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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| W Brown | Hope, AR | — | Installer | — |
| Wade Haynie | Beebe, AR | — | Installer | — |
| Wake Zone- Boat | Royal, AR | — | Pumper | — |
| Walter Lanehart | Lonoke, AR | — | Installer | — |
| Walter Williams | Mena, AR | — | Installer | — |
| Warren Roden | El Dorado, AR | — | Installer | — |
| Weldon Garrison | Texarkana, AR | — | Installer | — |
| Weldon Rye | Cove, AR | — | Installer | — |
| Wesley Carter | Augusta, AR | — | Installer | — |
| Wesley Gryner | Van Buren, AR | — | Installer | — |
| Wesley Harrison | Rose Bud, AR | — | Installer | — |
| Wesley Lemonier | Alma, AR | — | Installer | — |
| Wesley Thurgood | Sheridan, AR | — | Installer | — |
| Wesley Wright | Searcy, AR | — | Installer | — |
| West Rock Landing-Boat | Roland, AR | — | Pumper | — |
| Westark Plumbing | Fort Smith, AR | — | Pumper | — |
| Weston Curtner | Jonesboro, AR | — | Installer | — |
| Weston Harris | Harrison, AR | — | Installer | — |
| White Knight Septic Service Llc | Noel, MO | — | Pumper | — |
| White River Environmental Services, Llc | Springdale, AR | — | Pumper | — |
| Wil Jarnagan | Fayetteville, AR | — | Installer | — |
| Wilder Blockburger | Pea Rodge, AR | — | Installer | — |
| Wilder Mitchell | Mountain View, AR | — | Installer | — |
| Will Jones | Huntsville, AR | — | Installer | — |
| William Baskin | Rogers, AR | — | Installer | — |
| William Brady | Vilonia, AR | — | Installer | — |
| William Brooks | Benton, AR | — | Installer | — |
| William Caleb Shaver | Salem, AR | — | Installer | — |
| William Calhoun | Griffithville, AR | — | Installer | — |
| William Fountain | Osceola, AR | — | Installer | — |
| William Grozis | Peel, AR | — | Installer | — |
| William Gryner | Van Buren, AR | — | Installer | — |
| William Hollingsworth | Fayetteville, AR | — | Installer | — |
| William Holsted | Star City, AR | — | Installer | — |
| William Russell | Benton, AR | — | Installer | — |
| William Smith | Hot Springs, AR | — | Installer | — |
| William Townsend | Benton, AR | — | Installer | — |
| Willie Lamkin | Chidester, AR | — | Installer | — |
| Wyatt Graff | La Russell, MO | — | Installer | — |
| Wyatt Wilson | Romance, AR | — | Installer | — |
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