(2) A city and county, or any combination thereof, may enter into a written agreement, as provided in ORS 190.003 to 190.620, jointly to establish, operate and maintain alcohol and drug abuse prevention, early intervention and treatment services. [1973 c.682 §§8,9; 1977 c.856 §14; 1987 c.53 §10; 1987 c.61 §3; 2017 c.204 §3]