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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| Walt Kucharski Septic Service Inc | Richfield, OH | — | Septage Hauler | 67253562 |
| Wandling EnterpiSouthern Ohio Sanitation Services | Albany, OH | — | Septage Hauler | B150036643 |
| Warner's Liquid Waste Hauling LLC | Plain City, OH | — | Septage Hauler | 2426056 |
| Warren AAA Wastewater Services, Inc. dba Triple A Pro Services | Franklin, OH | — | Septage Hauler | OH13459 |
| WAS Portables LLC | Heath, OH | — | Septage Hauler | 7900475249 |
| Washington Haas Septic & Portable Toilet Service Inc | Lower Salem, OH | — | Septage Hauler | BND3404571 |
| Water Logged Septics | Xenia, OH | — | Septage Hauler | BX0060192 |
| Watson Construction | Hicksville, OH | — | Septage Hauler | Q968192536 |
| Wayne Brenners Sanitary Service | Apple Creek, OH | — | Septage Hauler | 2513868 |
| Wells Septic and Drain, LLC | Sunbury, OH | — | Septage Hauler | 62240291 |
| Werab Enterprises LLC | Atwater, OH | — | Septage Hauler | 62237988 |
| Wetherell Enterprises LLC | Mingo Junction, OH | — | Septage Hauler | Q968143294 |
| Wethington Lake LLC | Goshen, OH | — | Septage Hauler | 2665484 |
| Whipkey Septic Pumping LLC | Homeworth, OH | — | Septage Hauler | 95B4Y4499 |
| Wildcat Porta- Potti, LLC | Blanchester, OH | — | Septage Hauler | 7901133528 |
| William Albert Inc. | Coshocton, OH | — | Septage Hauler | BND3516530 |
| Williams Layman Septic Tank & Drain Cleaning LLC | Alvordton, OH | — | Septage Hauler | 71604964 |
| Willowbend Nurseries LLC | Perry, OH | — | Septage Hauler | 101442595 |
| Wilson Plumbing & Heating, LLC | Stow, OH | — | Septage Hauler | CBE1036708 |
| Wilson Septic | Perry, OH | — | Septage Hauler | BND127190D |
| Winelco | West Chester, OH | — | Septage Hauler | B057416 |
| Wireman Excavating LLC | Wapakoneta, OH | — | Septage Hauler | Q968197288 |
| Wolcott Septic Cleaning Inc | Chardon, OH | — | Septage Hauler | Q968141131 |
| Wolf Pack Rentals, LLC | Altair, TX | — | Septage Hauler | 41161853 |
| Wood C & L Sanitation Inc | Perrysburg, OH | — | Septage Hauler | 4463241 |
| Workman Sanitary Service | Newton Falls, OH | — | Septage Hauler | 2674971 |
| Wyandot JB Walter Construction, LLC | Wharton, OH | — | Septage Hauler | B0578174 |
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