| Canadian Mental Health Association Grey Bruce, Mental Health and Addiction Services, Owen Sound - 509 9th Ave E, G&B House | Owen Sound |
| De Novo Treatment Centre | Huntsville |
| Greenestone Centre for Recovery | Muskoka Lakes Township |
| Lakeridge Health Oshawa, Pinewood Centre, Whitby - Cochrane St, Women's Residential Treatment Program, Pinewood Centre, Whitby - Cochrane St | Whitby |
| Pine River Institute | Shelburne |
| Renascent | Brooklin |
| Salvation Army (The), Hope Acres, Treatment Centre | Adjala-Tosorontio |
| Seven South Street Treatment Centre | Orillia |