| Company | Location | Certifications | License # |
|---|---|---|---|
| Barnhill'S Services Inc | Lexington, SC | Installer (Tier 2) | 32-367-32092 |
| Barnhill'S Services Inc | Lexington, SC | Pumper | 32-368-32026 |
| Bishops Land Service | Swansea, SC | Installer (Tier 1) | OSWWI0693 |
| Black Label Group | Lexington, SC | Installer (Tier 2) | OSWWI0734 |
| Brad Mack Construction Llc | Swansea, SC | Installer (Tier 2) | 32-367-32080 |
| Brett Reeder Const Co Inc | Gilbert, SC | Installer (Tier 2) | 32-367-32076 |
| C.E. Taylor & Son Inc | Lexington, SC | Installer (Tier 2) | OSWWI0209 |
| C.E. Taylor & Son Inc | Lexington, SC | Pumper | OSWWP0055 |
| Carolina Tap & Bore Inc | West Columbia, SC | Installer (Tier 2) | 32-367-32049 |
| Christopher Mcmillan | West Columbia, SC | Installer (Tier 2) | OSWWI0198 |
| Complete Septic Tank | Pelion, SC | Pumper | 32-368-32027 |
| Complete Septic Tank And Well Repair | Pelion, SC | Installer (Tier 2) | OSWWI0609 |
| Complete Well Drilling &Septic | Pelion, SC | Installer (Tier 2) | 32-367-32093 |
| Cornerstone General Contractor | Lexington, SC | Installer (Tier 2) | 32-367-32066 |
| D R Jones Heavy Const Inc | West Columbia, SC | Installer (Tier 2) | 32-367-32077 |
| Dba Cynthia Pryor | Lexington, SC | Installer (Tier 2) | OSWWI0817 |
| Derrick Plumbing Inc | Leesville, SC | Installer (Tier 2) | 32-367-32002 |
| Ethen Del Priore | Chapin, SC | Installer (Tier 2) | 32-367-32100 |
| Forest & Wildlife Innovations | West Columbia, SC | Installer (Tier 2) | 32-367-32089 |
| G H Smith Construction | Columbia, SC | Installer (Tier 2) | 32-367-32022 |
| Grace Wins Land Services Llc | Little Mountain, SC | Installer (Tier 2) | OSWWI0564 |
| Handyman Bobs Llc | Columbia, SC | Installer (Tier 2) | OSWWI0651 |
| Hendrix Builders Inc | Lexington, SC | Installer (Tier 2) | 32-367-32069 |
| Holmes Timber Co | Batesburg, SC | Installer (Tier 2) | 41-367-41020 |
| Jackson Septic And Clearing | West Columbia, SC | Installer (Tier 2) | 32-367-32097 |
| Karson Grubbs | West Columbia, SC | Installer (Tier 2) | OSWWI0479 |
| Knight Septic Service Llc | West Columbia, SC | Pumper | OSWWP0048 |
| Kw Environmental Llc | Lexington, SC | Pumper | 32-368-32025 |
| Kw Restaurant Services, Llc | Lexington, SC | Pumper | OSWWP0151 |
| Lucas Septic Tank & Utilities Inc | Gaston, SC | Installer (Tier 2) | OSWWI0622 |
| Lucas Septic Tank & Utilities Inc | Gaston, SC | Pumper | 32-368-32024 |
| M & E Septic Service | Chapin, SC | Installer (Tier 2) | 40-367-40063 |
| M & E Septic Service | Chapin, SC | Pumper | 40-368-40036 |
| P & S Construction Co Inc | Lexington, SC | Pumper | 32-368-32012 |
| Palmetto Septic Solutions Llc | West Columbia, SC | Installer (Tier 2) | OSWWI0824 |
| Palmetto Septic Solutions Llc | West Columbia, SC | Pumper | OSWWP0155 |
| Peevey Inc | West Columbia, SC | Installer (Tier 2) | OSWWI0208 |
| Peevey Inc Dba Weco Rooter | West Columbia, SC | Pumper | OSWWP0068 |
| Pld Outdoors, Llc | Lexington, SC | Installer (Tier 2) | OSWWI0688 |
| Poston Builders | West Cola, SC | Installer (Tier 2) | OSWWI0510 |
| Russell D Rawl | Gilbert, SC | Installer (Tier 2) | 32-367-32050 |
| Russell D. Rawl Inc. | Gilbert, SC | Installer (Tier 2) | OSWWI0501 |
| Sca Underground, Llc | Lexington, SC | Pumper | OSWWP0101 |
| Sharpe'S Septic Tank & Well Drilling Service Llc | Gaston, SC | Installer (Tier 2) | OSWWI0343 |
| Sharpe'S Septic Tank & Well Drilling Service Llc | Gaston, SC | Pumper | OSWWP0162 |
| Sharpes Septic Tank & Well Dri | Gaston, SC | Installer (Tier 2) | 32-367-32102 |
| Sharpes Septic Tank & Well Drilling | Gaston, SC | Pumper | 32-368-32032 |
| Sharpes Septic Tank & Well Drilling | Gaston, SC | Pumper | 32-368-32033 |
| Somebody Septic And Drain, Llc | Cayce, SC | Pumper | OSWWP0160 |
| Southland Environmental Solutions Llc | Gilbert, SC | Installer (Tier 2) | OSWWI0785 |
| Southland Environmental Solutions Llc | Gilbert, SC | Pumper | OSWWP0166 |
| Spicer On-Call Services, Llc | Gilbert, SC | Installer (Tier 2) | OSWWI0565 |
| The Ricechild Group, Llc | West Columbia, SC | Installer (Tier 2) | 32-367-32095 |
| Water Systems Inc Of W Columbi | Lexington, SC | Pumper | 32-368-32030 |
| Weco Rooter | West Columbia, SC | Installer (Tier 2) | OSWWI0633 |
| Weco Rooter | Lexington, SC | Installer (Tier 2) | OSWWI0636 |
| Woolpert | Columbia, SC | Pumper | OSWWP0020 |
57 companies in the SCDES on-site wastewater (OSWW) contractor registry are based in Lexington County as of 2026-07-23. Companies based elsewhere in South Carolina also commonly serve the county.
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