Registered OWTS installers in Warren County, Missouri
113 companies on Missouri’s roster of registered onsite wastewater treatment system installers give Warren County as their address. A registered installer is a business the state has licensed for the work that installs onsite wastewater treatment systems.
- 3T Plumbing LLC(573) 291-5120RosebudInstallerLicence expires January 31, 2026
- A & M Contracting Services LLC(636) 359-7917WarrentonInstallerLicence expires September 30, 2027
- A & M Septic and Excavating(636) 262-9100ForistellInstallerLicence expires August 31, 2026
- A & S Septic and Utilities LLC(636) 398-6176New MelleInstallerLicence expires March 31, 2028
- A R C Grading, LLC(636) 290-5419Moscow MillsInstallerLicence expires November 30, 2025
- A.R.C. Grading LLC(636) 299-3659Moscow MillsInstallerLicence expires January 31, 2026
- Accurate Septic & Well Inspections(636) 358-7797St. ClairInstallerLicence expires September 30, 2028
- Accuro Services,LLC(314) 363-4793WentzvilleInstallerLicence expires December 31, 2027
- Advanced Septic & Trenching(636) 248-7879Old MonroeInstallerLicence expires January 31, 2026
- All American Septic(636) 970-9192WentzvilleInstallerLicence expires March 31, 2026
- Authority Plumbing and Drain(314) 220-6519WarrentonInstallerLicence expires May 31, 2027
- B Green Plumbing & Drain Cleaning LLC(314) 604-5000WarrentonInstallerLicence expires June 30, 2026
- B&J Septic(573) 384-5536SilexInstallerLicence expires March 31, 2027
- Backhoe Services Unlimited(636) 234-4790Villa RidgeInstallerLicence expires March 31, 2027
- Ballmann Earthworks(636) 236-4242AugustaInstallerLicence expires March 31, 2028
- Bauche Contracting LLC(636) 369-1474WashingtonInstallerLicence expires April 30, 2027
- BDG Contracting Inc(314) 478-2388St. LouisInstallerLicence expires January 31, 2028
- Benchmark Excavating LLC(636) 734-5198ForistellInstallerLicence expires July 31, 2026
- Benjamin G. Woodruff(636) 734-1668CamdentonInstallerLicence expires March 31, 2026
- Bi-State Utilities Co.(314) 209-0202St. CharlesInstallerLicence expires August 31, 2028
- Big D Pipe LLC(636) 399-7495St CharlesInstallerLicence expires May 31, 2028
- Billy Orf & Sons(573) 470-6269Bowling GreenInstallerLicence expires May 31, 2026
- Blackwood Plumbing(636) 359-5622WarrentonInstallerLicence expires May 31, 2027
- Brandl's Construction Services LLC(573) 301-7148FultonInstallerLicence expires April 30, 2027
- Brian Unnerstall(636) 660-0860Villa RidgeInstallerLicence expires August 31, 2026
- Brighthouse Plumbing(636) 600-0188FentonInstallerLicence expires January 31, 2027
- Bruce Tucker & Sons Septic LLC(636) 295-7769SilexInstallerLicence expires May 31, 2028
- Brute Force Hauling and Excavating LLC(636) 900-3079WashingtonInstallerLicence expires August 31, 2028
- Bylo Brothers Inc(636) 486-5180Wright CityInstallerLicence expires May 31, 2027
- C.Taylor Contracting LLC(636) 584-9077HermannInstallerLicence expires March 31, 2028
- Carter Backhoe(636) 980-6115WentzvilleInstallerLicence expires January 31, 2026
- Chapman Contracting(636) 629-7854Saint ClairInstallerLicence expires June 30, 2028
- Chartette Creek Excavating LLC(636) 390-3811MarthasvilleInstallerLicence expires December 31, 2027
- Courtney Construction LLC(417) 926-1479Mountain GroveInstallerLicence expires January 31, 2027
- Creason Contracting LLC(636) 528-3609TroyInstallerLicence expires April 30, 2026
- Dale Brower Custom Digging(573) 929-3985BellflowerInstallerLicence expires October 31, 2025
- Dalton CainInstallerLicence expires December 31, 2026
- DC Septic & Drain(636) 290-6382TroyInstallerLicence expires January 31, 2027
- Dempsey Investment LLC(636) 235-8181JonesburgInstallerLicence expires May 31, 2028
- DJM Ecological Services Inc.(314) 478-2388St. LouisInstallerLicence expires January 31, 2028
- Dobsch Construction LLC(314) 520-6282WashingtonInstallerLicence expires May 31, 2027
- Donald R Counts(573) 656-3234MiddletownInstallerLicence expires December 31, 2026
- Edward's Construction(636) 390-4724WashingtonInstallerLicence expires January 31, 2027
- Elbert Earthworks(636) 432-3508BergerInstallerLicence expires December 31, 2027
- Erbe Construction LLC(636) 697-7787SilexInstallerSoil evaluatorLicence expires December 31, 2026
- Figler Excavating Inc(573) 468-3434SullivanInstallerLicence expires September 30, 2027
- Fischer Excavating LLC(636) 237-3370TruxtonInstallerLicence expires February 29, 2028
- Fleer Excavating(636) 900-1772HermannInstallerLicence expires July 31, 2028
- Flynn Drilling Co(636) 528-6137TroyInstallerLicence expires November 30, 2025
- Garrett Concrete & Const. Inc(636) 384-6139Wright CityInstallerLicence expires July 31, 2028
- Gerling Excavating & Const(636) 357-8182BergerInstallerLicence expires May 31, 2026
- Gilbert & Sons Construction Inc(573) 564-3694Montgomery CtiyInstallerLicence expires January 31, 2027
- Girdner Contracting LLC(636) 266-8788Villa RidgeInstallerLicence expires May 31, 2026
- Grease Masters(636) 916-3115St. CharlesInstallerLicence expires November 30, 2026
- Greater Missouri Homes LLC(636) 667-2461AugustaInstallerLicence expires May 31, 2026
- H.S. Plumbing LLC(314) 503-3416TroyInstallerLicence expires June 30, 2026
- Henry Excavating(573) 466-6016AuxvasseInstallerLicence expires February 28, 2028
- Ice Services LLC(636) 841-8688Warner RobinsInstallerLicence expires January 31, 2028
- Intelligent Plumbing Solutions(314) 956-4977New MelleInstallerLicence expires March 31, 2028
- J-L Page Excavation(573) 690-0326RhinelandInstallerLicence expires June 30, 2027
- J&M Excavating Services LLC(636) 359-2200HermannInstallerLicence expires January 31, 2026
- Jake's Backhoe and Construction(573) 619-9703HermannInstallerSoil evaluatorLicence expires March 31, 2028
- Jarvis Excavating LLC(573) 259-3478OwensvilleInstallerLicence expires September 30, 2027
- Jeff Roderfeld Const. LLC(636) 459-1706St. CharlesInstallerLicence expires July 30, 2028
- Jemm Excavating Inc(636) 262-6561St. CharlesInstallerLicence expires October 31, 2028
- Jesse Kleinheider Contracting LLC(636) 667-2878WashingtonInstallerLicence expires February 28, 2026
- Jody Schmidt Well & Sewer Service(636) 262-1054New MelleInstallerLicence expires January 31, 2026
- K&P Services LLC(816) 854-9091Blue SpringsInstallerLicence expires August 31, 2028
- KC Land & Lawn(636) 359-5126WarrentonInstallerLicence expires August 31, 2028
- Klemme's Backhoe Service(636) 398-6142WentzvilleInstallerLicence expires March 31, 2026
- LHS Hauling & Grading(636) 297-7063WarrentonInstallerLicence expires April 30, 2027
- M Turpin Services LLC(636) 262-6230Wright CityInstallerLicence expires February 28, 2026
- MACC Construction LLC(636) 262-4262ForistellInstallerLicence expires September 30, 2026
- Matt Girardier Excavating(636) 399-5247St ClairInstallerLicence expires April 30, 2028
- Meyerott Enterprises, LLC(636) 485-1215St. CharlesInstallerLicence expires May 31, 2028
- Mick Mehler and Sons, Inc(573) 384-5978SilexInstallerLicence expires May 31, 2027
- Mick's Mehler & Sons, Inc(573) 384-5978SilexInstallerLicence expires December 31, 2025
- Mike Henry Excavating, LLC(636) 775-0811SilexInstallerLicence expires June 30, 2028
- Mike's Septic & Dirtwork LLC(636) 295-0465FoleyInstallerLicence expires May 31, 2028
- Modern Pumping and Sewer Services LLC(314) 662-5179O'FallonInstallerLicence expires September 30, 2028
- NewShu Contracting LLC(314) 578-0145LonedellInstallerLicence expires January 31, 2028
- Nick Garrett Digging & Grading LLC(314) 852-7658JonesburgInstallerLicence expires January 31, 2028
- O'Brien Construction & Excavation(573) 898-5539ElsberryInstallerLicence expires April 30, 2028
- O'Fallon Sewer Service(636) 281-2200O'FallonInstallerLicence expires April 30, 2026
- O"Fallon Sewer Service(636) 281-2200O'FallonInstallerLicence expires December 31, 2026
- Ofallon Sewer ServiceInstallerLicence expires May 31, 2027
- Orf Construction Inc(573) 324-3552Bowling GreenInstallerLicence expires March 31, 2026
- Outdoor Works LLC(314) 393-7987ForistellInstallerLicence expires March 31, 2028
- Parker Petroleum Sales & Service(314) 401-5447TroyInstallerLicence expires February 28, 2027
- Poeling Construction(636) 463-2437ForistellInstallerLicence expires April 30, 2026
- Pruessner Contracting LLC(636) 900-2728New HavenInstallerLicence expires February 28, 2026
- Reliable Septic & Portable Toilet(573) 239-0280HermannInstallerLicence expires September 30, 2027
- Rhyno Septic LLC(314) 280-7929TroyInstallerLicence expires March 31, 2028
- Rich Gullet & Sons(636) 271-2327PacificInstallerLicence expires April 30, 2028
- RT Construction(573) 240-4049Rocky MountInstallerLicence expires September 11, 2027
- Rust Construction LLC(636) 745-3426InnsbrookInstallerLicence expires April 30, 2026
- S&S Utility contracting(314) 220-5611OfallonInstallerLicence expires January 31, 2026
- Sam's Home & Commercial Inspectors(573) 202-6062VichyInstallerLicence expires August 31, 2028
- Second Nature Excavation and Hardscapes(573) 694-8696New HavenInstallerLicence expires March 31, 2028
- Semke Grading and Pipe(636) 250-4225Saint CharlesInstallerLicence expires May 31, 2028
- Septic Services, Inc.(636) 583-5564UnionInstallerLicence expires January 31, 2026
- Show Me Soils(636) 629-1788LonedellInstallerSoil evaluatorLicence expires April 30, 2026
- Southern Ditching & Excavating Co(636) 441-1112O'FallonInstallerLicence expires May 31, 2026
- Starks Excavating LLC(636) 359-5022WarrentonInstallerLicence expires November 30, 2025
- Superier Heating & Cooling(636) 926-0000Lake St. LouisInstallerLicence expires January 31, 2026
- Trinity Ditching LLC(636) 462-2084TroyInstallerLicence expires May 31, 2026
- Turnbull Contracting, LLC(573) 324-6922Bowling GreenInstallerLicence expires March 31, 2028
- Turner Septic & Grading LLC(636) 364-2804TroyInstallerLicence expires December 31, 2026
- United Property ServicesInstallerLicence expires September 30, 2026
- Volz Incorporated(314) 890-1264Saint LouisInstallerLicence expires December 31, 2026
- Weber Construction LLC(636) 584-0283UnionInstallerLicence expires July 31, 2026
- Wehmeyer Farm(636) 368-8264Moscow MillsInstallerLicence expires August 31, 2027
- WM Mueller Trenching and Excavating(636) 980-7757St. CharlesInstallerLicence expires May 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.