| Bruce Trail Conservancy, Halton Hills Chapter, Toronto Bruce Trail Club | Halton Hills |
| Bruce Trail Conservancy, Iroquoia Bruce Trail Club | Burlington |
| Canada. Natural Resources Canada, Office of Energy Efficiency | Ottawa |
| CLEAResult Canada, Central East, Enbridge Home Winterproofing and IESO Energy Affordability Programs | Toronto |
| Conservation Halton, Green Space: Newcomer Youth Climate Forum | Burlington |
| Conservation Halton, Public Education/Outreach Programs | Burlington |
| Conservation Halton, Burlington - Mount Nemo Conservation Area, Conservation Land & Recreational Trails | Burlington |
| Conservation Halton, Campbellville - Mountsberg Conservation Area, Conservation Land & Recreational Trails | Milton |
| Conservation Halton, Milton - Area 8 Conservation Area, Conservation Land & Recreational Trails | Milton |
| Conservation Halton, Milton - Crawford Lake Conservation Area, Conservation Land & Recreational Trails | Milton |
| Conservation Halton, Milton - Hilton Falls Conservation Area, Conservation Land & Recreational Trails | Milton |
| Conservation Halton, Milton - Kelso Conservation Area / Glen Eden, Conservation Land & Recreational Trails | Milton |
| Conservation Halton, Milton - Rattlesnake Point Conservation Area, Conservation Land & Recreational Trails | Milton |
| Conservation Halton, Milton - Robert Edmondson Conservation Area, Conservation Land & Recreational Trails | Milton |
| Credit Valley Conservation Authority, Limehouse Conservation Area, Conservation Land & Recreational Trails | Halton Hills |
| Credit Valley Conservation Authority, Silver Creek Conservation Area, Conservation Land & Recreational Trails | Halton Hills |
| Field and Stream Rescue Team | Burlington |
| Friends of the Earth Canada | Ottawa |
| Halton Bluebird Club | Oakville |
| Halton North Peel Naturalist Club | Halton Hills |
| Halton. Public Works, Water & Environment | Oakville |
| Niagara Escarpment Commission | Georgetown |
| Oakville. Parks and Open Space, Lions Valley Park | Oakville |
| Ontario Farmland Trust | Guelph |
| Ontario. Ministry of Environment, Conservation and Parks, Peterborough - Mailing Address, Natural Resources Information and Support Centre | Peterborough |
| Prime Earth, Youth Empowerment & Environmental Conservation Organization | Burlington |
| Protecting Escarpment Rural Land | Burlington |
| Royal Botanical Gardens, Laking Garden, Christmas Tree Drop-Off | Burlington |
| South Peel Naturalists' Club | Mississauga |
| Trans Canada Trail, National Office | Montréal |
| Trout Unlimited Canada, Environmental Improvement Group | Halton Region |
