| SASifco Applied Surface Concepts | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| SFSigma Fasteners | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| SCSmith Corrosion Services Incorporated | Houston | TX | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SRSolid Rock Ready Mix Site | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSouth Coast Terminals Ptf | Houston | TX | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| SMSouthline Metal Products CO | Houston | TX | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| SSSpeed & Sport Chrome Plating | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| SCSrm Concrete Plant 402 | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SSS & S Plating CO | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| S3Stage 3 Separation | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
 Standard Machine Works INC | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| SCStarpak CORP | Houston | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SPStauffer Pipe Services | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SAStewart and Stevenson Telge Road Facility | Houston | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| SPStreamline Polymers | Houston | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SHSws Holdings Pasadena | Houston | TX | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| TGTechnipfmc Gremp Campus | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| TCTenaris Coiled Tubes - Seacat | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TPTexas Pmw INC | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TSTexas Steel Processing | Houston | TX | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| TTTexas Tile Manufacturing | Houston | TX | Plastics and Rubber Products Manufacturing326192 | — | ◇ UNVERIFIED |
| TEThe Exone | Houston | TX | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| TCTimkensteel CORP | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| THTps Houston Group | Houston | TX | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| TTranter | Houston | TX | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| TOTrelleborg Offshore US Rankin Road Facility | Houston | TX | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| TOTrelleborg Offshore US West Hardy Facility | Houston | TX | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| THTuboscope Highway 90 Coating Facility | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| TPTubular Processing Houston Operations | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TFTyson Foods Ammonia Release | Houston | TX | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| USU S Steel Oilwell Services Wheeling Machine Produc | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VTVallourec Tube Alloy | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VUVam USA Miller Rd | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VMVanguard Metal Technologies | Houston | TX | Fabricated Metal Product Manufacturing332810 | — | ◇ UNVERIFIED |
| VIVarn International, INC. | Houston | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| VWVeolia Water North America Operating Services | Houston | TX | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| VVerdia | Houston | TX | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| VMVibrantz Minerals | Houston | TX | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| VMVulcan Materials Lockwood | Houston | TX | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WEWare Electroplating CO | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| WMWaste Management - Fairbanks Landfill | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| WBWeatherford Baird Ct | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| WWWeatherford Well Screen | Houston | TX | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| WTWesthollow Technology Center | Houston | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| WLWest Little York Coating Plant | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| WBWhirlwind Bldg Systems | Houston | TX | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| WGW.r. Grace & CO. - Conn. Grace Construction Products | Houston | TX | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| ZCZachry Construction CORP Bp 519022 | Houston | SC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| 0H0181 - HSE COE Casing Equipment | Houston | TX | Machinery Manufacturing333132 | 20-99 | ◐ LIKELY ACTIVE |
| 1H118 Houston Bakery Houston BKY | Houston | TX | Food Manufacturing311812 | 100-499 | ◐ LIKELY ACTIVE |
