1) Recent studies found higher levels of dissolved metals and suspended particles in bottled water compared to tap water from major cities in Canada. Bottled water is also not regularly tested for many pollutants like pesticides.
2) Separate studies by the City of Toronto Health Department and Environment Canada found pesticides, suspended particles, partially dissolved metals, inorganic chemicals, bacteria, and inadequate quality control in popular brands of bottled water.
3) A University of Montreal study found that people drinking unfiltered tap water got sick more often, with water contributing to 35% of gastrointestinal issues, and found higher bacteria counts in bottled water than tap water.