| National | State | Local |
| Environmental Protection Agency (EPA) | EPA in Indiana | City of Carmel Going Green |
| Greenpeace | Indiana Dept of Environmental Mgmt | City of Carmel Trash and Recycling Program |
| Earth 911 | Hoosier Environmental Council | Carmel Access Bikeways (CAB) |
| Earth Day Network | Environmental Law & Policy Center | Local Harvest Carmel |
| Environmental Defense Fund | Sierra Club Hoosier Chapter | Indy Go Commuter Express |
| Earth Hour | | Hamilton Co Health & Environment |
