| Business | Phone |
| Enviropro Inc 9765 Eton Ave, Chatsworth 91311 | (818) 998-7197 |
| Optimal Technology Inc Po Box 4448, Chatsworth 91313 | (805) 969-2444 |
| Affordable Inspection Svc 21115 Devonshire St # 365, Chatsworth 91311 | (818) 886-2070 |
| Alpha Environmental 21220 Devonshire St, Chatsworth 91311 | (818) 772-4483 |
| E A Environmental 10100 Variel Ave, Chatsworth 91311 | (818) 718-6415 |
| Glenfos Inc 9620 Topanga Canyon Pl # F, Chatsworth 91311 | (949) 499-5898 |
| Hygiene Technologies 21032 Devonshire St # 213, Chatsworth 91311 | (818) 772-2800 |
| Trc Environmental Corp 9301 Oakdale Ave # 210, Chatsworth 91311 | (818) 772-0965 |