| Business | Phone |
| Spectra Laboratories 2221 Ross Way, Tacoma 98421 | (253) 272-4850 |
| Severn Trent Labs Seattle 5755 8th St E, Tacoma 98424 | (253) 922-2310 |
| Columbia Inspection Inc 4901 20th St E, Tacoma 98424 | (253) 922-8781 |
| Nautilus Environmental 5009 Pacific Hwy E 2, Tacoma 98424 | (253) 922-4296 |