| WPWalbert Plastics Incorporated | Lowell | MA | — | ◇ UNVERIFIED |
| WIWallside INC | Taylor | MI | — | ◇ UNVERIFIED |
| WOWal-mart Optical Labs 9271 | Dallas | TX | — | ◇ UNVERIFIED |
| WJWalter & Janet Pittman | Oxnard | CA | — | ◇ UNVERIFIED |
| WCWarren Concrete | Corsicana | TX | — | ◇ UNVERIFIED |
| WUWashington United Terminals | Tacoma | WA | — | ◇ UNVERIFIED |
| WPWaste Path Sanitary Landfill LLC | Calvert City | KY | — | ◇ UNVERIFIED |
| WCWaterbury Cos INC | Independence | LA | — | ◇ UNVERIFIED |
| WMWater Management Solutions (manassas Branch) | Manassas | VA | — | ◇ UNVERIFIED |
| WPWatertown Plastics, INC | Watertown | CT | — | ◇ UNVERIFIED |
| WMWatson Marlow Fluid Technology Solutions | Devens | MA | — | ◇ UNVERIFIED |
| WSWB Spraying, LLC | Wilburton | OK | — | ◇ UNVERIFIED |
| WLWci LLC | North Salt Lake | UT | — | ◇ UNVERIFIED |
| WWWeathergard Window CO INC | Oak Park | MI | — | ◇ UNVERIFIED |
| WWWebby Washer, LLC | Cave Springs | AR | — | ◇ UNVERIFIED |
| WNWeidplas North America, LLC | Auburn | AL | — | ◇ UNVERIFIED |
| WLWeistado LLC | Denver | CO | — | ◇ UNVERIFIED |
| WIWek Industries | Jefferson | OH | — | ◇ UNVERIFIED |
| WSWellman Seeds INC | Delphos | OH | — | ◇ UNVERIFIED |
| WIWellmark International | Dallas | TX | — | ◇ UNVERIFIED |
| WPWepco Plastics INC | Middlefield | CT | — | ◇ UNVERIFIED |
| WCWesmar Company Site | Seattle | WA | — | ◇ UNVERIFIED |
| WBWestech Building Products | Mount Vernon | IN | — | ◇ UNVERIFIED |
| WAWestern Architectural Services LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| WFWestern Farm Service INC Basin City | Basin City | WA | — | ◇ UNVERIFIED |
| WFWestern Farm Service, Wellton | Wellton | AZ | — | ◇ UNVERIFIED |
| WNWestern Nutrients CORP. | Bakersfield | CA | — | ◇ UNVERIFIED |
| WPWestern Polyform CORP | Riverside | CA | — | ◇ UNVERIFIED |
| WPWestfield Plastics and Molding, LLC | Westfield | MA | — | ◇ UNVERIFIED |
| WPWestlake Plastics Co/mayfield | Mayfield | PA | — | ◇ UNVERIFIED |
| WRWestlake Royal Bldg Products Kutztown Fac | Kutztown | PA | — | ◇ UNVERIFIED |
| WRWestlake Royal Building Products Kleer | Westfield | MA | — | ◇ UNVERIFIED |
| WRWestlake Royal Windows - Baldwin Division Shipping Bld | Cornelia | GA | — | ◇ UNVERIFIED |
| WRWestlake Royal Windows (dba Krestmark Industries) | Dallas | TX | — | ◇ UNVERIFIED |
| WVWestlake Vinyls CO LP | Geismar | LA | — | ◇ UNVERIFIED |
| WMWest Memphis, Arkansas Drexel Chemical | West Memphis | AR | — | ◇ UNVERIFIED |
| WMWest Michigan Molding, INC. | Grand Haven | MI | — | ◇ UNVERIFIED |
| WTWest Tech. Structures LLC | West Valley City | UT | — | ◇ UNVERIFIED |
| WVWest Valley Sanitation District of Santa Clara County | Campbell | CA | — | ◇ UNVERIFIED |
| WVWest Virginia Methanol, Inc, Pleasants County | Saint Marys | WV | — | ◇ UNVERIFIED |
| WCWeylchem CORP | Augusta | GA | — | ◇ UNVERIFIED |
| WSWhale Scientific INC | Commerce City | CO | — | ◇ UNVERIFIED |
| WIWheeling Investments, Inc. | Payson | AZ | — | ◇ UNVERIFIED |
| WDWhirley Drink Works | Warren | PA | — | ◇ UNVERIFIED |
| WIWhirley Ind Inc/harmar St | Warren | PA | — | ◇ UNVERIFIED |
| WIWhitefield Industrial Coating | Green Bay | WI | — | ◇ UNVERIFIED |
| WGWhite Graphic Systems | Grand Prairie | TX | — | ◇ UNVERIFIED |
| WOWhite Oak Partners | Portland | ME | — | ◇ UNVERIFIED |
| WSWhite Sands Pool Plastering, INC | Altamonte Springs | FL | — | ◇ UNVERIFIED |
| WWWhitewater Whirlpool Baths & Systems- Cultured Marble & Fiberglass Casting | Lindon | UT | — | ◇ UNVERIFIED |