| Company | Location | Certifications | License # |
|---|---|---|---|
| 3 Nails Construction | Seligman, MO | Installer (Level Basic) | 39324 |
| A-Quality Excavating/Vaughn Terry | Joplin, MO | Installer (Level Advanced) | 33214 |
| Aaron'S Home Remodeling And Repair, Llc | Pineville, MO | Installer (Level Basic) | 37381 |
| Abe Sherwood Services | Verona, MO | Installer (Level Advanced) | 35018 |
| Ace Dirtworks & Paving Llc | Lampe, MO | Installer (Level Advanced) | 32824 |
| Advanced Excavating & Grading Llc | Forsyth, MO | Installer (Level Basic) | 38816 |
| All Excavating, Llc | Clever, MO | Installer (Level Advanced) | 39365 |
| All Water Plumbing And Septic | Colcord, MO | Installer (Level Advanced) | 39354 |
| Allen Excavating | Nixa, MO | Installer (Level Advanced) | 36222 |
| Argo Plumbing Inc | Republic, MO | Installer (Level Advanced) | 37618 |
| Argo Plumbing Inc | Republic, MO | Installer (Level Advanced) | 37617 |
| Armor Construction / Hammerhead Construction | Kimberling City, MO | Installer (Level Advanced) | 36875 |
| Asselin Enterprises, Llc | Reeds Spring, MO | Installer (Level Advanced) | 38581 |
| Austin'S Septic | — | Installer (Level Basic) | 38887 |
| Bell Enterprises | Branson, MO | Installer (Level Advanced) | 33869 |
| Bell Enterprises | Branson, MO | Installer (Level Advanced) | 39519 |
| Beshears Excavating | Everton, MO | Installer (Level Basic) | 39369 |
| Brad & Company | Golden, MO | Installer (Level Advanced) | 34980 |
| Brian Gipson Plumbing Llc | Golden, MO | Installer (Level Advanced) | 39531 |
| Bruce L Chandler | Monett, MO | Installer (Level Advanced) | 33276 |
| Bryant Concrete | Galena, MO | Installer (Level Basic) | 37224 |
| Built By Barrington Llc | Rogersville, MO | Installer (Level Basic) | 39479 |
| C & C Welding & Fab Llc | Branson, MO | Installer (Level Advanced) | 37773 |
| Caleb Hopkins | — | Installer (Level Basic) | 39537 |
| Carl Chapman | — | Installer (Level Basic) | 39522 |
| Charley Wilson | Oronogo, MO | Installer (Level Advanced) | 33692 |
| Chris Vaught Construction | Verona, MO | Installer (Level Advanced) | 33528 |
| Chris Vaught Construction Llc | Verona, MO | Installer (Level Advanced) | 35749 |
| Christina Jensen | Willard, MO | Installer (Level Basic) | 39190 |
| Clay Gulick | — | Installer (Level Basic) | 39373 |
| Clearwater Enviromental Llc | Springfield, MO | Installer (Level Advanced) | 39358 |
| Clog Boss Drains And Septic | Bonne Terre, MO | Installer (Level Basic) | 38853 |
| Collins Haulin Llc | Neosho, MO | Installer (Level Basic) | 39051 |
| Contractor Pros, Llc | Hollister, MO | Installer (Level Advanced) | 39074 |
| Corky Evans | Seligman, MO | Installer (Level Basic) | 38767 |
| Couch Excavating | Cassville, MO | Installer (Level Advanced) | 33223 |
| Craig Ray Excavating | Crane, MO | Installer (Level Advanced) | 37899 |
| Cramblett Excavating | Galena, MO | Installer (Level Advanced) | 34481 |
| Creyton Markoffski | Omaha, MO | Installer (Level Advanced) | 39541 |
| Curtis Excavating & Grading Llc | Seneca, MO | Installer (Level Basic) | 39052 |
| D Crosby Plumbing & Custom Home Renovations & Exca | Kimberling City, MO | Installer (Level Advanced) | 36455 |
| David Barrett - Dba: A Midwest Backflow Co. | Harrisonville, MO | Installer (Level Advanced) | 39396 |
| David Flanary Backhoe & Dumptruck Service | Anderson, MO | Installer (Level Advanced) | 33226 |
| David Johnson Construction | Aurora, MO | Installer (Level Basic) | 34477 |
| David Johnson Construction | Aurora, MO | Installer (Level Basic) | 39330 |
| Dcb Construction Llc | Ozark, MO | Installer (Level Advanced) | 34696 |
| Donnie Holt Excavating | Galena, MO | Installer (Level Basic) | 33127 |
| Dustin Sears | — | Installer (Level Advanced) | 39555 |
| Dutchman Bobcat Service | Shell Knob, MO | Installer (Level Advanced) | 33696 |
| Dylan Deines | — | Installer (Level Basic) | 39418 |
| Eagle Rock Construction | Eagle Rock, MO | Installer (Level Advanced) | 32863 |
| Eastwood Excavation | Shell Knob, MO | Installer (Level Basic) | 39053 |
| Edgewater Mechanical Llc | Cape Fair, MO | Installer (Level Advanced) | 37258 |
| Essary Excavation | Cape Fair, MO | Installer (Level Advanced) | 38454 |
| Ewing Contracting Llc | Neosho, MO | Installer (Level Advanced) | 38514 |
| Garren Plumbing And Excavation | Exeter, MO | Installer (Level Basic) | 38381 |
| Genuine Home Inspections | Ozark, MO | Installer (Level Basic) | 39232 |
| Good'S Landscaping | Shell Knob, MO | Installer (Level Advanced) | 32871 |
| Good'S Septic & Excavating Llc | Shell Knob, MO | Installer (Level Advanced) | 39487 |
| Greater Good Resources | Monett, MO | Installer (Level Basic) | 39444 |
| Greg Alley Construction | Seligman, MO | Installer (Level Basic) | 33750 |
| Greypoint Construction Llc | Bentonville, MO | Installer (Level Advanced) | 39044 |
| Gross Excavation | — | Installer (Level Advanced) | 33154 |
| Groundbreakers Excavation Llc | Cape Fair, MO | Installer (Level Advanced) | 38158 |
| Gurney Excavation Llc | Mount Vernon, MO | Installer (Level Basic) | 39535 |
| Haggard'S Excavating | Neosho, MO | Installer (Level Advanced) | 38012 |
| Haggard'S Excavating Llc | Neosho, MO | Installer (Level Advanced) | 33269 |
| Hall Plumbing | Goodman, MO | Installer (Level Advanced) | 38039 |
| Hamilton Excavating Services Llc | Republic, MO | Installer (Level Basic) | 39425 |
| Handscape, Llc | Clever, MO | Installer (Level Basic) | 39453 |
| Harriman Farms & Excavating Llc | Rocky Comfort, MO | Installer (Level Basic) | 39057 |
| Harriman Farms And Excavating Llc | Rocky Comfort, MO | Installer (Level Basic) | 39056 |
| Harris Excavating | Aurora, MO | Installer (Level Basic) | 32836 |
| Homefront Construction Inc./Solid Rock Excavating | Reed Springs, MO | Installer (Level Advanced) | 34581 |
| Homes By S&K | Clever, MO | Installer (Level Basic) | 39452 |
| Hurn Excavating Llc | Granby, MO | Installer (Level Basic) | 39014 |
| Hurn'S Backhoe Service | Neosho, MO | Installer (Level Advanced) | 32868 |
| J & L Underground Construction, Llc | Neosho, MO | Installer (Level Advanced) | 37918 |
| J Co Dirtwork | Cape Fair, MO | Installer (Level Advanced) | 38081 |
| J Harris Homes | Marionville, MO | Installer (Level Basic) | 39454 |
| J Willman Excavating Llc | Shell Knob, MO | Installer (Level Advanced) | 36370 |
| J&M Septic And Excavation | Anderson, MO | Installer (Level Advanced) | 39353 |
| Jackie Wassman | Washburn, MO | Installer (Level Basic) | 39297 |
| Jacob'S Backhoe Service | Pineville, MO | Installer (Level Advanced) | 33257 |
| James Mcanally | Stark City, MO | Installer (Level Advanced) | 38362 |
| Jason Bond | — | Installer (Level Basic) | 39566 |
| Jennifer D. Mackey | — | Installer (Level Basic) | 38962 |
| Jeremy Miller | — | Installer (Level Basic) | 39500 |
| Jerry Luken Excavating | Reeds Spring, MO | Installer (Level Advanced) | 32718 |
| Joe'S Excavating Llc | Crane, MO | Installer (Level Basic) | 38553 |
| Joey Burk Excavating | Galena, MO | Installer (Level Advanced) | 33056 |
| Jones Excavating | Pierce City, MO | Installer (Level Basic) | 33283 |
| Joshua Gress | — | Installer (Level Basic) | 39534 |
| Justin Mcmillan | — | Installer (Level Basic) | 38879 |
| K & J Dirtworks Llc | Eagle Rock, MO | Installer (Level Basic) | 38554 |
| K. Davis Enterprises | Ava, MO | Installer (Level Advanced) | 37786 |
| Karson Thomas | — | Installer (Level Basic) | 39122 |
| Keeland Exc. | Lampe, MO | Installer (Level Basic) | 36997 |
| Keltner Excavating | Strafford, MO | Installer (Level Advanced) | 33574 |
| Kendrick Slane | — | Installer (Level Basic) | 39510 |
| Kimberling City Plumbing | Branson West, MO | Installer (Level Advanced) | 35272 |
| King Backhoe & Dozer Service | Seneca, MO | Installer (Level Advanced) | 38327 |
| L And M Excavating | La Russell, MO | Installer (Level Advanced) | 36834 |
| Len'S Backhoe Services | Cape Fair, MO | Installer (Level Advanced) | 35502 |
| Letts & Demery Pump | Neosho, MO | Installer (Level Basic) | 39376 |
| Letts & Demery Pump & Drilling | Neosho, MO | Installer (Level Basic) | 39391 |
| Letts & Demery Pump Inc. | Neosho, MO | Installer (Level Basic) | 39443 |
| Lewallen Excavating And Landscape | Reeds Spring, MO | Installer (Level Advanced) | 39072 |
| M.F.H. Concrete & Excavating Llc | Verona, MO | Installer (Level Advanced) | 38761 |
| Martins Remodeling Llc Dba Martins Plumbing | Mt. Vernon, MO | Installer (Level Advanced) | 39499 |
| Master'S Plan Construction, Llc | Lampe, MO | Installer (Level Advanced) | 36679 |
| Mcglothlin Services Llc | Aurora, MO | Installer (Level Advanced) | 38849 |
| Michael Wald | Carterville, MO | Installer (Level Advanced) | 34251 |
| Mike'S Independent Realty | Shell Knob, MO | Installer (Level Advanced) | 35396 |
| Missouri Septic Services | Nixa, MO | Installer (Level Basic) | 38940 |
| Missouri Soil Solutions Llc | Willard, MO | Installer (Level Advanced) | 37660 |
| Nash Realty | Cassville, MO | Installer (Level Advanced) | 31500 |
| Nathan Haney Construction | Cassville, MO | Installer (Level Advanced) | 36274 |
| Naylor'S Mowing And Construction | Kearney, MO | Installer (Level Basic) | 38942 |
| New Leaf Construction Llc | Lone Jack, MO | Installer (Level Advanced) | 37955 |
| New Life Renovations Llc | Aurora, MO | Installer (Level Basic) | 37353 |
| Norbury Electric | Carthage, MO | Installer (Level Basic) | 38875 |
| Norma Mendez | Monett, MO | Installer (Level Advanced) | 39564 |
| Norman Trucking & Excavating | Verona, MO | Installer (Level Advanced) | 35554 |
| Ormsby Construction | Nixa, MO | Installer (Level Basic) | 38280 |
| Ormsby Trucking | Aurora, MO | Installer (Level Basic) | 39336 |
| Outt Construction | Goodman, MO | Installer (Level Basic) | 37111 |
| Packwood Septic Excavation | Republic, MO | Installer (Level Advanced) | 38091 |
| Preferred General Contracting | Neosho, MO | Installer (Level Basic) | 39410 |
| Preston'S Landscaping & Construction Llc | Shell Knob, MO | Installer (Level Advanced) | 37203 |
| Pristine Landworks Llc | Miller, MO | Installer (Level Basic) | 39112 |
| R & R Dirtworks | Eureka Springs, MO | Installer (Level Advanced) | 34835 |
| Rd'S Septics & Excavating, Llc | Branson, MO | Installer (Level Basic) | 38572 |
| Richner Soil Services | Stockton, MO | Installer (Level Basic) | 36861 |
| Rikard Plumbing Llc. | Cassville, MO | Installer (Level Basic) | 38975 |
| Robert Schodrowski | Ridgedale, MO | Installer (Level Basic) | 39553 |
| Rockin A Dirtworks, Llc | Neosho, MO | Installer (Level Basic) | 39516 |
| Rockin K Excavating | Reeds Springs, MO | Installer (Level Basic) | 38935 |
| Rockin W Excavation | Exeter, MO | Installer (Level Advanced) | 38464 |
| Rockwood Farm Llc | Pineville, MO | Installer (Level Advanced) | 37932 |
| Rogers Backhoe Service | Rogersville, MO | Installer (Level Advanced) | 31992 |
| Royal Edge Inspections, Llc | Aurora, MO | Installer (Level Basic) | 38562 |
| Ryan Metcalf | — | Installer (Level Advanced) | 37876 |
| S & A Plumbing Company | Aurora, MO | Installer (Level Advanced) | 36700 |
| Sac River Land And Septic | Fair Grove, MO | Installer (Level Advanced) | 39149 |
| Sam Woolever | — | Installer (Level Advanced) | 39561 |
| Sampson'S Done Right Llc | Neosho, MO | Installer (Level Basic) | 35878 |
| Schell Construction | Cassville, MO | Installer (Level Advanced) | 39551 |
| Scott Excavating | Galena, MO | Installer (Level Advanced) | 39120 |
| Sherman Welding And Mechanics Llc | Anderson, MO | Installer (Level Basic) | 38669 |
| Shetland Excavating And Land Services | Stella, MO | Installer (Level Basic) | 38901 |
| Skylar Skaggs | — | Installer (Level Basic) | 39389 |
| Southwest Septic Pumping | Joplin, MO | Installer (Level Advanced) | 37872 |
| Special Enterprises Ltd | Cape Fair, MO | Installer (Level Basic) | 37789 |
| Springscapes Llc | Rogersville, MO | Installer (Level Advanced) | 38353 |
| State Line Septic | Noel, MO | Installer (Level Advanced) | 37695 |
| State Line Septic | Noel, MO | Installer (Level Advanced) | 37896 |
| State Line Septic | Noel, MO | Installer (Level Basic) | 38346 |
| Statewide Concrete Cutting & Equipment Llc | Strafford, MO | Installer (Level Basic) | 39280 |
| Stephens & Sons Excavating Llc | Galena, MO | Installer (Level Basic) | 37635 |
| Stephens Dirtworks | Callao, MO | Installer (Level Advanced) | 37892 |
| Steven Francisco Ii | — | Installer (Level Basic) | 39527 |
| Steven Woody | — | Installer (Level Advanced) | 39562 |
| Stewart Backhoe Service | Cassville, MO | Installer (Level Advanced) | 32823 |
| Swm Land Services | Springfield, MO | Installer (Level Basic) | 38677 |
| Table Rock Underground & Excavation | Branson West, MO | Installer (Level Advanced) | 37476 |
| Terry Blevins | St. Louis, MO | Installer (Level Advanced) | 38470 |
| The Plumbing Pioneers | Rogersville, MO | Installer (Level Advanced) | 39402 |
| Thomas Hood | Hurley, MO | Installer (Level Basic) | 38860 |
| Tice Excavation | Seneca, MO | Installer (Level Advanced) | 39128 |
| Tim Dykes Septic Systems | Marionville, MO | Installer (Level Basic) | 38524 |
| Tlb Development | Cape Fair, MO | Installer (Level Advanced) | 35892 |
| Tom'S Excavating & Hauling | Neosho, MO | Installer (Level Basic) | 33242 |
| Triple S Dirt Works | Noel, MO | Installer (Level Basic) | 39321 |
| Tws Excavation | Purdy, MO | Installer (Level Basic) | 38667 |
| Ulmer Excavating | Mt. Vernon, MO | Installer (Level Advanced) | 32867 |
| Ulmer Excavating Llc | Mt. Vernon, MO | Installer (Level Basic) | 36691 |
| Uproot Excavating & Septic | Springfield, MO | Installer (Level Basic) | 39367 |
| Vaught Construction Llc | Crane, MO | Installer (Level Basic) | 39426 |
| Ward'S Excavating | Branson West, MO | Installer (Level Advanced) | 34886 |
| Welch Homes & Construction | Shell Knob, MO | Installer (Level Advanced) | 36686 |
| White Knight Septic Services Llc | Noel, MO | Installer (Level Advanced) | 39462 |
| White River Home Inspection Services | Branson, MO | Installer (Level Advanced) | 37458 |
| White Rock Dirt Works | Pineville, MO | Installer (Level Basic) | 39415 |
| White Rock Excavating | Ava, MO | Installer (Level Advanced) | 38075 |
| Wilthom Llc | Neosho, MO | Installer (Level Basic) | 39123 |
| Woodward And Sons Land Services Llc | Seneca, MO | Installer (Level Basic) | 39475 |
| Woodward And Sons Land Services Llc | Seneca, MO | Installer (Level Basic) | 39474 |
| Young'S Dirtworks Llc | Washburn, MO | Installer (Level Basic) | 38058 |
189 companies in the Missouri DHSS registered OWTS installer list are based in Barry County as of 2026-07-23. Companies based elsewhere in Missouri also commonly serve the county.
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