Canadian Mental Health Association York Region and South Simcoe (CMHA-YRSS) is an award-winning branch of the national nonprofit, Canadian Mental Health Association. Canadian Mental Health Association York Region and South Simcoe (CMHA-YRSS) offers over 30 specialized mental health programs and services that are here for everyone: youth, adults, family members and caregivers. We understand everyone has a unique situation which is why we offer a variety of mental health services to the Aurora community.