Waterloo drinking water path

• Source & supply

  Groundwater aquifers (Region of Waterloo wells)

  Grand River

  Region trunk mains, elevated tanks, and reservoirs feed the City of Waterloo distribution system. Hardness is characteristically high on the groundwater-dominated blend.

  Regional materials emphasize that most municipal water in Waterloo Region is groundwater; Grand River water at Mannheim is the key surface supplement supporting Kitchener–Waterloo growth.

• Treatment

  Region of Waterloo well supplies and Mannheim Water Treatment Plant

  City of Waterloo retail customers receive Region-treated water from wells and from Mannheim’s Grand River plant. The Mannheim Service Area capacity constraint explicitly includes Waterloo.

• At the tap

  Hardness 119 mg/L (Moderate)

  Grade C (Fair)

  pH 8.2 · lead 0.7 μg/L

  ECCC / municipal open data (seed)