| Ausable Bayfield Conservation Authority, Exeter | South Huron |
| Barrie District Hunters and Anglers Conservation Club | Springwater |
| Credit Valley Conservation, Island Lake Conservation Area, Island Lake Conservation Area | Orangeville |
| Ducks Unlimited Canada, Barrie | Barrie |
| Ganaraska Region Conservation Authority, Clean Water-Healthy Land Stewardship Program, Port Hope - County Rd 28 | Port Hope (Municipality of) |
| Ganaraska Region Conservation Authority, Port Hope - County Rd 28, Ganaraska Region Conservation Authority - Administration | Port Hope (Municipality of) |
| Kawartha Conservation | Lindsay |
| Maitland Valley Conservation Authority, Middle Maitland Rejuvenation Committee, Wroxeter | Howick |
| Maitland Valley Conservation Authority, Wroxeter | Howick |
| Ministry of Natural Resources, District Office - Peterborough | Peterborough |
| Muskoka Watershed Council | Bracebridge |
| Ontario Water Centre (The) | Georgina |
| Ontario. Ministry of Natural Resources [Central East], Aurora District Office, Holland Marsh Provincial Wildlife Management Area | Bradford West Gwillimbury |
| Ontario. Ministry of Natural Resources [Central East], Bracebridge Field Office | Bracebridge |
| Ontario. Ministry of Natural Resources [Central East], Midhurst District Office, Midhurst (Huronia) District Office | Springwater |
| Ontario. Ministry of Natural Resources [Central East], Owen Sound, Owen Sound Field Office | Owen Sound |
| Ontario. Ministry of Natural Resources [Central East], Parry Sound District Office, Southern Region | Parry Sound |
| Ontario. Northern Development, Mines, Natural Resources and Forestry, Parry Sound District Office, Southern Region | Parry Sound |
| Otonabee Region Conservation Authority, Peterborough - Milroy Dr, Otonabee Region Conservation Authority - Administration | Peterborough |
| Saugeen Conservation | South Bruce |
| Upper Avon River Conservation Club | Perth East |