| SCStruktol CO. of America | Villa Rica | GA | — | ◇ UNVERIFIED |
| SKStryten Kcmo LLC | Kansas City | MO | — | ◇ UNVERIFIED |
| SWSuez Wts USA INC | Addison | IL | — | ◇ UNVERIFIED |
| SWSuez Wts USA INC Beaumont - Plant | Beaumont | TX | — | ◇ UNVERIFIED |
| SCSyntech Cedar Port | Baytown | TX | — | ◇ UNVERIFIED |
| TITaracorp Imaco | Winston Salem | NC | — | ◇ UNVERIFIED |
| TCTaylor Chemical, INC. | Taylor | PA | — | ◇ UNVERIFIED |
| TOTeam Oil Tools | Tulsa | OK | — | ◇ UNVERIFIED |
| TITechnic INC | Cranston | RI | — | ◇ UNVERIFIED |
| TATeledyne Allvac | Monroe | NC | — | ◇ UNVERIFIED |
| TUTernium USA INC - Shreveport Facility | Shreveport | LA | — | ◇ UNVERIFIED |
| TThunderline-z | Hampstead | NH | — | ◇ UNVERIFIED |
| TSTimpie Salt Processing Plant | Grantsville | UT | — | ◇ UNVERIFIED |
| TSTorrey S Crane Company | Southington (plantsville) | CT | — | ◇ UNVERIFIED |
| TMTroy Manufacturing INC | Burton | OH | — | ◇ UNVERIFIED |
| UPUltra Pure Solutions INC | Castroville | CA | — | ◇ UNVERIFIED |
| UEUmicore Electrical Materials USA INC | Attleboro | MA | — | ◇ UNVERIFIED |
| UIUnited Industries Dba Chemsico | Saint Louis | MO | — | ◇ UNVERIFIED |
| USUnivar Solutions Powder Facility | Waxahachie | TX | — | ◇ UNVERIFIED |
| USUnivar Solutions Ssc Facility | Waxahachie | TX | — | ◇ UNVERIFIED |
| USUnivar Solutions Usa, LLC. Fka Dpc Enterprises, LP | Chattanooga | TN | — | ◇ UNVERIFIED |
| UAUS Army Pine Bluff Arsenal | Pine Bluff | AR | — | ◇ UNVERIFIED |
| UWUS Water Services INC | Cambridge | MN | — | ◇ UNVERIFIED |
| UIUyemura International Corporation | Southington | CT | — | ◇ UNVERIFIED |
| VEVeolia Es Technical Solutions Llc/ Onyx Env Services CO | Henderson | CO | — | ◇ UNVERIFIED |
| VUVesuvius USA Corporation - Cd (1318126134) | Brookpark | OH | — | ◇ UNVERIFIED |
| VWVictory White Metal CO | Cleveland | OH | — | ◇ UNVERIFIED |
| VTVoltarc Technologies INC | Waterbury | CT | — | ◇ UNVERIFIED |
| VGVulcan Global Manufacturing Solutions INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| VGVulcan Global Manufacturing Solutions INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| WCW2fuel - Crawfordsville Facility | Crawfordsville | IA | — | ◇ UNVERIFIED |
| WCWah Chang Alabama | Huntsville | AL | — | ◇ UNVERIFIED |
| WCWako Chemicals USA INC | Richmond | VA | — | ◇ UNVERIFIED |
| WCWall Colmonoy CORP CORP Los Lumas Plant | Los Lunas | NM | — | ◇ UNVERIFIED |
| WCWalling Chemical Company | Sioux Falls | SD | — | ◇ UNVERIFIED |
| WTWater Treatment Specialist INC | Catano | PR | — | ◇ UNVERIFIED |
| WEWestinghouse Elec CO - Specialty Metals Plant | Blairsville | PA | — | ◇ UNVERIFIED |
| WBWoody Butts | Arlington | TX | — | ◇ UNVERIFIED |
| WRWorld Resources Company | Tolleson | AZ | — | ◇ UNVERIFIED |
| WRW R Grace & CO -conn Grace Const Prod | North Bergen | NJ | — | ◇ UNVERIFIED |
| WRW R Grace & Company Conn Grace Construction Products | Lithonia | GA | — | ◇ UNVERIFIED |
| WRW R Grace & Company Incorporated | Clearfield | UT | — | ◇ UNVERIFIED |
| 2E2950 Executive Blvd | Mesquite | TX | 20–99 | ◐ LIKELY ACTIVE |
| 55913_12970 | Tumwater | WA | 20–99 | ◐ LIKELY ACTIVE |
| 77100 | Sauget | IL | 100–499 | ◐ LIKELY ACTIVE |
| ABA. Barber Excavating, LLC | Coventry | RI | — | ◐ LIKELY ACTIVE |
| ASAbri Science, LLC | Baltimore | MD | — | ◐ LIKELY ACTIVE |
| ASAbsolute Standards INC | Middletown | CT | — | ◐ LIKELY ACTIVE |
| ASAccu-Care Supply Inc | Rumford | RI | 20–99 | ◐ LIKELY ACTIVE |
| AFACL - Flavor Center | Richmond | VA | 20–99 | ◐ LIKELY ACTIVE |