Many residents in Cabbagetown have reported receiving unsolicited Water Testing Kits from a private company that sells water treatment systems. Please note the company’s clarification at the bottom of the supplied form, that they are not affiliated with the City of Toronto Health or Water Departments.
Please consider carefully whether you wish to answer the questions about which hours you work, as this then indicates when your house will likely be unoccupied (since these responses are to be left outside for pickup, anyone passing by could read this).
As with any unsolicited, commercial proposition, it is recommended that you research the industry and company that you are considering. A few resources on the residential water treatment business and some reviews on the company that has been leaving testing kits recently are included below.