| Business | Phone |
| Enviro-Lab Inc 2043 Coteau Rd, Houma 70364 | (985) 876-5668 |
| Techweld Inc 1618 Coteau Rd, Houma 70364 | (985) 876-1243 |
| South La Testing & Inspection 129 Business Ct, Houma 70360 | (985) 872-3656 |
| Petroleum Laboratories Inc 109 Cleveland St, Houma 70363 | (985) 868-4820 |
| Delta Testing & Inspection Inc Houma 70360 | (985) 917-0311 |
| Nvillc 901 Oak St, Houma 70363 | (985) 876-5559 |