Program Information Tri-City Mental Health was established in 1960 through ahistory Joint Powers Authority (JPA) Agreement between the cities of Claremont, La Verne, and Pomona, to deliver mental health services to the residents of the three cities. Through this collaborative effort, Tri-City has been the designated mental health authority for local residents, serving children, youth, adults and older adults alike.\r\n\r\nTri-City understands the needs of consumers and their families and acknowledge their strengths and ability to contribute to the development of their path to recovery. We are committed to providing the highest quality and culturally inclusive behavioral health care treatment, prevention and education to help individuals maintain and improve their mental health.