The Maricopa County Board of Supervisors Formal and Informal meetings are open to the public and will proceed under ARS 38-431 et.al. Please contact the Board Assistant at (480) 731-8889.Regular Board Meetings. Maricopa CDWID meetings: 2nd Monday of each month at PM at our office 45290 W. Garvey Ave. Meetings are open to the public and we encourage customer input. The MIT board meetings are held on a monthly basis in the MIT Conference Room located at 3900 S 55th Avenue, Phoenix, Arizona, 85043. Visit our Meetings page for the Board of Supervisors agendas and minutes. View current agendas and minutes for all other boards and commissions below. The MCWDB Members meet as defined in the Annual MCWDB Meeting Calendar (found below).