Hamilton’s top doc ‘not convinced’ new lockdown would impact disease or deaths from COVID-19 Public health is undergoing a contact tracing investigation and advising residents out of an abundance of caution.“The contractor was completing in-home water meter replacements during the week of March 15 to 19, 2021 at homes in Dundas, Greensville and West Hamilton,” the city said.City staff estimate the contractor visited around seven to nine homes per day and was wearing an N-95 mask in addition to other personal protective equipment (PPE) while inside residents’ homes..