| Business | Phone |
| Westford Chemical Corp 98 Concord Rd, Westford 1886 | (978) 392-0689 |
| Westford Environmental News 3 Snow Dr, Westford 1886 | (978) 392-8885 |
| Amec Earth & Environmental 239 Littleton Rd # 1b, Westford 1886 | (978) 692-9090 |
| Ensr Intl 2 Technology Park Dr, Westford 1886 | (978) 589-3000 |
| Groundwater & Environmental 364 Littleton Rd # 4, Westford 1886 | (978) 392-0090 |