| Name | Stand/Booth |
|---|---|
| AbTech Industries, Inc. | 617 |
| Advanced Drainage Systems, Inc. | 610 |
| American Academy of Sanitarians | 704 |
| American Public University | 507 |
| Anua | 517 |
| Association for Environmental Health Academic Programs (AEHAP) | 506 |
| Association of Professional Piercers | 310 |
| Bio-Microbics, Inc. | 714 |
| California Conference of Directors of Environmental Health (CCDEH) | 316 |
| California Environmental Health Association 2013 AES | 505 |
| California Onsite Wastewater Association | 614 |
| Cambro | 204 |
| CDC NCEH/ATSDR | 105 |
| CDC/NCEH Booth 2 | 107 |
| CDP, Inc. | 301 |
| Chicopee | 700 |
| Clarke | 303 |
| Columbia Southern University | 407 |
| Cooper-Atkins Corporation | 405 |
| Decade Software Company | 213 |