COVID-19.The new bylaw on wearing masks officially came into effect on Friday, July 10. Peel Region announces mandatory masks in indoor public spaces Areas where masks will be mandatory include retail stores, grocery stores, convenience stores, places of worship, businesses providing personal care services, libraries, museums, indoor event spaces and recreational facilities, among others.Exceptions to mask-wearing include those with medical conditions, those who cannot remove a mask without assistance and children under the age of 2.In a press conference last week, Mississauga Mayor Bonnie Crombie said there will be no onus on businesses to provide their customers with a mask, but businesses will have the right to refuse customers if they.