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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| A & A Septic Tank Service | Laurel, MS | — | Installer | — |
| A & C Pumping Service, Inc. | Laurel, MS | — | Pumper | — |
| A & M Septic Solutions | Baldwin, MS | — | Installer | — |
| A & W Septic Tank Service | Iuka, MS | — | Pumper | — |
| A & W Septic Tank Services | Iuka, MS | — | Installer | — |
| A And A Septic Services Llc | Laurel, MS | — | Pumper | — |
| A Mrs & Me Service Corp Dba Rooter-Man | Memphis, TN | — | InstallerPumper | — |
| A Services Llc | Coldwater, MS | — | Installer | — |
| A-1 Septic Tank & Drain Service | Coldwater, MS | — | InstallerPumper | — |
| A. Ross Construction | Vicksburg, MS | — | Installer | — |
| A&W Septic Tank Service | Iuka, MS | — | Pumper | — |
| A1 Sanitation Services, Llc | Bogue Chitto, MS | — | Pumper | — |
| A1 Septic Pumping Service | Hattiesburg, MS | — | Pumper | — |
| A1 Septic Service | Booneville, MS | — | InstallerPumper | — |
| Aaa Pumping Service | Bartlett, TN | — | Pumper | — |
| Aaa Septic Systems, Llc | Brandon, MS | — | InstallerPumper | — |
| Abc Plumbing & Septic Service Llc | Byhalia, MS | — | Pumper | — |
| Abc Septic Service | Byhalia, MS | — | Installer | — |
| Acme Oil Recycling Llc | Poplarville, MS | — | Pumper | — |
| Adams Construction | Biloxi, MS | — | Installer | — |
| Adcox Digging Service | Mendenhall, MS | — | Installer | — |
| Addy Brothers Construction | Hickory, MS | — | Installer | — |
| Advanced Landscaping | Starkville, MS | — | Installer | — |
| Advanced Plumbing | Columbia, MS | — | InstallerPumper | — |
| Ahs Construction Co. | New Albany, MS | — | Installer | — |
| Akins Commercial Services | Tiplersville, MS | — | Pumper | — |
| Akins Construction | Tiplersville, MS | — | Installer | — |
| Alan Foster Inc | Lyon, MS | — | Installer | — |
| Alex Smith Backhoe Service | Greenville, MS | — | Installer | — |
| Alex Wamsley Hauling & Backhoe | Corinth, MS | — | Installer | — |
| Alison Septic, Llc | Picayune, MS | — | Installer | — |
| All Around Vacuum Truck & Septic Tank Cleaning | Metairie, LA | — | Pumper | — |
| All In One Services | Horn Lake, MS | — | Pumper | — |
| All South Pumping | Moss Point, MS | — | Pumper | — |
| All-South Portable Sanitation Service | Vancleave, MS | — | Pumper | — |
| All-State Tank Co, Inc | Leland, MS | — | Installer | — |
| All-State Tank Company | Leland, MS | — | Pumper | — |
| Allen Waterworks Services Llc | Oxford, MS | — | Installer | — |
| Am / Pm Pumping Service | Moscow, TN | — | Pumper | — |
| Amacker Septic Llc | Poplarville, MS | — | Installer | — |
| American Air Specialists Inc | Hattiesburg, MS | — | Installer | — |
| American Johnny | Saltillo, MS | — | Pumper | — |
| American Septic Solutions | Hernando, MS | — | Pumper | — |
| Amor Em Llc | Liberty, MS | — | Installer | — |
| Anderson Construction Co. | Stringer, MS | — | Installer | — |
| Anytime Portables | D'Iberville, MS | — | Pumper | — |
| Apex Service Group | Citronelle, AL | — | Installer | — |
| Arceneaux'S Dirt Work | Magnolia, MS | — | Installer | — |
| Arctic | Cordova, TN | — | Installer | — |
| Armstrong Cleaning Service | Poplarville, MS | — | Installer | — |
| Arrows Llc/A1 Septic Pumping | Mooreville, MS | — | Pumper | — |
| Arrows, Llc | Mooreville, MS | — | Installer | — |
| Arthur'S Dozer & Construction Services | Collins, MS | — | Installer | — |
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