| Business | Phone |
| Hydro Qual Inc 1200 Macarthur Blvd, Mahwah 7430 | (201) 529-5151 |
| K-Associates Engineers & Cnslt 51 Heather Ln, Mahwah 7430 | (201) 529-5227 |
| Desktop Engineering Intl 1200 Macarthur Blvd, Mahwah 7430 | (201) 818-9700 |
| Mc Dougall Engineering Assoc 65 Ramapo Valley Rd # 14, Mahwah 7430 | (201) 529-5010 |