| Business | Phone |
| Applied Environmental Resource Friendswood 77546 | (281) 996-6566 |
| Bionenvironmental Engineering 1414 S Friendswood Dr, Friendswood 77546 | (281) 648-2558 |
| Chem Environmental Svc Inc 605 Oak Dr, Friendswood 77546 | (281) 482-6581 |
| Entact 699 S Friendswood Dr # 101, Friendswood 77546 | (281) 996-9892 |
| Envirosource Training & Tech Po Box 708, Friendswood 77549 | (281) 992-3581 |
| Twist Inc 2002 1/2 S Friendswood Dr, Friendswood 77546 | (281) 482-3450 |