Haw. Rev. Stat. § 334-2: Mental health system.

The department of health shall foster and coordinate a comprehensive mental health system utilizing public and private resources to reduce the incidence of mental or emotional disorders and substance abuse, to treat and rehabilitate the victims in the least restrictive and most therapeutic environment possible, and to provide treatment and care for homeless individuals with serious and persistent mental health challenges to enable them to reside in a permanent dwelling unit or homeless facility, as defined in section 346-361. The department shall administer such programs, services, and facilities as may be provided by the State to promote, protect, preserve, care for, and improve the mental health of the people.