PFAS in Los Fresnos, TX Drinking Water
PFAS data for Los Fresnos, Texas · 24,927 residents · 1 ZIP code
ZipCheckup's reading of PFAS in Los Fresnos, Texas: the highest detected level is 0.0106 ppt; the EPA limit is 4 ppt (PFOA/PFOS individually). PFAS carries a high health-risk designation.
People in Los Fresnos, Texas who get water from the public supply are among residents whose systems have returned PFAS detections in EPA compliance testing.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-07-13
PFAS in Los Fresnos Tap Water
PFAS has been detected in Los Fresnos, Texas drinking water at a maximum level of 0.0106 detections — relative to the EPA MCL of 4 ppt (PFOA/PFOS individually).
This analysis covers 24,927 residents across 1 ZIP code in Los Fresnos.
Los Fresnos's overall water quality grade is C (69/100).
Is PFAS in Los Fresnos Water Safe?
PFAS was detected in Los Fresnos 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 |
|---|---|---|---|
| 78566 | 9 detections | 4 ppt (PFOA/PFOS individually) | Not comparable |
Average pfas level across Los Fresnos: 9 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 Los Fresnos 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.