Registered OWTS installers in St. Charles County, Missouri
131 companies on Missouri’s roster of registered onsite wastewater treatment system installers give St. Charles County as their address. A registered installer is a business the state has licensed for the work that installs onsite wastewater treatment systems.
- 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
- ABBCO Plumbing & Drain LLC(636) 250-3221St. CharlesInstallerLicence expires December 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
- Bill Martin Construction LLC(636) 271-2653EurekaInstallerLicence expires May 31, 2026
- Blackwood Plumbing(636) 359-5622WarrentonInstallerLicence expires May 31, 2027
- Bloomsdale Excavating Company, Inc(573) 483-2564BloomsdaleInstallerLicence expires August 31, 2026
- 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
- Bylo Brothers Inc(636) 486-5180Wright CityInstallerLicence expires May 31, 2027
- C & H Plumbing Company(314) 494-8042St LouisInstallerLicence expires May 31, 2026
- C.Taylor Contracting LLC(636) 584-9077HermannInstallerLicence expires March 31, 2028
- Carter Backhoe(636) 980-6115WentzvilleInstallerLicence expires January 31, 2026
- Cavaness Contracting(314) 972-2383ImperialInstallerLicence expires January 31, 2027
- Chartette Creek Excavating LLC(636) 390-3811MarthasvilleInstallerLicence expires December 31, 2027
- clubbs home remodeling(636) 228-3422ofallonInstallerLicence expires October 31, 2026
- CMK Land Management(636) 303-9831UnionInstallerLicence expires October 31, 2026
- Commercial Drain & Sewer Cleaning Inc(636) 282-1775ArnoldInstallerLicence expires February 28, 2028
- Courtney Construction LLC(417) 926-1479Mountain GroveInstallerLicence expires January 31, 2027
- Creason Contracting LLC(636) 528-3609TroyInstallerLicence expires April 30, 2026
- CSO Environmental Services, Inc(217) 522-4085SpringfieldInstallerLicence expires March 31, 2027
- 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
- Dotson & Gibbs Inc(573) 985-3700New LondonInstallerLicence expires April 30, 2028
- Earthworx Excavating & Bobcat Services, Inc(314) 574-6305Villa RidgeInstallerLicence expires June 30, 2026
- Ed Bellm Plumbing Co(314) 383-1436St. LouisInstallerLicence expires May 31, 2026
- Erbe Construction LLC(636) 697-7787SilexInstallerSoil evaluatorLicence expires December 31, 2026
- Fischer Excavating LLC(636) 237-3370TruxtonInstallerLicence expires February 29, 2028
- Fleer Excavating(636) 900-1772HermannInstallerLicence expires July 31, 2028
- Flowmasters Plumbing LLC(314) 733-0334OverlandInstallerLicence expires August 31, 2026
- Flynn Drilling Co(636) 528-6137TroyInstallerLicence expires November 30, 2025
- Four Seasons Ground Maintenance(314) 872-0034WentzvilleInstallerLicence expires September 30, 2026
- Garrett Concrete & Const. Inc(636) 384-6139Wright CityInstallerLicence expires July 31, 2028
- Gerling Excavating & Const(636) 357-8182BergerInstallerLicence expires May 31, 2026
- 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
- Ice Services LLC(636) 841-8688Warner RobinsInstallerLicence expires January 31, 2028
- Integrated Facility Services(314) 208-1760FentonInstallerLicence expires August 31, 2028
- Integrity Septic and Sewer LLC(314) 280-6097PacificInstallerLicence expires May 31, 2028
- Intelligent Plumbing Solutions(314) 956-4977New MelleInstallerLicence expires March 31, 2028
- 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
- JTL(314) 831-3954St. CharlesInstallerLicence expires July 31, 2027
- K&P Services LLC(816) 854-9091Blue SpringsInstallerLicence expires August 31, 2028
- KC Land & Lawn(636) 359-5126WarrentonInstallerLicence expires August 31, 2028
- Kelpe Contracting Inc(636) 458-1400WildwoodInstallerLicence expires January 31, 2026
- Klemme's Backhoe Service(636) 398-6142WentzvilleInstallerLicence expires March 31, 2026
- Kolb Grading LLC(314) 524-7223St. CharlesInstallerLicence expires January 31, 2026
- Leeker Construction Co(314) 355-0078St. LouisInstallerSoil evaluatorLicence expires June 30, 2027
- Lewis Plumbing llc.(636) 524-3500HillsboroInstallerLicence expires July 31, 2028
- 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
- MC Plumbing & Excavating LLC(636) 393-9382LabadieInstallerLicence expires September 30, 2026
- Merlo Plumbing, Co., Inc(314) 843-1000St. LouisInstallerLicence expires August 31, 2026
- 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
- Mots Excavation LLC(314) 974-5756HillsboroInstallerLicence expires November 30, 2028
- Mr Rooter stl(314) 656-7277FentonInstallerLicence expires January 31, 2028
- Mr. Rooter(314) 665-2157FentonInstallerLicence expires May 31, 2028
- Murphy Company Mechanical Contractors and Engineer(314) 997-6600St. LouisInstallerLicence expires December 31, 2026
- NewShu Contracting LLC(314) 578-0145LonedellInstallerLicence expires January 31, 2028
- No Limits Excavating LLC(314) 280-2868Villa RidgeInstallerLicence expires May 31, 2027
- 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
- Olmsted Contracting(618) 977-6543AltonInstallerLicence expires July 31, 2027
- Orf Construction Inc(573) 324-3552Bowling GreenInstallerLicence expires March 31, 2026
- Orf Construction Inc(573) 324-3552Bowling GreenInstallerLicence expires May 31, 2028
- Parker Petroleum Sales & Service(314) 401-5447TroyInstallerLicence expires February 28, 2027
- Poeling Construction(636) 463-2437ForistellInstallerLicence expires April 30, 2026
- Pro-Com Septic & Excavation LLC(636) 222-8128Valles MinesInstallerLicence expires March 31, 2028
- Pruessner Contracting LLC(636) 900-2728New HavenInstallerLicence expires February 28, 2026
- 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
- Samuel Heating and Cooling(314) 398-2323St. LouisInstallerLicence expires November 30, 2025
- 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
- Septic Solutions(314) 216-1937House SpringsInstallerLicence expires September 30, 2028
- Shay Noa Construction LLC(636) 219-1560Lake Saint LouisInstallerLicence expires April 30, 2027
- Show Me Soils(636) 629-1788LonedellInstallerSoil evaluatorLicence expires April 30, 2026
- Southern Ditching & Excavating Co(636) 441-1112O'FallonInstallerLicence expires May 31, 2026
- STL Sewer Cams LLC(314) 675-0605BarnhartInstallerLicence expires May 31, 2026
- Superier Heating & Cooling(636) 926-0000Lake St. LouisInstallerLicence expires January 31, 2026
- Superior Sewer Co(314) 931-4738St. LouisInstallerLicence expires July 31, 2026
- Sween Co(636) 699-6882WentzvilleInstallerLicence expires October 31, 2026
- Trinity Ditching LLC(636) 462-2084TroyInstallerLicence expires May 31, 2026
- Turnbull Contracting, LLC(573) 324-6922Bowling GreenInstallerLicence expires March 31, 2028
- United Property ServicesInstallerLicence expires September 30, 2026
- Unnerstall Contracting Co., Ltd(636) 257-3003PacificInstallerLicence expires February 28, 2026
- Volz Incorporated(314) 890-1264Saint LouisInstallerLicence expires December 31, 2026
- Wehmeyer Farm(636) 368-8264Moscow MillsInstallerLicence expires August 31, 2027
- Wehmeyer Farms, Inc.(636) 368-8264Moscow MillsInstallerLicence expires April 30, 2027
- Wiggs Plumbing LLCInstallerLicence expires September 30, 2026
- William H. Bond Engineering(573) 483-2175Ste. GenevieveInstallerSoil evaluatorLicence expires March 31, 2026
- Wm G Cocos Co Inc(314) 631-2688St LouisInstallerLicence expires August 31, 2026
- WM Mueller Trenching and Excavating(636) 980-7757St. CharlesInstallerLicence expires May 31, 2028
- X-L Contracting(314) 280-1248Saint PetersInstallerLicence expires October 31, 2026
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.