Rockwall County, TX
The federal environmental record for Rockwall County (population 131,307): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
1
federal cleanup sites
6
PFAS-detecting water systems
6
TRI facilities
2
open tank releases
Drinking water: PFAS testing
Public water systems serving Rockwall 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 ROCKWALL TX1990001 | PFBA: 9.6 ng/L PFPeA: 7 ng/L PFHxA: 6.3 ng/L | detected |
| CITY OF ROYSE CITY TX1990002 | PFBA: 7.5 ng/L PFHxA: 5.6 ng/L PFPeA: 5.6 ng/L | detected |
| BLACKLAND WSC TX1990004 | PFBA: 10.2 ng/L PFPeA: 6.2 ng/L PFHxA: 5.3 ng/L | detected |
| CITY OF FATE TX1990006 | PFBA: 11.9 ng/L PFPeA: 8.7 ng/L PFHxA: 7.5 ng/L | detected |
| R C H WSC TX1990012 | PFBA: 9 ng/L PFPeA: 7.5 ng/L PFHxA: 6.7 ng/L | detected |
| CITY OF HEATH TX1990014 | 6:2 FTS: 8.8 ng/L PFPeA: 5.9 ng/L PFHxA: 5.5 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
6 facilities in Rockwall filed TRI reports for 2024, totalling 992 lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| CHANNELL ROCKWALL TEXAS | ROCKWALL | Styrene | 991 lb |
| WHITMORE MANUFACTURING CO | ROCKWALL | Zinc (fume or dust), Zinc compounds | 1 lb |
| HOLCIM-SOR INC.- ROCKWALL RM | ROCKWALL | - | 0 lb |
| REDI-MIX - ROCKWALL | ROCKWALL | Lead | 0 lb |
| CHRYSO INC. | ROYSE CITY | - | 0 lb |
| EKJ ENTERPRISES LP | ROCKWALL | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 93 tank facilities in Rockwall: 107 tanks in service and 140 closed. 45 fuel releases are on record, of which 2 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Rockwall 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 - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Rockwall, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ROCKWALL MERCURYROCKWALL