| Environmental Health Simulation | Robert Canales | 14 | Members of this group are interested in simulating various health-related phenomena | Join |
| Human Exposure Software Group | Neil Klepeis | 46 | Members of this group are involved with development of software related to human exposure research | Join |
| Project Contributors Group | Neil Klepeis | 12 | This group contains members who contribute research materials as part of a specific project | Request membership |
| Researchers Group | Neil Klepeis | 29 | Members of this group post general interest research topics | Request membership |
| Stanford Exposure Analysis Group | Neil Klepeis | 8 | Research group at Stanford University dedicated to measuring and modeling human exposure | Invite only |
| Tobacco Smoke Exposure Working Group | Neil Klepeis | 38 | This group's members are involved in monitoring secondhand tobacco smoke or in developing or testing monitoring methods, especially real-time methods | Join |
| Wood Smoke Group | Neil Klepeis | 25 | This group contains members who have an interest in wood smoke emissions | Join |
