Pursuant to the authority granted under Iowa Code section 364, this Ordinance is enacted to protect and preserve the rights, privileges, and property of the residents of Mount Vernon and to preserve and improve the peace, safety, health, welfare, comfort, and convenience of the residents of Mount Vernon. The purpose of the ordinance is to prohibit the consumption of controlled substances including any synthetic versions of alcoholic beverages by persons under the age of twenty-one (21) at gatherings where adult persons knowingly tolerate, allow, or permit the illegal possession and consumption of controlled substances or alcoholic beverages by persons under the age of twenty-one (21) on property they own or control.