| Business | Phone |
| Arcadis Geraghty & Miller Inc 6 Terry Dr, Newtown 18940 | (267) 685-1800 |
| Brown Environmental Svc Corp 301 S State St # N102, Newtown 18940 | (215) 504-5066 |
| Environmental Management Svc 120 E Hanover St, Newtown 18940 | (215) 968-4620 |
| Envirospect 117 Parkview Way, Newtown 18940 | (215) 968-3181 |
| Rees Scientific Corp Newtown 18940 | (215) 860-2348 |
| Radon Testing Systems Po Box 243, Newtown 18940 | (215) 968-1933 |
| Pennjersey Environmental 2034 E Wellington Rd, Newtown 18940 | (215) 860-1231 |
| Nova Consultants Ltd 251 Burgundy Ln, Newtown 18940 | (215) 860-7069 |
| Omega Environmental Management Newtown 18940 | (215) 860-3200 |