Licensed septic companies in St. Charles County, Missouri

149 businesses on Missouri’s septic licensing records give St. Charles County as its address, alongside 13 individually licensed onsite professionals.

131 registered owts installers →22 registered onsite soil evaluators →13 registered onsite wastewater professionals →

Licensed businesses based in St. Charles County

7 Oaks Home Inspections
(636) 456-0001Warren
Soil evaluatorLicence expires November 30, 2026
A & M Septic and Excavating
(636) 262-9100Foristell
InstallerLicence expires August 31, 2026
A & S Septic and Utilities LLC
(636) 398-6176New Melle
InstallerLicence expires March 31, 2028
A R C Grading, LLC
(636) 290-5419Moscow Mills
InstallerLicence expires November 30, 2025
A.R.C. Grading LLC
(636) 299-3659Moscow Mills
InstallerLicence expires January 31, 2026
ABBCO Plumbing & Drain LLC
(636) 250-3221St. Charles
InstallerLicence expires December 31, 2026
Accurate Septic & Well Inspections
(636) 358-7797St. Clair
InstallerLicence expires September 30, 2028
Accurate Septic & Well Inspections
(636) 262-1303St Charles
Soil evaluatorLicence expires August 31, 2028
Accuro Services,LLC
(314) 363-4793Wentzville
InstallerLicence expires December 31, 2027
Advanced Septic & Trenching
(636) 248-7879Old Monroe
InstallerLicence expires January 31, 2026
All American Septic
(636) 970-9192Wentzville
InstallerLicence expires March 31, 2026
Authority Plumbing and Drain
(314) 220-6519Warrenton
InstallerLicence expires May 31, 2027
B Green Plumbing & Drain Cleaning LLC
(314) 604-5000Warrenton
InstallerLicence expires June 30, 2026
B&J Septic
(573) 384-5536Silex
InstallerLicence expires March 31, 2027
Backhoe Services Unlimited
(636) 234-4790Villa Ridge
InstallerLicence expires March 31, 2027
Ballmann Earthworks
(636) 236-4242Augusta
InstallerLicence expires March 31, 2028
Bauche Contracting LLC
(636) 369-1474Washington
InstallerLicence expires April 30, 2027
BDG Contracting Inc
(314) 478-2388St. Louis
InstallerLicence expires January 31, 2028
Benchmark Excavating LLC
(636) 734-5198Foristell
InstallerLicence expires July 31, 2026
Benjamin G. Woodruff
(636) 734-1668Camdenton
InstallerLicence expires March 31, 2026
Bi-State Utilities Co.
(314) 209-0202St. Charles
InstallerLicence expires August 31, 2028
Big D Pipe LLC
(636) 399-7495St Charles
InstallerLicence expires May 31, 2028
Bill Martin Construction LLC
(636) 271-2653Eureka
InstallerLicence expires May 31, 2026
Blackwood Plumbing
(636) 359-5622Warrenton
InstallerLicence expires May 31, 2027
Bloomsdale Excavating Company, Inc
(573) 483-2564Bloomsdale
InstallerLicence expires August 31, 2026
BPG Inspections
(800) 285-3001St. Louis
Soil evaluatorLicence expires September 30, 2028
Brenda K. Rush
(636) 296-1211Dittmer
Soil evaluatorLicence expires April 30, 2027
Brian Unnerstall
(636) 660-0860Villa Ridge
InstallerLicence expires August 31, 2026
Brighthouse Plumbing
(636) 600-0188Fenton
InstallerLicence expires January 31, 2027
Bruce Tucker & Sons Septic LLC
(636) 295-7769Silex
InstallerLicence expires May 31, 2028
Bylo Brothers Inc
(636) 486-5180Wright City
InstallerLicence expires May 31, 2027
C & H Plumbing Company
(314) 494-8042St Louis
InstallerLicence expires May 31, 2026
C.Taylor Contracting LLC
(636) 584-9077Hermann
InstallerLicence expires March 31, 2028
Carter Backhoe
(636) 980-6115Wentzville
InstallerLicence expires January 31, 2026
Cavaness Contracting
(314) 972-2383Imperial
InstallerLicence expires January 31, 2027
Chapman Contracting
(636) 629-7854St. Clair
Soil evaluatorLicence expires March 31, 2027
Chartette Creek Excavating LLC
(636) 390-3811Marthasville
InstallerLicence expires December 31, 2027
clubbs home remodeling
(636) 228-3422ofallon
InstallerLicence expires October 31, 2026
CMK Land Management
(636) 303-9831Union
InstallerLicence expires October 31, 2026
Commercial Drain & Sewer Cleaning Inc
(636) 282-1775Arnold
InstallerLicence expires February 28, 2028
Courtney Construction LLC
(417) 926-1479Mountain Grove
InstallerLicence expires January 31, 2027
Creason Contracting LLC
(636) 528-3609Troy
InstallerLicence expires April 30, 2026
CSO Environmental Services, Inc
(217) 522-4085Springfield
InstallerLicence expires March 31, 2027
Dalton Cain
(636) 278-0188
InstallerLicence expires December 31, 2026
DC Septic & Drain
(636) 290-6382Troy
InstallerLicence expires January 31, 2027
Dempsey Investment LLC
(636) 235-8181Jonesburg
InstallerLicence expires May 31, 2028
DJM Ecological Services Inc.
(314) 478-2388St. Louis
InstallerLicence expires January 31, 2028
Dobsch Construction LLC
(314) 520-6282Washington
InstallerLicence expires May 31, 2027
Dotson & Gibbs Inc
(573) 985-3700New London
InstallerLicence expires April 30, 2028
Earthworx Excavating & Bobcat Services, Inc
(314) 574-6305Villa Ridge
InstallerLicence expires June 30, 2026
Ed Bellm Plumbing Co
(314) 383-1436St. Louis
InstallerLicence expires May 31, 2026
Erbe Construction LLC
(636) 697-7787Silex
InstallerSoil evaluatorLicence expires December 31, 2026
Fischer Excavating LLC
(636) 237-3370Truxton
InstallerLicence expires February 29, 2028
Fleer Excavating
(636) 900-1772Hermann
InstallerLicence expires July 31, 2028
Flowmasters Plumbing LLC
(314) 733-0334Overland
InstallerLicence expires August 31, 2026
Flynn Drilling Co
(636) 528-6137Troy
InstallerLicence expires November 30, 2025
Four Seasons Ground Maintenance
(314) 872-0034Wentzville
InstallerLicence expires September 30, 2026
Gaines Soil Consulting
(636) 947-1221Worden
Soil evaluatorLicence expires March 31, 2026
Garrett Concrete & Const. Inc
(636) 384-6139Wright City
InstallerLicence expires July 31, 2028
Garrett Concrete & Constr Inc.
(636) 384-6139Wright City
Soil evaluatorLicence expires August 31, 2028
Gerling Excavating & Const
(636) 357-8182Berger
InstallerLicence expires May 31, 2026
Girdner Contracting LLC
(636) 266-8788Villa Ridge
InstallerLicence expires May 31, 2026
Grease Masters
(636) 916-3115St. Charles
InstallerLicence expires November 30, 2026
Greater Missouri Homes LLC
(636) 667-2461Augusta
InstallerLicence expires May 31, 2026
H.S. Plumbing LLC
(314) 503-3416Troy
InstallerLicence expires June 30, 2026
Harwood Environmental Services
(314) 695-2364St. Louis
Soil evaluatorLicence expires March 31, 2026
Home & Farm Soil Consulting
(573) 237-5081New Haven
Soil evaluatorLicence expires October 31, 2025
Ice Services LLC
(636) 841-8688Warner Robins
InstallerLicence expires January 31, 2028
Integrated Facility Services
(314) 208-1760Fenton
InstallerLicence expires August 31, 2028
Integrity Septic and Sewer LLC
(314) 280-6097Pacific
InstallerLicence expires May 31, 2028
Intelligent Plumbing Solutions
(314) 956-4977New Melle
InstallerLicence expires March 31, 2028
JCTB Inspections
(636) 293-3710Eolia
Soil evaluatorLicence expires July 31, 2028
Jeff Roderfeld Const. LLC
(636) 459-1706St. Charles
InstallerLicence expires July 30, 2028
Jemm Excavating Inc
(636) 262-6561St. Charles
InstallerLicence expires October 31, 2028
Jesse Kleinheider Contracting LLC
(636) 667-2878Washington
InstallerLicence expires February 28, 2026
Jody Schmidt Well & Sewer Service
(636) 262-1054New Melle
InstallerLicence expires January 31, 2026
JTL
(314) 831-3954St. Charles
InstallerLicence expires July 31, 2027
K&P Services LLC
(816) 854-9091Blue Springs
InstallerLicence expires August 31, 2028
KC Land & Lawn
(636) 359-5126Warrenton
InstallerLicence expires August 31, 2028
Kelpe Contracting Inc
(636) 458-1400Wildwood
InstallerLicence expires January 31, 2026
Klemme's Backhoe Service
(636) 398-6142Wentzville
InstallerLicence expires March 31, 2026
Kolb Grading LLC
(314) 524-7223St. Charles
InstallerLicence expires January 31, 2026
Leeker Construction Co
(314) 355-0078St. Louis
InstallerSoil evaluatorLicence expires June 30, 2027
Lewis Plumbing llc.
(636) 524-3500Hillsboro
InstallerLicence expires July 31, 2028
LHS Hauling & Grading
(636) 297-7063Warrenton
InstallerLicence expires April 30, 2027
M Turpin Services LLC
(636) 262-6230Wright City
InstallerLicence expires February 28, 2026
MACC Construction LLC
(636) 262-4262Foristell
InstallerLicence expires September 30, 2026
MC Plumbing & Excavating LLC
(636) 393-9382Labadie
InstallerLicence expires September 30, 2026
Merlo Plumbing, Co., Inc
(314) 843-1000St. Louis
InstallerLicence expires August 31, 2026
Meyerott Enterprises, LLC
(636) 485-1215St. Charles
InstallerLicence expires May 31, 2028
Mick Mehler and Sons, Inc
(573) 384-5978Silex
InstallerLicence expires May 31, 2027
Mick's Mehler & Sons, Inc
(573) 384-5978Silex
InstallerLicence expires December 31, 2025
Mike Henry Excavating, LLC
(636) 775-0811Silex
InstallerLicence expires June 30, 2028
Mike's Septic & Dirtwork LLC
(636) 295-0465Foley
InstallerLicence expires May 31, 2028
Missouri Property Inspections
(636) 528-1554Cottleville
Soil evaluatorLicence expires August 31, 2027
Modern Pumping and Sewer Services LLC
(314) 662-5179O'Fallon
InstallerLicence expires September 30, 2028
Mots Excavation LLC
(314) 974-5756Hillsboro
InstallerLicence expires November 30, 2028
Mr Rooter stl
(314) 656-7277Fenton
InstallerLicence expires January 31, 2028
Mr. Rooter
(314) 665-2157Fenton
InstallerLicence expires May 31, 2028
Murphy Company Mechanical Contractors and Engineer
(314) 997-6600St. Louis
InstallerLicence expires December 31, 2026
NewShu Contracting LLC
(314) 578-0145Lonedell
InstallerLicence expires January 31, 2028
No Limits Excavating LLC
(314) 280-2868Villa Ridge
InstallerLicence expires May 31, 2027
O'Brien Construction & Excavation
(573) 898-5539Elsberry
InstallerLicence expires April 30, 2028
O'Fallon Sewer Service
(636) 281-2200O'Fallon
InstallerLicence expires April 30, 2026
O"Fallon Sewer Service
(636) 281-2200O'Fallon
InstallerLicence expires December 31, 2026
Olmsted Contracting
(618) 977-6543Alton
InstallerLicence expires July 31, 2027
On-Site Soils
(888) 878-1461Chesterfield
Soil evaluatorLicence expires June 30, 2026
On-Site Soils
(314) 341-3888Chesterfield
Soil evaluatorLicence expires March 31, 2026
Orf Construction Inc
(573) 324-3552Bowling Green
InstallerLicence expires March 31, 2026
Orf Construction Inc
(573) 324-3552Bowling Green
InstallerLicence expires May 31, 2028
Parker Petroleum Sales & Service
(314) 401-5447Troy
InstallerLicence expires February 28, 2027
Poeling Construction
(636) 463-2437Foristell
InstallerLicence expires April 30, 2026
Pro-Com Septic & Excavation LLC
(636) 222-8128Valles Mines
InstallerLicence expires March 31, 2028
Protect Home Inspections
(314) 937-6909Washington
Soil evaluatorLicence expires April 30, 2028
Pruessner Contracting LLC
(636) 900-2728New Haven
InstallerLicence expires February 28, 2026
Rhyno Septic LLC
(314) 280-7929Troy
InstallerLicence expires March 31, 2028
Rich Gullet & Sons
(636) 271-2327Pacific
InstallerLicence expires April 30, 2028
RT Construction
(573) 240-4049Rocky Mount
InstallerLicence expires September 11, 2027
Rust Construction LLC
(636) 745-3426Innsbrook
InstallerLicence expires April 30, 2026
S&S Utility contracting
(314) 220-5611Ofallon
InstallerLicence expires January 31, 2026
Sam's Home & Commercial Inspectors
(573) 202-6062Vichy
InstallerLicence expires August 31, 2028
Samuel Heating and Cooling
(314) 398-2323St. Louis
InstallerLicence expires November 30, 2025
Samuel Plumbing & Drain Laying
(314) 398-2323St. Louis
Soil evaluatorLicence expires August 31, 2026
Second Nature Excavation and Hardscapes
(573) 694-8696New Haven
InstallerLicence expires March 31, 2028
Select sewer Inspections
(636) 214-9079Florissant
Soil evaluatorLicence expires November 30, 2026
Semke Grading and Pipe
(636) 250-4225Saint Charles
InstallerLicence expires May 31, 2028
Septic Services, Inc.
(636) 583-5564Union
InstallerLicence expires January 31, 2026
Septic Solutions
(314) 216-1937House Springs
InstallerLicence expires September 30, 2028
Shay Noa Construction LLC
(636) 219-1560Lake Saint Louis
InstallerLicence expires April 30, 2027
Show Me Soils
(636) 629-1788Lonedell
InstallerSoil evaluatorLicence expires April 30, 2026
Southern Ditching & Excavating Co
(636) 441-1112O'Fallon
InstallerLicence expires May 31, 2026
STL Sewer Cams LLC
(314) 675-0605Barnhart
InstallerLicence expires May 31, 2026
Superier Heating & Cooling
(636) 926-0000Lake St. Louis
InstallerLicence expires January 31, 2026
Superior Sewer Co
(314) 931-4738St. Louis
InstallerLicence expires July 31, 2026
Superior Sewer Company
(314) 437-0522St. Louis
Soil evaluatorLicence expires February 28, 2026
Sween Co
(636) 699-6882Wentzville
InstallerLicence expires October 31, 2026
T.G. Rankin Company, Inc.
(636) 532-4555Chesterfield
Soil evaluatorLicence expires July 31, 2028
Trinity Ditching LLC
(636) 462-2084Troy
InstallerLicence expires May 31, 2026
Turnbull Contracting, LLC
(573) 324-6922Bowling Green
InstallerLicence expires March 31, 2028
United Property Services
(636) 358-8575
InstallerLicence expires September 30, 2026
Unnerstall Contracting Co., Ltd
(636) 257-3003Pacific
InstallerLicence expires February 28, 2026
Volz Incorporated
(314) 890-1264Saint Louis
InstallerLicence expires December 31, 2026
Wehmeyer Farm
(636) 368-8264Moscow Mills
InstallerLicence expires August 31, 2027
Wehmeyer Farms, Inc.
(636) 368-8264Moscow Mills
InstallerLicence expires April 30, 2027
Wiggs Plumbing LLC
(314) 299-2216
InstallerLicence expires September 30, 2026
William H. Bond Engineering
(573) 483-2175Ste. Genevieve
InstallerSoil evaluatorLicence expires March 31, 2026
Wm G Cocos Co Inc
(314) 631-2688St Louis
InstallerLicence expires August 31, 2026
WM Mueller Trenching and Excavating
(636) 980-7757St. Charles
InstallerLicence expires May 31, 2028
X-L Contracting
(314) 280-1248Saint Peters
InstallerLicence expires October 31, 2026

Licensed septic companies in St. Charles County
Company	Licensed for	Phone	Licence expires
7 Oaks Home InspectionsWarren	Soil evaluator	(636) 456-0001	November 30, 2026
A & M Septic and ExcavatingForistell	Installer	(636) 262-9100	August 31, 2026
A & S Septic and Utilities LLCNew Melle	Installer	(636) 398-6176	March 31, 2028
A R C Grading, LLCMoscow Mills	Installer	(636) 290-5419	November 30, 2025
A.R.C. Grading LLCMoscow Mills	Installer	(636) 299-3659	January 31, 2026
ABBCO Plumbing & Drain LLCSt. Charles	Installer	(636) 250-3221	December 31, 2026
Accurate Septic & Well InspectionsSt. Clair	Installer	(636) 358-7797	September 30, 2028
Accurate Septic & Well InspectionsSt Charles	Soil evaluator	(636) 262-1303	August 31, 2028
Accuro Services,LLCWentzville	Installer	(314) 363-4793	December 31, 2027
Advanced Septic & TrenchingOld Monroe	Installer	(636) 248-7879	January 31, 2026
All American SepticWentzville	Installer	(636) 970-9192	March 31, 2026
Authority Plumbing and DrainWarrenton	Installer	(314) 220-6519	May 31, 2027
B Green Plumbing & Drain Cleaning LLCWarrenton	Installer	(314) 604-5000	June 30, 2026
B&J SepticSilex	Installer	(573) 384-5536	March 31, 2027
Backhoe Services UnlimitedVilla Ridge	Installer	(636) 234-4790	March 31, 2027
Ballmann EarthworksAugusta	Installer	(636) 236-4242	March 31, 2028
Bauche Contracting LLCWashington	Installer	(636) 369-1474	April 30, 2027
BDG Contracting IncSt. Louis	Installer	(314) 478-2388	January 31, 2028
Benchmark Excavating LLCForistell	Installer	(636) 734-5198	July 31, 2026
Benjamin G. WoodruffCamdenton	Installer	(636) 734-1668	March 31, 2026
Bi-State Utilities Co.St. Charles	Installer	(314) 209-0202	August 31, 2028
Big D Pipe LLCSt Charles	Installer	(636) 399-7495	May 31, 2028
Bill Martin Construction LLCEureka	Installer	(636) 271-2653	May 31, 2026
Blackwood PlumbingWarrenton	Installer	(636) 359-5622	May 31, 2027
Bloomsdale Excavating Company, IncBloomsdale	Installer	(573) 483-2564	August 31, 2026
BPG InspectionsSt. Louis	Soil evaluator	(800) 285-3001	September 30, 2028
Brenda K. RushDittmer	Soil evaluator	(636) 296-1211	April 30, 2027
Brian UnnerstallVilla Ridge	Installer	(636) 660-0860	August 31, 2026
Brighthouse PlumbingFenton	Installer	(636) 600-0188	January 31, 2027
Bruce Tucker & Sons Septic LLCSilex	Installer	(636) 295-7769	May 31, 2028
Bylo Brothers IncWright City	Installer	(636) 486-5180	May 31, 2027
C & H Plumbing CompanySt Louis	Installer	(314) 494-8042	May 31, 2026
C.Taylor Contracting LLCHermann	Installer	(636) 584-9077	March 31, 2028
Carter BackhoeWentzville	Installer	(636) 980-6115	January 31, 2026
Cavaness ContractingImperial	Installer	(314) 972-2383	January 31, 2027
Chapman ContractingSt. Clair	Soil evaluator	(636) 629-7854	March 31, 2027
Chartette Creek Excavating LLCMarthasville	Installer	(636) 390-3811	December 31, 2027
clubbs home remodelingofallon	Installer	(636) 228-3422	October 31, 2026
CMK Land ManagementUnion	Installer	(636) 303-9831	October 31, 2026
Commercial Drain & Sewer Cleaning IncArnold	Installer	(636) 282-1775	February 28, 2028
Courtney Construction LLCMountain Grove	Installer	(417) 926-1479	January 31, 2027
Creason Contracting LLCTroy	Installer	(636) 528-3609	April 30, 2026
CSO Environmental Services, IncSpringfield	Installer	(217) 522-4085	March 31, 2027
Dalton Cain	Installer	(636) 278-0188	December 31, 2026
DC Septic & DrainTroy	Installer	(636) 290-6382	January 31, 2027
Dempsey Investment LLCJonesburg	Installer	(636) 235-8181	May 31, 2028
DJM Ecological Services Inc.St. Louis	Installer	(314) 478-2388	January 31, 2028
Dobsch Construction LLCWashington	Installer	(314) 520-6282	May 31, 2027
Dotson & Gibbs IncNew London	Installer	(573) 985-3700	April 30, 2028
Earthworx Excavating & Bobcat Services, IncVilla Ridge	Installer	(314) 574-6305	June 30, 2026
Ed Bellm Plumbing CoSt. Louis	Installer	(314) 383-1436	May 31, 2026
Erbe Construction LLCSilex	InstallerSoil evaluator	(636) 697-7787	December 31, 2026
Fischer Excavating LLCTruxton	Installer	(636) 237-3370	February 29, 2028
Fleer ExcavatingHermann	Installer	(636) 900-1772	July 31, 2028
Flowmasters Plumbing LLCOverland	Installer	(314) 733-0334	August 31, 2026
Flynn Drilling CoTroy	Installer	(636) 528-6137	November 30, 2025
Four Seasons Ground MaintenanceWentzville	Installer	(314) 872-0034	September 30, 2026
Gaines Soil ConsultingWorden	Soil evaluator	(636) 947-1221	March 31, 2026
Garrett Concrete & Const. IncWright City	Installer	(636) 384-6139	July 31, 2028
Garrett Concrete & Constr Inc.Wright City	Soil evaluator	(636) 384-6139	August 31, 2028
Gerling Excavating & ConstBerger	Installer	(636) 357-8182	May 31, 2026
Girdner Contracting LLCVilla Ridge	Installer	(636) 266-8788	May 31, 2026
Grease MastersSt. Charles	Installer	(636) 916-3115	November 30, 2026
Greater Missouri Homes LLCAugusta	Installer	(636) 667-2461	May 31, 2026
H.S. Plumbing LLCTroy	Installer	(314) 503-3416	June 30, 2026
Harwood Environmental ServicesSt. Louis	Soil evaluator	(314) 695-2364	March 31, 2026
Home & Farm Soil ConsultingNew Haven	Soil evaluator	(573) 237-5081	October 31, 2025
Ice Services LLCWarner Robins	Installer	(636) 841-8688	January 31, 2028
Integrated Facility ServicesFenton	Installer	(314) 208-1760	August 31, 2028
Integrity Septic and Sewer LLCPacific	Installer	(314) 280-6097	May 31, 2028
Intelligent Plumbing SolutionsNew Melle	Installer	(314) 956-4977	March 31, 2028
JCTB InspectionsEolia	Soil evaluator	(636) 293-3710	July 31, 2028
Jeff Roderfeld Const. LLCSt. Charles	Installer	(636) 459-1706	July 30, 2028
Jemm Excavating IncSt. Charles	Installer	(636) 262-6561	October 31, 2028
Jesse Kleinheider Contracting LLCWashington	Installer	(636) 667-2878	February 28, 2026
Jody Schmidt Well & Sewer ServiceNew Melle	Installer	(636) 262-1054	January 31, 2026
JTLSt. Charles	Installer	(314) 831-3954	July 31, 2027
K&P Services LLCBlue Springs	Installer	(816) 854-9091	August 31, 2028
KC Land & LawnWarrenton	Installer	(636) 359-5126	August 31, 2028
Kelpe Contracting IncWildwood	Installer	(636) 458-1400	January 31, 2026
Klemme's Backhoe ServiceWentzville	Installer	(636) 398-6142	March 31, 2026
Kolb Grading LLCSt. Charles	Installer	(314) 524-7223	January 31, 2026
Leeker Construction CoSt. Louis	InstallerSoil evaluator	(314) 355-0078	June 30, 2027
Lewis Plumbing llc.Hillsboro	Installer	(636) 524-3500	July 31, 2028
LHS Hauling & GradingWarrenton	Installer	(636) 297-7063	April 30, 2027
M Turpin Services LLCWright City	Installer	(636) 262-6230	February 28, 2026
MACC Construction LLCForistell	Installer	(636) 262-4262	September 30, 2026
MC Plumbing & Excavating LLCLabadie	Installer	(636) 393-9382	September 30, 2026
Merlo Plumbing, Co., IncSt. Louis	Installer	(314) 843-1000	August 31, 2026
Meyerott Enterprises, LLCSt. Charles	Installer	(636) 485-1215	May 31, 2028
Mick Mehler and Sons, IncSilex	Installer	(573) 384-5978	May 31, 2027
Mick's Mehler & Sons, IncSilex	Installer	(573) 384-5978	December 31, 2025
Mike Henry Excavating, LLCSilex	Installer	(636) 775-0811	June 30, 2028
Mike's Septic & Dirtwork LLCFoley	Installer	(636) 295-0465	May 31, 2028
Missouri Property InspectionsCottleville	Soil evaluator	(636) 528-1554	August 31, 2027
Modern Pumping and Sewer Services LLCO'Fallon	Installer	(314) 662-5179	September 30, 2028
Mots Excavation LLCHillsboro	Installer	(314) 974-5756	November 30, 2028
Mr Rooter stlFenton	Installer	(314) 656-7277	January 31, 2028
Mr. RooterFenton	Installer	(314) 665-2157	May 31, 2028
Murphy Company Mechanical Contractors and EngineerSt. Louis	Installer	(314) 997-6600	December 31, 2026
NewShu Contracting LLCLonedell	Installer	(314) 578-0145	January 31, 2028
No Limits Excavating LLCVilla Ridge	Installer	(314) 280-2868	May 31, 2027
O'Brien Construction & ExcavationElsberry	Installer	(573) 898-5539	April 30, 2028
O'Fallon Sewer ServiceO'Fallon	Installer	(636) 281-2200	April 30, 2026
O"Fallon Sewer ServiceO'Fallon	Installer	(636) 281-2200	December 31, 2026
Olmsted ContractingAlton	Installer	(618) 977-6543	July 31, 2027
On-Site SoilsChesterfield	Soil evaluator	(888) 878-1461	June 30, 2026
On-Site SoilsChesterfield	Soil evaluator	(314) 341-3888	March 31, 2026
Orf Construction IncBowling Green	Installer	(573) 324-3552	March 31, 2026
Orf Construction IncBowling Green	Installer	(573) 324-3552	May 31, 2028
Parker Petroleum Sales & ServiceTroy	Installer	(314) 401-5447	February 28, 2027
Poeling ConstructionForistell	Installer	(636) 463-2437	April 30, 2026
Pro-Com Septic & Excavation LLCValles Mines	Installer	(636) 222-8128	March 31, 2028
Protect Home InspectionsWashington	Soil evaluator	(314) 937-6909	April 30, 2028
Pruessner Contracting LLCNew Haven	Installer	(636) 900-2728	February 28, 2026
Rhyno Septic LLCTroy	Installer	(314) 280-7929	March 31, 2028
Rich Gullet & SonsPacific	Installer	(636) 271-2327	April 30, 2028
RT ConstructionRocky Mount	Installer	(573) 240-4049	September 11, 2027
Rust Construction LLCInnsbrook	Installer	(636) 745-3426	April 30, 2026
S&S Utility contractingOfallon	Installer	(314) 220-5611	January 31, 2026
Sam's Home & Commercial InspectorsVichy	Installer	(573) 202-6062	August 31, 2028
Samuel Heating and CoolingSt. Louis	Installer	(314) 398-2323	November 30, 2025
Samuel Plumbing & Drain LayingSt. Louis	Soil evaluator	(314) 398-2323	August 31, 2026
Second Nature Excavation and HardscapesNew Haven	Installer	(573) 694-8696	March 31, 2028
Select sewer InspectionsFlorissant	Soil evaluator	(636) 214-9079	November 30, 2026
Semke Grading and PipeSaint Charles	Installer	(636) 250-4225	May 31, 2028
Septic Services, Inc.Union	Installer	(636) 583-5564	January 31, 2026
Septic SolutionsHouse Springs	Installer	(314) 216-1937	September 30, 2028
Shay Noa Construction LLCLake Saint Louis	Installer	(636) 219-1560	April 30, 2027
Show Me SoilsLonedell	InstallerSoil evaluator	(636) 629-1788	April 30, 2026
Southern Ditching & Excavating CoO'Fallon	Installer	(636) 441-1112	May 31, 2026
STL Sewer Cams LLCBarnhart	Installer	(314) 675-0605	May 31, 2026
Superier Heating & CoolingLake St. Louis	Installer	(636) 926-0000	January 31, 2026
Superior Sewer CoSt. Louis	Installer	(314) 931-4738	July 31, 2026
Superior Sewer CompanySt. Louis	Soil evaluator	(314) 437-0522	February 28, 2026
Sween CoWentzville	Installer	(636) 699-6882	October 31, 2026
T.G. Rankin Company, Inc.Chesterfield	Soil evaluator	(636) 532-4555	July 31, 2028
Trinity Ditching LLCTroy	Installer	(636) 462-2084	May 31, 2026
Turnbull Contracting, LLCBowling Green	Installer	(573) 324-6922	March 31, 2028
United Property Services	Installer	(636) 358-8575	September 30, 2026
Unnerstall Contracting Co., LtdPacific	Installer	(636) 257-3003	February 28, 2026
Volz IncorporatedSaint Louis	Installer	(314) 890-1264	December 31, 2026
Wehmeyer FarmMoscow Mills	Installer	(636) 368-8264	August 31, 2027
Wehmeyer Farms, Inc.Moscow Mills	Installer	(636) 368-8264	April 30, 2027
Wiggs Plumbing LLC	Installer	(314) 299-2216	September 30, 2026
William H. Bond EngineeringSte. Genevieve	InstallerSoil evaluator	(573) 483-2175	March 31, 2026
Wm G Cocos Co IncSt Louis	Installer	(314) 631-2688	August 31, 2026
WM Mueller Trenching and ExcavatingSt. Charles	Installer	(636) 980-7757	May 31, 2028
X-L ContractingSaint Peters	Installer	(314) 280-1248	October 31, 2026

Individually licensed onsite professionals in St. Charles County

Missouri licenses people as well as companies. These are the named professionals the state has licensed, listed with the licence they hold and when it expires. They are usually employed by one of the businesses above.

Licensed onsite professionals in St. Charles County
Name	Licence	City	Expires
Ashley Harrop	Onsite Soil EvaluatorNo. 51355	St. Louis	February 28, 2026
Ben Soloman	Basic InstallerNo. 39478	—	July 31, 2028
Christopher Bellm	Advanced InstallerNo. 31972	St. Louis	May 31, 2026
Christopher Lucke	Onsite Soil EvaluatorNo. 50859	Cottleville	August 31, 2027
Jeremy Senevey	Advanced InstallerNo. 34966	Silex	May 31, 2027
Julian Brady	Onsite Soil EvaluatorNo. 51303	Florissant	November 30, 2026
Matthew Ebinger	Basic InstallerNo. 38766	Barnhart	May 31, 2026
Nicholas Sweeney	Advanced InstallerNo. 38955	Wentzville	October 31, 2026
Samuel Ebegbodi	Onsite Soil EvaluatorNo. 51212	St. Louis	August 31, 2026
Scott Hall	Basic InstallerNo. 34967	Silex	May 31, 2027
Stephen Benskin	Basic InstallerNo. 37440	St. Charles	July 31, 2027
Tyler Aynes	Onsite Soil EvaluatorNo. 51298	Washington	April 30, 2028
Tyler Moor	Basic InstallerNo. 37378	Lake Saint Louis	April 30, 2027

Who handles septic permits in St. Charles County

Missouri registers the individual installer and records the counties they serve. Your local health authority permits the system itself, and in some counties runs its own additional requirements on top.

How to verify a septic licence before you hire →

Towns in St. Charles County

Where in the county each licensed business is based.

Licensed companies in neighbouring counties

A Missouri septic licence is valid statewide, so a company listed in an adjoining county can legally do the work in St. Charles County.

Records as published August 26, 2026. A licence can lapse at any time — confirm with Missouri DHSS, or the state's own published registration data before hiring. Report a correction.