| Company | Location | Certifications | License # |
|---|---|---|---|
| Absolute Septic | Clayton, NC | Installer (Level II) | 9043 |
| Adams Soil Consulting | Middlesex, NC | Inspector | 11596I |
| Advanced Quality Inspections | Clayton, NC | Inspector | 11405I |
| Agustin Avila Construction | Clayton, NC | Installer (Level II) | 9428 |
| Alonso'S Construction Company Llc | Smithfield, NC | Installer (Level II) | 14963 |
| Alpha Contracting Llc | Garner, NC | Installer (Level IV) | 11710 |
| Alpha Plumbing & Services Llc | Four Oaks, NC | Installer (Level II) | 9637 |
| American Environmental & Excavation | Clayton, NC | Installer (Level II) | 11142 |
| Asc Constructin Llc | Four Oaks, NC | Installer (Level II) | 11998 |
| Ashley Langdon | Angier, NC | Installer (Level II) | 11977 |
| Avila Construction Llc | Smithfield, NC | Installer (Level II) | 1917 |
| Batten'S Backhoe Service Inc | Princeton, NC | Installer (Level IV) | 2682 |
| Bemco | Benson, NC | Installer (Level IV) | 7147 |
| Ben'S Plumbing & Septic Inc | Wendell, NC | Installer (Level IV)Inspector | 6495 |
| Biggs Septic & Sewer Services | Garner, NC | Installer (Level II) | 11662 |
| Biggs Septic & Sewer Services | Garner, NC | Installer (Level II) | 11655 |
| Boswells Lawn Service | Four Oaks, NC | Installer (Level II) | 15090 |
| Bryan Lopez Cazarin | Benson, NC | Installer (Level II) | 14654 |
| C C Norris Enterprises | Benson, NC | Installer (Level IV) | 11631 |
| Capitol City Clearing | Clayton, NC | Installer (Level II) | 15207 |
| Capps Plumbing | Four Oaks, NC | Installer (Level II) | 14953 |
| Capps Plumbing Company Inc | Four Oaks, NC | Installer (Level II) | 14741 |
| Carroll Construction Homes | Willow Spring, NC | Installer (Level IV)Inspector | 5374 |
| Charles Hardee Grading Co | Benson, NC | Installer (Level II) | 3623 |
| Chosen Home Inspections Inc | Raleigh, NC | Inspector | 11865I |
| Ckb Site Solutions Llc | Dunn, NC | Installer (Level II) | 15072 |
| Coty Lewis | Four Oaks, NC | Installer (Level II) | 14652 |
| Cox Hauling & Grading Llc | Four Oaks, NC | Installer (Level IV) | 11860 |
| Daniel J Bliley Soil & Land Use Consult | Smithfield, NC | Designer (Soil Evaluator) | 10041E |
| Dba Abel Septic Tank Cleaning | Smithfield, NC | Installer (Level II)Inspector | 7012 |
| Dell Adams | Benson, NC | Installer (Level IV)Inspector | 3855 |
| Diamantes Construction Llc | Clayton, NC | Installer (Level II) | 11252 |
| Dos Bros Septic Service | Middlesex, NC | Installer (Level II) | 14408 |
| E & J Residential Llc | Newton Grove, NC | Installer (Level II) | 9379 |
| E & J Residential Llc | Newton Grove, NC | Installer (Level II) | 9380 |
| Eberhart Construction Inc | Selma, NC | Installer (Level IV) | 2463 |
| Ebg Inc | Four Oaks, NC | Installer (Level II) | 5907 |
| Environmental Systems & Services Of Nc | Clayton, NC | Installer (Level IV)Inspector | 4867 |
| Frank Howard Backhoe | Clayton, NC | Installer (Level IV)Inspector | 5077 |
| Fred'S Company Llc | Smithfield, NC | Installer (Level II) | 14892 |
| Freedom Earthworkz & Hauling Llc | Selma, NC | Installer (Level II) | 9844 |
| Full Circle Environmental Services Llc | Garner, NC | Inspector | 9331I |
| Full Circle Environmental Services Llc | Garner, NC | Installer (Level IV) | 6095 |
| G & H Backhoe | Smithfield, NC | Installer (Level IV)Inspector | 2763 |
| G And G Consultants Llc | Clayton, NC | Installer (Level II) | 11254 |
| G S Bareford Specialty Services | Middlesex, NC | Installer (Level IV)Inspector | 2452 |
| Gene'S Backhoe Service | Willow Spring, NC | Installer (Level IV)Inspector | 3795 |
| Gilcon Llc | Benson, NC | Installer (Level IV)Inspector | 4939 |
| Golden Properties & Development | Willow Spring, NC | Installer (Level IV)Inspector | 5373 |
| Golden Properties And Development | Willow Spring, NC | Installer (Level IV)Inspector | 5372 |
| Grier Construction Company Llc | Clayton, NC | Installer (Level II) | 13068 |
| Grunt Septic Inspection | Middlesex, NC | Installer (Level II)Inspector | 9250 |
| Hardee'S Septic Tank Ser | Willow Spring, NC | Inspector | 4687I |
| Hardee'S Septic Tank Service | Willow Spring, NC | Inspector | 1087I |
| Herring Company | Benson, NC | Installer (Level II) | 6242 |
| J & J Septic Services Corporation | Benson, NC | Inspector | 9324I |
| J & J Septic Services Corporation | Benson, NC | Installer (Level II) | 11843 |
| James Godwin | Benson, NC | Installer (Level II) | 15233 |
| Jason Wayne Godwin | Kenly, NC | Inspector | 7036I |
| Jim'S Septic Solutions Llc | Clayton, NC | Installer (Level II)Inspector | 7276 |
| Johnson Farms | Clayton, NC | Installer (Level II) | 4340 |
| Joshua Lee | Selma, NC | Installer (Level II) | 15462 |
| Jsk Contracting Inc | Benson, NC | Installer (Level II) | 14659 |
| Kw Boykin Plumbing Inc | Garner, NC | Installer (Level II) | 11001 |
| L I Johnson Inc | Four Oaks, NC | Installer (Level IV) | 1222 |
| L I Johnson Plumbing & Backhoe | Four Oaks, NC | Installer (Level IV) | 6440 |
| Larry Johnson | Benson, NC | Installer (Level II) | 5644 |
| Larry Wayne Oliver | Selma, NC | Installer (Level IV) | 4378 |
| Lynda Weeks Trucking | Benson, NC | Installer (Level II) | 5908 |
| Mahoney Farms | Princeton, NC | Installer (Level II) | 11393 |
| Maintenance Enterprises | Kenly, NC | Installer (Level II) | 11824 |
| Maple Creek Properties Llc | Garner, NC | Installer (Level II) | 11973 |
| Metanoia Contracting Llc | Middlesex, NC | Installer (Level II) | 11965 |
| Mills Septic Solutions | Kenly, NC | Inspector | 6288I |
| Mw Contracting And Grading | Benson, NC | Installer (Level IV)Inspector | 2482 |
| Mxv Enterprises | Princeton, NC | Installer (Level II) | 6946 |
| Narron Contracting Inc | Middlesex, NC | Installer (Level II) | 11782 |
| Neuse River Septic Llc | Clayton, NC | Inspector | 13047I |
| New Leaf Inspections | Smithfield, NC | Inspector | 13034I |
| Overshot Properties Solutions Llc | Benson, NC | Installer (Level II) | 15275 |
| Pac-One Pllc | Selma, NC | Designer (Soil Evaluator) | 10012E |
| Proven Professional Construction Service | Garner, NC | Installer (Level IV)Inspector | 11508 |
| Proven Professional Construction Service | Garner, NC | Installer (Level IV)Inspector | 11509 |
| Ramm Backhoe Service | Middlesex, NC | Installer (Level IV)Inspector | 1238 |
| Rdz Utilities Llc | Selma, NC | Installer (Level II) | 15395 |
| Red Truck Contracting Llc | Garner, NC | Installer (Level IV) | 6670 |
| Rodney Earl Geohagan Jr | Lagrange, NC | Installer (Level II) | 6680 |
| Rzany Home Inspections Llc | Clayton, NC | Inspector | 9488I |
| Sarah M Smale | Angier, NC | Installer (Level II)Inspector | 14710 |
| Scott'S Customs Llc | Clayton, NC | Installer (Level II) | 5774 |
| Scotts Customs Llc | Clayton, NC | Installer (Level II) | 15350 |
| Seabound Septic & Waste Management | Benson, NC | Installer (Level II)Inspector | 14061 |
| Seabound Septic & Waste Management | Benson, NC | Installer (Level II)Inspector | 14062 |
| Sergio Franco Robles | Smithfield, NC | Installer (Level II) | 9799 |
| Silver Point Construction Llc | Benson, NC | Installer (Level II) | 15448 |
| Sinclair Septic 7 Utility Llc | Dunn, NC | Installer (Level II) | 11831 |
| Smale Septic Llc | Willow Spring, NC | Installer (Level II)Inspector | 5976 |
| Stallings Septic Service | Garner, NC | Installer (Level IV)Inspector | 5156 |
| State Mobile Home Movers | Dunn, NC | Installer (Level IV)Inspector | 4813 |
| Steve Nordan Septic | Angier, NC | Installer (Level IV)Inspector | 9390 |
| Stuckey'S Backhoe Service Inc | Princeton, NC | Installer (Level IV)Inspector | 5670 |
| Supreme Pools Of Eastern Nc | Kenly, NC | Installer (Level II) | 11812 |
| T & C Construction Group Llc | Clayton, NC | Installer (Level II) | 14837 |
| T & S Denning Farms & Construction | Benson, NC | Installer (Level II) | 2459 |
| Thornton'S Footings Hauling & Septic Inc | Clayton, NC | Installer (Level II) | 6682 |
| Thornton'S Plumbing | Clayton, NC | Installer (Level II) | 2534 |
| Top 2 Bottom Inspections Inc | Clayton, NC | Inspector | 4117I |
| Uniquescapes Inc | Benson, NC | Installer (Level II) | 14757 |
| William Ashley Rains | Kenly, NC | Installer (Level IV)Inspector | 5650 |
| William Brayden Rains | Kenly, NC | Installer (Level IV) | 9290 |
110 companies in the NCOWCICB certified onsite wastewater contractor & inspector lists are based in Johnston County as of 2026-07-23. Companies based elsewhere in North Carolina also commonly serve the county.
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