| GreenUP, Peterborough - Aylmer St N, Administration | Peterborough |
| Grey Bruce Public Health | Owen Sound |
| Haliburton, Kawartha, Pine Ridge District Health Unit, Port Hope, Inspections | Port Hope (Municipality of) |
| Huron Perth Public Health, Clinton - London Rd, Safe Beach Water | Central Huron |
| Huron Perth Public Health, Clinton - London Rd, Safe Drinking Water | Central Huron |
| Ontario. Ministry of Environment, Conservation and Parks, Barrie Office | Barrie |
| Peterborough Public Health, Peterborough - King St, Safe Water | Peterborough |
| Public Health Ontario., Peterborough Laboratory | Peterborough |
| Ramara Township, Infrastructure, Brechin - 2297 Hwy 12 | Ramara |
| Wellington-Dufferin-Guelph Public Health, Orangeville, Public Health | Orangeville |
| Wellington-Dufferin-Guelph Public Health, Shelburne, Public Health | Shelburne |