This list includes Registered Installers who have indicated they work in this county. The list also shows some other counties served. For more registered installers, you can return to the map and check for installers that work in other nearby counties.

Any installer on this list can install basic OWTS. Advanced OWTS installers are noted with ADV and can install advanced OWTS. The requirements for advanced OWTS installers are effective July 1, 2005. There may be additional requirements to work in some counties. Contact the county onsite sewage authority to confirm that an individual can install systems in the county.

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Missouri Registered OWTS Installers List

Advanced Status Last Name First Name MI Date of Expiration Business Address City State Zip Code Business Phone Counties Served

Alvis Randy L 9/30/2019 Fire and Ice Enterprises LC Rt. 2, Box 33 Revere MO 63465 (660) 754-1234 Clark, Lewis, Scotland, Marion, Ralls

Armstrong Mark D 9/30/2019 Armstrong Plumbing & Trenching 251 N. Martin Ave Kahoka MO 63445 (660) 727-2041 Clark, Scotland, Lewis, Knox

Bock Donald L 4/30/2019 Donald Bock 3525 Hwy M Maywood MO 63454 (573) 406-3126 Marion, Lewis
ADV. Dinwiddie Adam G 9/30/2020 A & C Excavating 13622 SawyerDr. New London MO 63459 (573) 795-6914 Marion, Pike, Monroe, Shelby Lewis Knox Audrain

Evans Eric S 3/31/2020 Double E Excavating 29000 Oak Avenue Maywood MO 63454 (573) 478-4485 Marion, Clark, Knox, Ralls, Lewis
ADV. Graupman Herschel J 3/31/2019 Graupman Construction Co. 8865 Highway 168 Palmyra MO 63461 (573) 221-0900 Marion, Ralls, Lewis, Monroe
ADV. Horst Harold
7/31/2020 Horst Plumbing 52155 State Highway Y Baring MO 63531 (660) 892-4582 Knox, Scotland, Adair, Lewis

Martin Dennis
2/28/2020 Martin Trenching & Backhoe 575 County Road 363 Taylor MO 63471 (573) 406-4404 Marion, Lewis

McFarland Timothy Clark 9/30/2019 Fire and Ice Enterprises LC RR 2 Box 33 Revere MO 63465 (660) 754-1234 Clark, Lewis, Scotland, Marion, Ralls

Miller Edwin M 9/30/2020 Miller Trenching & Excavating 57176 State HWY T Knox City MO 63446 (660) 342-0321 Knox Adair Lewis Scotland Macon

Oberholtzer Marlin N 2/28/2018 Oberholtzer Plumbing LLC 347 S. Ridge St. Memphis MO 63555 (660) 465-8900 Scotland, Clark, Knox, Schuyler, Lewis

Paul William A 4/30/2018 Paul's Trenching & Backhoe RR 3 Box 20C Kahoka MO 63445 (660) 342-3437 Clark, Lewis, Scotland, Knox
ADV. Stark Thomas E 10/31/2019 Tom Stark Construction 4324 Co Rd. 112 Maywood MO 63454 (573) 478-3522 Marion, Lewis
ADV. Sutter Richard E 8/31/2019 Sutter Trucking & Excavating, Inc. 5680 Highway 6 Taylor MO 63471 (573) 769-3194 Lewis, Ralls, Clark,Shelby, Marion
ADV. Wagy Harry (Dean) D 4/30/2018 Quality Concrete & Plumbing LLC 101 E Clow Ewing MO 63440 (573) 406-2279 Lewis, Marion, Ralls, Shelby


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