS has been detected in Alameda, California drinking water at a maximum level of 0.0052 ppt — below the EPA MCL of 4 ppt (PFOA/PFOS individually).
This analysis covers 1,442,800 residents across 2 ZIP codes in Alameda.
Alameda's overall water quality grade is C (55/100).
Is PFAS in Alameda Water Safe?
PFAS was detected in Alameda 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 or granular activated carbon filter can reduce pfas levels further.
PFAS Levels by ZIP Code
| ZIP Code | PFAS Level | EPA Limit | Status |
|---|---|---|---|
| 94501 | 2 detections | 4 ppt (PFOA/PFOS individually) | OK |
| 94502 | 2 detections | 4 ppt (PFOA/PFOS individually) | OK |
Average pfas level across Alameda: 2 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 Alameda 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.