| Company | Location | Certifications | License # |
|---|---|---|---|
| 1st Choice Septic Pumping | Camdenton, MO | Installer (Level Advanced) | 38209 |
| Abbco Plumbing & Drain Llc | St. Charles, MO | Installer (Level Basic) | 39024 |
| Abc Sewerman Installation And Maintenance | Gravois Mills, MO | Installer (Level Advanced) | 30091 |
| Abc Woodworking Llc | Mack'S Creek, MO | Installer (Level Advanced) | 39372 |
| Action Xcavating | Lincoln, MO | Installer (Level Advanced) | 37727 |
| Active Lawns Of Mid Missouri, Inc. | Sedali, MO | Installer (Level Basic) | 38670 |
| All-N-One Construction | Osceola, MO | Installer (Level Basic) | 39292 |
| Apollo Septic & Excavating And Tim Schmidt Plumbing | Sunrise Beach, MO | Installer (Level Advanced) | 39552 |
| Aulgur Enterprises | Clinton, MO | Installer (Level Basic) | 39268 |
| Austin Septic Llc | Knob Noster, MO | Installer (Level Advanced) | 39063 |
| B & B Construction/B & B Portables Llc | Leeton, MO | Installer (Level Advanced) | 33184 |
| B&B Construction | Leeton, MO | Installer (Level Advanced) | 36702 |
| Bee'S Honey Wagon Septic Tank Pumping Llc | Osceola, MO | Installer (Level Basic) | 36777 |
| Bigfoot Services, Llc | Lincoln, MO | Installer (Level Basic) | 38575 |
| Bojori Llc | Camdenton, MO | Installer (Level Advanced) | 32525 |
| Breshears Pump & Excavating Co. | Pittsburg, MO | Installer (Level Basic) | 30372 |
| Brewster Water And Septic | Lincoln, MO | Installer (Level Advanced) | 39411 |
| Brian Carl Sc Site Development | Cole Camp, MO | Installer (Level Basic) | 38812 |
| Brown'S Ors | Stover, MO | Installer (Level Advanced) | 37199 |
| Burns Mechanical Llc | Climax Springs, MO | Installer (Level Advanced) | 38920 |
| Bwoodsllc | Edwards, MO | Installer (Level Advanced) | 35022 |
| C&S Backhoe | Wheatland, MO | Installer (Level Advanced) | 33474 |
| Cameron Mangum | — | Installer (Level Advanced) | 39497 |
| Central Mo All Service Plumbing & Excavating | Osage Beach, MO | Installer (Level Advanced) | 39357 |
| D&R Bobcat | Osceola, MO | Installer (Level Basic) | 37122 |
| Danner Mobile Home Service | Stover, MO | Installer (Level Advanced) | 36185 |
| Danny Roellig Backhoe Service | Warsaw, MO | Installer (Level Advanced) | 38917 |
| Davis Septic | Climax Springs, MO | Installer (Level Advanced) | 33463 |
| Dittmer Ditching | Calhoun., MO | Installer (Level Basic) | 38189 |
| Dittmer Ditching Llc | Calhoun, MO | Installer (Level Advanced) | 31557 |
| Dittmer Ditching, Llc | Calhoun, MO | Installer (Level Advanced) | 31555 |
| Do It All Dirt Worx | Climax Springs, MO | Installer (Level Advanced) | 39026 |
| Down 2 Earth Excavation Construction Llc | Sedalia, MO | Installer (Level Advanced) | 38017 |
| Doyel Excavation | Rolla, MO | Installer (Level Advanced) | 35897 |
| Dream Home Construction | Camdenton, MO | Installer (Level Advanced) | 39543 |
| Elite Plumbing | Chilhowee, MO | Installer (Level Advanced) | 33169 |
| Four Seasons Plumbing | Osage Beach, MO | Installer (Level Advanced) | 35884 |
| Fox Earthworx Llc | Versailles, MO | Installer (Level Basic) | 39326 |
| Frank & Ernest, Inc. | Cole Camp, MO | Installer (Level Basic) | 33896 |
| Gramke Home Inspections Llc | Versailles, MO | Installer (Level Basic) | 35947 |
| Green Acres Home Inspections | Eldon, MO | Installer (Level Basic) | 38096 |
| Green Shore Excavating | Barnett, MO | Installer (Level Advanced) | 33517 |
| Grigsby Construction | Clinton, MO | Installer (Level Advanced) | 31604 |
| Hayes Excavating & Construction, Llc | Windsor, MO | Installer (Level Basic) | 35699 |
| Honest Abe’S | Eldon, MO | Installer (Level Advanced) | 38594 |
| Honest Abe’S Home Services | Osage Beach, MO | Installer (Level Advanced) | 39439 |
| Honest Abes | Osage Beach, MO | Installer (Level Advanced) | 39408 |
| Hoover'S Septic & Plumbing | Versailles, MO | Installer (Level Advanced) | 31520 |
| J &E Septic | Jamestown, MO | Installer (Level Advanced) | 39020 |
| Jack D. Hall | Lamonte, MO | Installer (Level Advanced) | 37246 |
| John Smith | — | Installer (Level Advanced) | 39470 |
| Joseph Duncan | Stover, MO | Installer (Level Advanced) | 38518 |
| Kcs, Llc | Grandview, MO | Installer (Level Advanced) | 36868 |
| Kkr Land Management Llc | Macks Creek, MO | Installer (Level Advanced) | 38313 |
| Koncen Construction | Camdenton, MO | Installer (Level Basic) | 39143 |
| Kumberg Excavation And Landscaping Llc | Versailles, MO | Installer (Level Basic) | 38876 |
| Lake West Excavating | Linn Creek, MO | Installer (Level Advanced) | 38279 |
| Lakewide Hauling And Excavation | Sunrise Beach, MO | Installer (Level Advanced) | 31891 |
| Larry D Knox | — | Installer (Level Basic) | 39113 |
| Leeker Construction Co | St. Louis, MO | Installer (Level Advanced) | 35957 |
| Long Excavation | Bolivar, MO | Installer (Level Advanced) | 37813 |
| Masterpiece Septics | Sedalia, MO | Installer (Level Advanced) | 36388 |
| Mcghee Structures Llc | Clinton, MO | Installer (Level Advanced) | 37279 |
| Mcginnis H-S Septic Service | Versailles, MO | Installer (Level Advanced) | 30154 |
| Mcginnis H-S Septic Service | Versailles, MO | Installer (Level Advanced) | 32206 |
| Mid-Mo Dirtworx And Land Management Llc | Versailles, MO | Installer (Level Advanced) | 38574 |
| Mills Lawn Care | Buffalo, MO | Installer (Level Advanced) | 39385 |
| Owens Septic Service | Knob Noster, MO | Installer (Level Advanced) | 37421 |
| Pillar Premier Inspections | Macks Creek, MO | Installer (Level Advanced) | 39565 |
| Polodna Excavating And Fencing | Hermitage, MO | Installer (Level Basic) | 39118 |
| Pro-Com Septic & Excavation Llc | Valles Mines, MO | Installer (Level Basic) | 39390 |
| Quality Backhoe | Sunrise Beach, MO | Installer (Level Advanced) | 31891 |
| Quality Plumbing | Cole Camp, MO | Installer (Level Advanced) | 38068 |
| Quality Plumbing Inc | Blairstown, MO | Installer (Level Basic) | 38971 |
| R & R Construction | Calhoun, MO | Installer (Level Advanced) | 30176 |
| Rickey'S Septic | Camdenton, MO | Installer (Level Advanced) | 37942 |
| Rickey'S Septic Llc | Climax Springs, MO | Installer (Level Advanced) | 37941 |
| Rickeys Septic Llc | Camdenton, MO | Installer (Level Advanced) | 33469 |
| Rk Services | Linn Creek, MO | Installer (Level Advanced) | 33459 |
| Rodgers Earthworks | Clinton, MO | Installer (Level Basic) | 38969 |
| Roellig Backhoe Service | Warsaw, MO | Installer (Level Advanced) | 33173 |
| S & S Backhoe Service | Stover, MO | Installer (Level Advanced) | 36740 |
| Sanitary Septic Services | Barnett, MO | Installer (Level Advanced) | 33518 |
| Sc Precision Construction Inc | Sedalia, MO | Installer (Level Advanced) | 38922 |
| Sedalia Septic & Drain | Green Ridge, MO | Installer (Level Advanced) | 37546 |
| Sedalia Septic & Drain | Green Ridge, MO | Installer (Level Advanced) | 39401 |
| Sedalia Septic And Drain Llc | Green Ridge, MO | Installer (Level Basic) | 38379 |
| Sedalia Septic And Drain Llc | Green Ridge, MO | Installer (Level Advanced) | 30172 |
| Sensenig Excavating & Contracting Llc | Mora, MO | Installer (Level Basic) | 38950 |
| Simpson Excavation Llc | Higginsville, MO | Installer (Level Basic) | 38952 |
| Skyline Electric | Latham, MO | Installer (Level Basic) | 38848 |
| Sleepy Bill'S Marina | Stover, MO | Installer (Level Advanced) | 36893 |
| Snider Construction Llc | Lebanon, MO | Installer (Level Advanced) | 37774 |
| Sole-Proprietor | Edwards, MO | Installer (Level Basic) | 39325 |
| Stokes Home Improvement | Warsaw, MO | Installer (Level Basic) | 39293 |
| Tallmage Hardscape & Excavation Llc. | Gravois Mills, MO | Installer (Level Advanced) | 38577 |
| Valley Mobile Homes Llc | Versailles, MO | Installer (Level Basic) | 39340 |
| Victor J. Schlup | Warsaw, MO | Installer (Level Basic) | 39119 |
| Voxel Llc | Gravois Mills, MO | Installer (Level Basic) | 38571 |
| Wallace Backhoe | Warsaw, MO | Installer (Level Advanced) | 33212 |
| Waste Water Operation & Service, Llc | Versailles, MO | Installer (Level Advanced) | 35529 |
| Windsor Plumbing | Windsor, MO | Installer (Level Basic) | 37422 |
| Yount Concrete | Camdenton, MO | Installer (Level Basic) | 38903 |
103 companies in the Missouri DHSS registered OWTS installer list are based in Benton County as of 2026-07-23. Companies based elsewhere in Missouri also commonly serve the county.
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