Collin County, TX
The federal environmental record for Collin County (population 1,195,359): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
10
federal cleanup sites
23
PFAS-detecting water systems
30
TRI facilities
8
open tank releases
Drinking water: PFAS testing
Public water systems serving Collin 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 |
|---|---|---|
| TOWN OF PROSPER TX0430009 | PFBA: 8.4 ng/L PFPeA: 7.8 ng/L PFHxA: 7.7 ng/L | above final limit |
| CITY OF CELINA TX0430003 | PFPeA: 9.1 ng/L | detected |
| CITY OF FARMERSVILLE TX0430004 | PFBA: 6.7 ng/L | detected |
| CITY OF FRISCO TX0430005 | PFBA: 13.8 ng/L PFPeA: 7.6 ng/L PFHxA: 6.7 ng/L | detected |
| CITY OF PLANO TX0430007 | PFBA: 7.3 ng/L PFHxA: 4.4 ng/L PFPeA: 4.3 ng/L | detected |
| CITY OF PRINCETON TX0430008 | PFBA: 5.2 ng/L | detected |
| CITY OF WYLIE TX0430011 | PFPeA: 8.9 ng/L PFBA: 8.6 ng/L PFHxA: 8 ng/L | detected |
| CITY OF ALLEN TX0430025 | PFBA: 9.3 ng/L PFPeA: 8.1 ng/L PFHxA: 7.4 ng/L | detected |
| CITY OF ANNA TX0430027 | PFBA: 5.5 ng/L | detected |
| COPEVILLE SUD TX0430029 | PFPeA: 8.1 ng/L PFBA: 7.6 ng/L PFHxA: 7 ng/L | detected |
| CULLEOKA WSC TX0430030 | PFBA: 6.2 ng/L PFPeA: 3.1 ng/L | detected |
| EAST FORK SUD TX0430033 | PFBA: 6.6 ng/L PFPeA: 6.5 ng/L PFHxA: 6.2 ng/L | detected |
| TOWN OF FAIRVIEW TX0430034 | 6:2 FTS: 12.6 ng/L PFBA: 7.9 ng/L | detected |
| CITY OF JOSEPHINE TX0430036 | PFBA: 12.8 ng/L PFPeA: 6.1 ng/L PFHxA: 5.6 ng/L | detected |
| BEAR CREEK SUD TX0430037 | 6:2 FTS: 18 ng/L PFBA: 10.3 ng/L PFPeA: 8.1 ng/L | detected |
| CITY OF MCKINNEY TX0430039 | PFBA: 8.7 ng/L | detected |
| CITY OF MELISSA TX0430040 | PFBA: 8 ng/L | detected |
| CITY OF MURPHY TX0430042 | PFBA: 7.8 ng/L PFPeA: 5.9 ng/L PFHxA: 5.6 ng/L | detected |
| CITY OF PARKER TX0430045 | PFBA: 10.1 ng/L PFPeA: 6.4 ng/L PFHxA: 5.8 ng/L | detected |
| WYLIE NORTHEAST SUD TX0430051 | PFBA: 26 ng/L PFBS: 8.5 ng/L PFPeA: 5.1 ng/L | detected |
| NEVADA SUD TX0430053 | PFBA: 7.7 ng/L PFPeA: 4.3 ng/L PFHxA: 3.9 ng/L | detected |
| CITY OF LUCAS TX0430054 | PFBA: 11.2 ng/L PFPeA: 6.2 ng/L PFHxA: 5.6 ng/L | detected |
| NORTH COLLIN SUD TX0430055 | PFBA: 11.9 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
30 facilities in Collin filed TRI reports for 2024, totalling 321k lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| TEXAS INSTRUMENTS INC | RICHARDSON | Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 240k lb |
| ENCORE WIRE CORP | MC KINNEY | Copper, Antimony compounds | 65k lb |
| CARLISLE COATINGS & WATERPROOFING INC | WYLIE | Ethylene glycol, Methanol | 6k lb |
| REACTION TECHNOLOGY EPI LLC | ALLEN | Ammonia, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4k lb |
| TOWER EXTRUSIONS LLC | WYLIE | Diisocyanates, Certain glycol ethers | 3k lb |
| QORVO TEXAS LLC | RICHARDSON | N-Methyl-2-pyrrolidone, Methanol | 2k lb |
| QUADRANT PERFORMANCE MATERIAL | MCKINNEY | Nonylphenol Ethoxylates | 657 lb |
| RAYTHEON CO | MCKINNEY | Lead | 200 lb |
| MANNER POLYMERS INC | MCKINNEY | Antimony compounds, Zinc compounds | 150 lb |
| SAF-HOLLAND INC | WYLIE | Manganese, Lead | 95 lb |
| WATSON & CHALIN MANUFACTURING INC | MC KINNEY | Manganese | 15 lb |
| CHEMTRADE SULFATE SOLUTIONS INC | CELINA | Ammonia | 13 lb |
| QUIKRETE - MCKINNEY TX PLANT | MCKINNEY | Lead | 1 lb |
| SRM 449 CELINA | CELINA | Lead | 0 lb |
| 416/417 FRISCO | FRISCO | Lead | 0 lb |
| INTERNATIONAL RESISTIVE INC. | PLANO | - | 0 lb |
| HOLCIM-SOR INC. - WYLIE RM | LAVON | - | 0 lb |
| MELISSA PLANT | MELISSA | Lead | 0 lb |
| HOLCIM-SOR INC. - PROSPER RM | PROSPER | - | 0 lb |
| HOLCIM-SOR INC.- PLANO RM | PLANO | - | 0 lb |
| TXI-MCKINNEY READY MIX | MCKINNEY | Lead compounds | 0 lb |
| REDI-MIX - FRISCO | FRISCO | Lead | 0 lb |
| HOLCIM-SOR INC. - MELISSA RM | MELISSA | - | 0 lb |
| 421/422 PROSPER | PROSPER | Lead | 0 lb |
| CMC STEEL FABRICATORS (DBA CMC REBAR) | MELISSA | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 770 tank facilities in Collin: 832 tanks in service and 1,175 closed. 324 fuel releases are on record, of which 8 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Collin 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 Collin, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CHEMICAL RECYCLING INCWYLIE
- IPMRROYCE CITY
- KCS FARMERSVILLE DERAILMENTFARMERSVILLE
- LAKE LAVON-NORTH GULLY-SITE 1LEWISVILLE
- LAKE LAVON-ST PAUL SITE 2WYLIE
- MAXWELL CREEK DRUMSMURPHY
- MCKINNEY MERCURYMCKINNEY
- MCKINNEY METALSMC KINNEY
- NORTH TEXAS MUNICIPAL WATER DISTRICT - WYLIE WATER TREATMENT PLANTWYLIE
- PLANO MERCURYPLANO