Probus Club of Kitchener-Waterloo

September 11, 2017

Mannheim Water Treatment Plant, Kitchener

A visit to the Mannheim Water Treatment Plant was arranged for Probus members and their partners on Monday, September 11.

We were treated to a one hour explanation, with photos, of where our water comes from and how it is purified for our use. We learned that our water undergoes more treatment and testing than does bottled water that costs much more and pollutes the planet with plastic bottles. After the presentation we visited some the treatment facilities. It is an impressive operation and our drinking water is in good hands.

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    History and Description

    The Region of Waterloo provides municipal drinking water to homes and businesses throughout the Waterloo Region treating water at Mannheim Water Treatment Plant located at 2069 Ottawa St S, Kitchener.

    Mannheim Water Treatment Plant can treat 840 Liters per second or 72.6 Million Liters per day. That’s enough water to fill over 1,450 backyard swimming pools every day! This Technical Tour will provide an overview of the Journey of water to your tap and water treatment process.

    In Waterloo Region, approximately 75 per cent of the municipal drinking water supply comes from groundwater wells and 25 per cent comes from the Grand River which goes through a multi-step treatment process:

    1. An intake pipe moves water from the Grand River to holding reservoirs which allow larger particles to settle out.
    2. The water is then pumped to the Mannheim Water Treatment Plant to begin a multi-step treatment process.
    3. The water is disinfected using a multi-barrier approach including filtration, ozonation, chlorination and ultraviolet light.
    4. The finished water enters a large underground storage reservoir where it is mixed with treated groundwater before entering the distribution system.

    To keep treated water safe while travelling through the distribution system to your tap, a minimum level of residual chlorine or chloramine must be maintained.

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