PFAS in Port Costa, CA Drinking Water
PFAS data for Port Costa, California · 27,131 residents · 1 ZIP code
Across the water systems that serve Port Costa, California, PFAS has appeared in EPA compliance samples — standard municipal treatment targets this contaminant, though detections in the compliance record indicate it has reached household taps at measurable levels.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
PFAS in Port Costa Tap Water
PFAS has been detected in Port Costa, California drinking water at a maximum level of 0.0052 ppt — below the EPA MCL of 4 ppt (PFOA/PFOS individually).
This analysis covers 27,131 residents across 1 ZIP code in Port Costa.
Port Costa's overall water quality grade is B (73/100).
Is PFAS in Port Costa Water Safe?
PFAS was detected in Port Costa 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 |
|---|---|---|---|
| 94569 | 2 detections | 4 ppt (PFOA/PFOS individually) | OK |
Average pfas level across Port Costa: 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 Port Costa 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.