Registered Onsite Wastewater Treatment System (OWTS) Installers List

This list is not all inclusive; being listed on our website is optional. For those not listed or to determine if the installer is basic or advanced; request to see a copy of their ID card. You may also verify registration by contacting the Onsite Wastewater Program at (573) 751-6095.

Contact Us if you have questions about this list, or to update or correct an address.

Also, a listing of Suspended/Revoked Installers is available.

Displaying 851 - 875 of 1560
Name:
Mackey, Jennifer
Installer ID #:
38962
Installer Level:
Basic
Date of Expiration:
2027-01-31
Business:
Jennifer D. Mackey
City, State:
N/A
Business Phone:
417229-8242
Counties Served:
Barry, Christian, Dade, Greene, Jasper, Lawrence, Newton, Stone
Name:
Mackey Jr, Jerry
Installer ID #:
30578
Installer Level:
Advanced
Date of Expiration:
2028-10-31
Business:
Mackey Backhoe LLC
City, State:
Marshfield, MO
Business Phone:
(417)-838-4183
Counties Served:
Webster
Name:
Macomber, Shane
Installer ID #:
38567
Installer Level:
Basic
Date of Expiration:
2026-01-31
Business:
Aris Home Inspections
City, State:
Lebanon, MO
Business Phone:
(417) 533-1399
Counties Served:
Camden, Dallas, Laclede, Pulaski, Texas, Webster, Wright
Name:
Madderra, Hailey
Installer ID #:
38854
Installer Level:
Advanced
Date of Expiration:
2026-07-31
Business:
TJ Riley Contracting
City, State:
Bonne Terre, MO
Business Phone:
(573) 482-0032
Counties Served:
Bollinger, Cape Girardeau, Franklin, Iron, Jefferson, Madison, Perry, Ste. Genevieve, St. Francois, Washington, Wayne
Name:
Madonna, Bryon
Installer ID #:
37698
Installer Level:
Advanced
Date of Expiration:
2025-11-30
Business:
Madonna's Septic & Sewer Solutions
City, State:
Hillsboro, MO
Business Phone:
(314) 486-8241
Counties Served:
Jefferson, Ste. Genevieve, St. Francois
Name:
Mahin, Logan
Installer ID #:
39401
Installer Level:
Advanced
Date of Expiration:
2028-03-31
Business:
Sedalia Septic & Drain
City, State:
Green Ridge, MO
Business Phone:
(660)-221-5200
Counties Served:
Benton, Cooper, Henry, Johnson, Pettis, Saline
Name:
Mahoney, Robert
Installer ID #:
38278
Installer Level:
Basic
Date of Expiration:
2028-02-28
Business:
Commercial Drain & Sewer Cleaning Inc
City, State:
Arnold, MO
Business Phone:
(636)-282-1775
Counties Served:
Franklin, Jefferson, Perry, St. Charles, St. Louis (County), Ste. Genevieve, St. Francois, Washington
Name:
Mahoney, Robert
Installer ID #:
31079
Installer Level:
Advanced
Date of Expiration:
2028-08-31
Business:
Commercial Drain & Sewer Cleaning, Inc.
City, State:
Arnold, MO
Business Phone:
(636) 282-1775
Counties Served:
Franklin, Jefferson, St. Louis (County), Ste. Genevieve, St. Francois
Name:
Mahurin, Dannie
Installer ID #:
38360
Installer Level:
Basic
Date of Expiration:
2028-05-31
Business:
Mahurin Dozing
City, State:
Mountain Grove, MO
Business Phone:
(417)-259-3224
Counties Served:
Douglas, Ozark, Texas, Wright
Name:
Majors, Bill
Installer ID #:
38033
Installer Level:
Advanced
Date of Expiration:
2027-05-31
Business:
Bill Majors Construction
City, State:
Pleasant Hope, MO
Business Phone:
(417) 768-0422
Counties Served:
Cedar, Christian, Dade, Dallas, Greene, Polk, Stone
Name:
Manes, Robin
Installer ID #:
30394
Installer Level:
Basic
Date of Expiration:
2026-03-31
Business:
Rob's Backhoe
City, State:
Bolivar, MO
Business Phone:
(417) 326-6861
Counties Served:
Cedar, Dade, Hickory, Polk
Name:
Manes, Richard
Installer ID #:
38331
Installer Level:
Advanced
Date of Expiration:
2028-03-31
Business:
B&N Tree Services LLC/Excavating
City, State:
Dixon, MO
Business Phone:
(573) 528-7648
Counties Served:
Camden, Maries, Phelps, Pulaski
Name:
Mangum, Cameron
Installer ID #:
39497
Installer Level:
Advanced
Date of Expiration:
2028-08-31
Business:
N/A
City, State:
N/A
Business Phone:
(480)-202-3391
Counties Served:
Benton, Christian, Dallas, Greene, Laclede, Miller, Morgan, Stone, Webster
Name:
Manley, Justin
Installer ID #:
39018
Installer Level:
Basic
Date of Expiration:
2026-12-31
Business:
Murphy Company Mechanical Contractors and Engineer
City, State:
St. Louis, MO
Business Phone:
(314) 997-6600
Counties Served:
Jefferson, St. Charles, St. Louis (County), St Louiscity
Name:
Maples, Greg
Installer ID #:
36502
Installer Level:
Advanced
Date of Expiration:
2028-07-31
Business:
Lake Ozark Outdoors LLC
City, State:
Eldon, MO
Business Phone:
(573)-507-2264
Counties Served:
Camden, Miller, Morgan
Name:
March, Keith
Installer ID #:
33776
Installer Level:
Basic
Date of Expiration:
2026-08-31
Business:
Keith March Exacavting & Trucking LLC
City, State:
Macon, MO
Business Phone:
(660) 385-5304
Counties Served:
Adair, Audrain, Boone, Macon, Randolph
Name:
Marchesi, Jr, Frank
Installer ID #:
33719
Installer Level:
Advanced
Date of Expiration:
2028-08-31
Business:
Bi-State Utilities Co.
City, State:
St. Charles, MO
Business Phone:
(314)-209-0202
Counties Served:
Arnold, Jefferson, St. Charles, St. Louis (County), Warren
Name:
Mareschal, Daniel
Installer ID #:
39305
Installer Level:
Advanced
Date of Expiration:
2027-12-31
Business:
Accuro Services,LLC
City, State:
Wentzville, MO
Business Phone:
(314) 363-4793
Counties Served:
Adair, Audrain, Bollinger, Boone, Callaway, Chariton, Clark, Cooper, Crawford, Franklin, Gasconade, Howard, Jefferson, Knox, Lewis, Lincoln, Macon, Madison, Moniteau, Monroe, Montgomery, Perry, Pike, Randolph, Reynolds, Scotland, St. Charles, Ste. Genevieve, St. Francois, Warren, Washington, Wayne
Name:
Mark, Joshua
Installer ID #:
38761
Installer Level:
Advanced
Date of Expiration:
2026-05-31
Business:
M.F.H. Concrete & Excavating LLC
City, State:
Verona, MO
Business Phone:
(417) 536-3213
Counties Served:
Barry, Lawrence, McDonald, Newton, Stone
Name:
Markoffski, Creyton
Installer ID #:
39541
Installer Level:
Advanced
Date of Expiration:
2028-09-30
Business:
N/A
City, State:
Omaha, AR
Business Phone:
(417)-294-9855
Counties Served:
Barry, Stone, Taney
Name:
Marshall, Scott
Installer ID #:
32503
Installer Level:
Advanced
Date of Expiration:
2026-04-30
Business:
Marshall Construction
City, State:
Brumley, MO
Business Phone:
(417) 718-6793
Counties Served:
Camden, Christian, Greene, Miller, Morgan, Pettis, Webster
Name:
Martin, Bill
Installer ID #:
30985
Installer Level:
Advanced
Date of Expiration:
2026-05-31
Business:
Bill Martin Construction LLC
City, State:
Eureka, MO
Business Phone:
(636) 271-2653
Counties Served:
Franklin, Jefferson, St. Charles, St. Louis (County)
Name:
Martin, Matthew
Installer ID #:
34835
Installer Level:
Advanced
Date of Expiration:
2027-03-31
Business:
R & R Dirtworks
City, State:
Eureka Springs, AR
Business Phone:
(479) 253-3124
Counties Served:
Barry, McDonald, Stone, Taney
Name:
Martin, Brett
Installer ID #:
37397
Installer Level:
Basic
Date of Expiration:
2027-04-30
Business:
Cedar Creek Dirt Works llc
City, State:
Ashland, MO
Business Phone:
(573) 239-6778
Counties Served:
Boone, Callaway, Cole
Name:
Martin, Dennis
Installer ID #:
30215
Installer Level:
Basic
Date of Expiration:
2026-02-28
Business:
Martin Trenching & Backhoe
City, State:
Taylor, MO
Business Phone:
(573) 406-4404
Counties Served:
Lewis, Marion, Phelps