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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| L & H Septic | Vicksburg, MS | — | Pumper | — |
| L & H Septic Service | Vicksburg, MS | — | Installer | — |
| L & L Enterprises | Union, MS | — | Installer | — |
| L & S Septic Tank & Plumbing | Ecru, MS | — | Pumper | — |
| L & W Services, Llc | Foxworth, MS | — | Installer | — |
| L N J Vacuum Services | Gulfport, MS | — | Pumper | — |
| Lacey'S Digging Service, Inc. | Flowood, MS | — | Installer | — |
| Lacey'S Digging Services, Inc | Flowood, MS | — | Installer | — |
| Ladner Septic Service | Poplarville, MS | — | Installer | — |
| Lak Enterprises Llc Dba Quick Rooter Plumbing Serv | Lucedale, MS | — | Installer | — |
| Lamar Skinner , Co | Burnsville, MS | — | Installer | — |
| Landis Plumbing, Llc | Lucedale, MS | — | Installer | — |
| Landrum Farms, Llc | Columbus, MS | — | Installer | — |
| Landscape Solution | Hernando, MS | — | Installer | — |
| Landscape Solutions | Coldwater, MS | — | Installer | — |
| Larry Carpenter Well Company | Mt Pleasant, MS | — | Installer | — |
| Larry Edwards, Inc. | Dekalb, MS | — | Installer | — |
| Lawn Kings Landscaping, Llc | Aberdeen, MS | — | Installer | — |
| Lawrence Properties | Batesville, MS | — | Installer | — |
| Lee Plumbing Inc. | Leland, MS | — | Installer | — |
| Lee'S Backhoe & Construction | Aberdeen, MS | — | Pumper | — |
| Lee'S Backhoe & Construction, Inc | Aberdeen, MS | — | Installer | — |
| Lee'S Precast | Amory, MS | — | Installer | — |
| Lee'S Precast Concrete Inc. | Prairie, MS | — | Installer | — |
| Lee'S Precast Inc. | Aberdeen, MS | — | Installer | — |
| Leist Plumbing | Edwards, MS | — | Installer | — |
| Lester Twiner Plumbing | Yazoo City, MS | — | Installer | — |
| Letson, Cody | Baldwyn, MS | — | Installer | — |
| Letson, Randy | Baldwyn, MS | — | Installer | — |
| Liberty Waste | Starkville, MS | — | Pumper | — |
| Liquid Enviromental Solutions | Mobile, AL | — | Pumper | — |
| Liquid Environmental Solutions | Mobile, AL | — | Pumper | — |
| Lonnie Cook Backhoe & Septic Service | Potts Camp, MS | — | Installer | — |
| Lovelace, Jeffery | Iuka, MS | — | Installer | — |
| Luttrell Custom Services Llc | Randolph, MS | — | Installer | — |
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