| ADAPT Halton, Concurrent Disorders Programs | Halton Region |
| Bartimaeus | Burlington |
| Canadian Mental Health Association, Halton Region Branch Head Office - Oakville, Mental Health Services | Oakville |
| Canadian Mental Health Association, Halton Region Branch - Milton Office, Mental Health Services | Milton |
| Centre for Addiction and Mental Health, Addiction Medicine Services and Specialized Clinics | Toronto |
| Halton Healthcare, Acton, North Halton Mental Health Clinic | Acton |
| Halton Healthcare, Georgetown, North Halton Mental Health Clinic | Georgetown |
| Halton Healthcare, Milton, North Halton Mental Health Clinic | Milton |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Mental Health Day Program | Oakville |
| Helping Hands Healthcare, In Home Care Services | Mississauga |
| Homewood Health Centre | Guelph |
| Joseph Brant Hospital, Burlington - Joseph Brant Community Health Centre, Mental Health Services | Burlington |
| PACT for Halton | Burlington |
| PCHS, PCHS Brampton | Brampton |
| PCHS, PCHS Mississauga | Mississauga |
| Summit Housing & Outreach Programs, Oakville, Supportive Housing & Outreach Programs | Oakville |
| Summit Housing & Outreach Programs, Case Management Supports | Halton Region |
| Sunnybrook Health Sciences Centre, Toronto - Sunnybrook Health Sciences Centre, Bayview Campus | Toronto |
| Support House, Mental Health and Addiction Support Services | Oakville |
| Trillium Health Partners, Credit Valley Hospital | Mississauga |
