PFAS in Watsonville, CA Drinking Water
PFAS data for Watsonville, California · 67,320 residents · 2 ZIP codes
Across the water systems that serve Watsonville, 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 Watsonville Tap Water
PFAS has been detected in Watsonville, California drinking water at a maximum level of 0.0067 ppt — below the EPA MCL of 4 ppt (PFOA/PFOS individually).
This analysis covers 67,320 residents across 2 ZIP codes in Watsonville.
Watsonville's overall water quality grade is B (76/100).
Is PFAS in Watsonville 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 |
|---|---|---|---|
| 95076 | 20 detections | 4 ppt (PFOA/PFOS individually) | Exceeds limit |
| 95077 | 20 detections | 4 ppt (PFOA/PFOS individually) | Exceeds limit |
Average pfas level across Watsonville: 20 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 Watsonville 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.