| PEPe Ell Hulk Hauling | Aberdeen | — | ◇ UNVERIFIED |
| PCPq Corporation | Tacoma | — | ◇ UNVERIFIED |
| QCQuality Controlled Manufacturing Site | Kent | — | ◇ UNVERIFIED |
| QCQuantum Clean | Washougal | — | ◇ UNVERIFIED |
| RTRiverside Topsoil | Snohomish | — | ◇ UNVERIFIED |
| RMRsa Microtech Westar Lane | Burlington | — | ◇ UNVERIFIED |
| RPRudd Paint and Varnish Site | Seattle | — | ◇ UNVERIFIED |
| SCSeattle Childrens Hospital Research Inst | Seattle | — | ◇ UNVERIFIED |
| SGSeattle Genetics INC | Bothell | — | ◇ UNVERIFIED |
| SSSimplot Soilbuilders Prosser | Prosser | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC Wallula | Wallula | — | ◇ UNVERIFIED |
| SSpringstar | Woodinville | — | ◇ UNVERIFIED |
| SSSummit Supply | Seattle | — | ◇ UNVERIFIED |
| SFSunrise Fiberglass Engineering Site | Shelton | — | ◇ UNVERIFIED |
| TCTalisman Construction Services | Spokane | — | ◇ UNVERIFIED |
| TCTecnal Corporation Site | Anacortes | — | ◇ UNVERIFIED |
| TETex Enterprises INC | Auburn | — | ◇ UNVERIFIED |
| TATrident Agricultural Products INC Buena | Buena | — | ◇ UNVERIFIED |
| UCUnion Carbide Linde Div | Spokane | — | ◇ UNVERIFIED |
| UCUnited Coatings Manufacturing CO | Greenacres | — | ◇ UNVERIFIED |
| VUVesuvius USA Site | Chehalis | — | ◇ UNVERIFIED |
| VMViox Mcdowell Site | Seattle | — | ◇ UNVERIFIED |
| WUWashington United Terminals | Tacoma | — | ◇ UNVERIFIED |
| WWWellons Water Technology | Vancouver | — | ◇ UNVERIFIED |
| WCWesmar Company INC | Seattle | — | ◇ UNVERIFIED |
| WAWestech Aerosol Corporation | Port Orchard | — | ◇ UNVERIFIED |
| WCWestern Chemical | Ferndale | — | ◇ UNVERIFIED |
| WEWilbur Ellis CO Pomeroy | Pomeroy | — | ◇ UNVERIFIED |
| WEWilbur Ellis CO Pullman | Pullman | — | ◇ UNVERIFIED |
| WCWood Care Systems | Kirkland | — | ◇ UNVERIFIED |
| YOYe Olde Paint Box | Longview | — | ◇ UNVERIFIED |
| ZZymogenetics | Seattle | — | ▲ REPORTED CLOSED |
| ANAdvanced Nutrients | Woodland | 20–99 | ◐ LIKELY ACTIVE |
| BTBarr Tech LLC | Spokane Valley | 20–99 | ◐ LIKELY ACTIVE |
 Bristol Myers Squibb Cell Therapy Operations | Bothell | 500+ | ◐ LIKELY ACTIVE |
| CICAF, Inc. | Maple Valley | 20–99 | ◐ LIKELY ACTIVE |
| CSChemtrade Solutions LLC Anacortes | Anacortes | 20–99 | ◐ LIKELY ACTIVE |
| EFEphrata Fill Plant | Ephrata | 1–19 | ◐ LIKELY ACTIVE |
| GSGD-OTS Seattle, Moses Lake Production Center | Moses Lake | 20–99 | ◐ LIKELY ACTIVE |
 InBios International Inc. 307 Facility | Seattle | 20–99 | ◐ LIKELY ACTIVE |
| ICIowa Cannabis Company Manufacturing | Iowa City | 1–19 | ◐ LIKELY ACTIVE |
| LGLiving Glass Houses | Bellingham | 1–19 | ◐ LIKELY ACTIVE |
| MIMetagenics Inc. - WA Production | Gig Harbor | 100–499 | ◐ LIKELY ACTIVE |
| MOMill Operations Tacoma CBM | Tacoma | 20–99 | ◐ LIKELY ACTIVE |
| MLMoses Lake ASU | Moses Lake | 1–19 | ◐ LIKELY ACTIVE |
| MRMultiCare Retail Pharmacy | Tacoma | 100–499 | ◐ LIKELY ACTIVE |
| NVNapa Valley Mining Company | Everett | — | ▲ REPORTED CLOSED |
| NFNatural Factors Manufacturing Inc. - Longacres | Monroe | 20–99 | ◐ LIKELY ACTIVE |
| NFNatural Factors Manufacturing Inc. - Wetnoses | Monroe | 1–19 | ◐ LIKELY ACTIVE |
| NSNatural Selection Farms Inc | Sunnyside | 20–99 | ◐ LIKELY ACTIVE |
