Registered OWTS installers in Cooper County, Missouri
68 companies on Missouri’s roster of registered onsite wastewater treatment system installers give Cooper County as their address. A registered installer is a business the state has licensed for the work that installs onsite wastewater treatment systems.
- ABC Sewerman Installation and Maintenance(573) 378-6305Gravois MillsInstallerLicence expires June 30, 2026
- Accuro Services,LLC(314) 363-4793WentzvilleInstallerLicence expires December 31, 2027
- Adamson Construction & Investment(573) 673-2405ColumbiaInstallerLicence expires March 31, 2028
- All Clear Pumping & Sewer(573) 634-0165CentertownInstallerLicence expires January 31, 2026
- Arthur Ratliff Tree and Stump Removal(573) 446-2266ColumbiaInstallerLicence expires January 31, 2028
- Bentlage Bobcat(573) 823-8769AshlandInstallerLicence expires July 31, 2028
- Bio-Gard Inc(573) 442-0692ColumbiaInstallerLicence expires March 30, 2027
- Blacktop, LLC(417) 533-4026LynchburgInstallerLicence expires May 31, 2028
- Brandl's Construction Services LLC(573) 301-7148FultonInstallerLicence expires April 30, 2027
- Brian Carl SC Site Development(573) 789-6683Cole CampInstallerLicence expires July 31, 2026
- Brian Wear Plumbing(573) 864-4463ColumbiaInstallerLicence expires May 31, 2028
- C & E Excavating(660) 829-3478SedaliaInstallerLicence expires March 31, 2026
- C.L. Richardson(573) 682-4452AshlandInstallerLicence expires April 30, 2027
- C&H Septic Service's(660) 263-7901MoberlyInstallerLicence expires July 31, 2026
- Carpenter Earthworks LLC(573) 353-2530CaliforniaInstallerLicence expires September 30, 2028
- Carter Concrete & Excavating(573) 881-6333HarrisburgInstallerLicence expires February 28, 2026
- Castle Custom Homes(573) 356-1050ColumbiaInstallerLicence expires September 30, 2026
- Central Missouri Home Inspections LLC(573) 289-7077ColumbiaInstallerSoil evaluatorLicence expires April 30, 2026
- Courtney Construction LLC(417) 926-1479Mountain GroveInstallerLicence expires January 31, 2027
- CW Lillig Contracting(913) 653-3974ColumbiaInstallerLicence expires January 31, 2026
- Double D. Dirtworks LLC(573) 999-7224FayetteInstallerLicence expires December 31, 2026
- Down 2 Earth Excavation Construction LLC(660) 287-6827SedaliaInstallerLicence expires March 31, 2027
- Elite Wastewater Solutions LLC(573) 687-7011SturgeonInstallerLicence expires March 31, 2028
- Fox Earthworx LLC(873) 789-6522VersaillesInstallerLicence expires January 31, 2028
- Gallop Excavating LLC(660) 651-8167MadisonInstallerLicence expires May 31, 2028
- GBK Excavating(573) 239-2215SturgeonInstallerLicence expires May 31, 2026
- Good Neighbor Soil Evaluators(443) 567-3536HallsvilleInstallerSoil evaluatorLicence expires January 31, 2026
- Hardcore Excavating(573) 356-9930BoonvilleInstallerLicence expires May 31, 2027
- Haskamp Excavation(573) 825-3878RocheportInstallerLicence expires May 31, 2026
- Haskamp Excavation(573) 825-3878ColumbiaInstallerLicence expires May 31, 2028
- Honest Abe’s(573) 514-8146EldonInstallerLicence expires January 31, 2026
- Honest Abe's Home Services(573) 286-7540Osage BeachInstallerLicence expires November 30, 2025
- Imhoff Dozing & TrenchingInstallerLicence expires June 30, 2027
- J &E Septic(573) 533-0051JamestownInstallerLicence expires December 31, 2026
- Jack D. Hall(660) 287-3522LaMonteInstallerLicence expires August 31, 2026
- Joe Brooks(573) 530-0124CentraliaInstallerLicence expires September 30, 2027
- K&P Services LLC(816) 854-9091Blue SpringsInstallerLicence expires August 31, 2028
- Kevin Sublett Excavating(573) 808-5703HarrisburgInstallerLicence expires May 31, 2027
- Korte Excavation(573) 645-4853RussellvilleInstallerLicence expires April 30, 2027
- Kumberg Excavation and Landscaping LLC(573) 378-8327VersaillesInstallerLicence expires September 30, 2026
- MasterTech Plumbing(573) 445-7283ColumbiaInstallerLicence expires October 31, 2026
- Matthew SpencerInstallerLicence expires July 31, 2026
- McGinnis H-S Septic Service(573) 374-5528VersaillesInstallerLicence expires May 31, 2026
- Mid-Mo Dirtworx and Land Management LLC(573) 789-4158VersaillesInstallerLicence expires January 31, 2026
- Midstate Builders(660) 848-3005New FranklinInstallerLicence expires March 31, 2026
- Missouri Septic & Excavation(660) 631-3711SlaterInstallerLicence expires October 31, 2026
- National Property Inspections COMO(573) 569-9622ColumbiaInstallerLicence expires September 30, 2028
- Powers Construction LLC.(573) 657-4105HartsburgInstallerLicence expires February 28, 2027
- Robbey D Harvey Gen Carpentry(660) 621-1600New FranklinInstallerLicence expires May 31, 2026
- Rock Creek Excavating LLC(660) 631-2376SlaterInstallerLicence expires July 31, 2028
- Roger Morris(573) 881-1428AshlandInstallerLicence expires April 30, 2026
- Russell Sapp Exc(573) 443-4888ColumbiaInstallerLicence expires July 31, 2026
- S & A Equipment & Builders(573) 220-3653FultonInstallerLicence expires May 31, 2027
- Sam's Home & Commercial Inspectors(573) 202-6062VichyInstallerLicence expires August 31, 2028
- SC Precision Construction Inc(253) 241-8647SedaliaInstallerLicence expires October 31, 2026
- Sedalia Septic & Drain(660) 221-5200Green RidgeInstallerLicence expires March 31, 2026
- Sensenig Excavating & Contracting LLC(660) 553-7710MoraInstallerLicence expires October 31, 2026
- Shay Mechanical(660) 882-2665BoonvilleInstallerLicence expires March 31, 2028
- Sublett Trucking LLC(573) 808-5323ClarkInstallerLicence expires May 31, 2027
- Sutton Excavating(573) 881-5984SturgeonInstallerLicence expires September 30, 2027
- Terraform Excavation(573) 268-7536ColumbiaInstallerLicence expires May 31, 2026
- Thoma Construction LLC(660) 537-3543ColumbiaInstallerLicence expires February 28, 2027
- Thomas Colter(573) 680-5708Holts SummitInstallerLicence expires May 31, 2027
- Tim Sublett Exc(573) 239-1355HarrisburgInstallerLicence expires June 30, 2027
- Todd McDonald(573) 529-6836Prairie HomeInstallerLicence expires January 31, 2026
- Tree Frog Ventures LLC(573) 673-9929AshlandInstallerLicence expires March 31, 2026
- Valley Mobile Homes LLC(573) 539-2081VersaillesInstallerLicence expires January 31, 2028
- Wendling & Son's(573) 489-7576WoolridgeInstallerLicence expires January 31, 2028
What “Registered OWTS installer” means in Missouri
Being on this roster means Missouri DHSS has licensed this business for installs onsite wastewater treatment systems. It is not a rating, a review, or a statement about price, insurance or workmanship.
Registrations carry an expiration date, shown on every listing. The state republishes the dataset as registrations change.
Before you hire, confirm the licence with Missouri DHSS, or the state's own published registration data. How to verify →
Registered OWTS installers in neighbouring counties
Records as published August 26, 2026. Report a correction.