Willacy County, TX
The federal environmental record for Willacy County (population 20,037): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
0
federal cleanup sites
2
PFAS-detecting water systems
0
TRI facilities
4
open tank releases
Drinking water: PFAS testing
Public water systems serving Willacy with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| CITY OF RAYMONDVILLE TX2450001 | PFBA: 5.9 ng/L | detected |
| SEBASTIAN MUD TX2450006 | PFBA: 13 ng/L PFHxA: 4.4 ng/L PFPeA: 4.3 ng/L | detected |
On a system with detections? Testing and treatment options
Underground fuel tanks
EPA's UST Finder records 74 tank facilities in Willacy: 41 tanks in service and 154 closed. 32 fuel releases are on record, of which 4 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Willacy as Zone 3, the lowest predicted indoor radon (under 2 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39