PFAS in Rio Grande City, TX Drinking Water
PFAS data for Rio Grande City, Texas · 9,639 residents · 1 ZIP code
Because PFAS is associated with health effects at sustained elevated exposures, residents in Rio Grande City, Texas may find it useful that local water systems have returned detectable concentrations — facts that bear on long-term household water decisions.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
PFAS in Rio Grande City Tap Water
PFAS has been detected in Rio Grande City, Texas drinking water at a maximum level of 0.0077 ppt — below the EPA MCL of 4 ppt (PFOA/PFOS individually).
This analysis covers 9,639 residents across 1 ZIP code in Rio Grande City.
Rio Grande City's overall water quality grade is A (89/100).
Is PFAS in Rio Grande City Water Safe?
PFAS was detected in Rio Grande City 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 |
|---|---|---|---|
| 78582 | 8 detections | 4 ppt (PFOA/PFOS individually) | Exceeds limit |
Average pfas level across Rio Grande City: 8 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 Rio Grande City 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.