Looking to follow in the footsteps of Toronto's Sherbourne Commons, this Lower Don Lands Community Water Treatment Facility acts as an education plant for treating the grey and black water of the community.  The main idea is that no amount of help is too small.  Water is piped in from sewers and homes; it is then treated in several different methods: chemical, radiation, and natural.

After treatment, the water is absorbed in a marsh-like landscaped filled with fish and plants, until it reaches the boardwalk, and then the remainder will from the Don River to Lake Ontario.

For inspiration into water treatment, I researched ancient sand filtration systems, modern home Ultra Violet Radiation Systems, which are small enough to fit in a basement, but they can filter amounts of water proportional to an average household, and natural methods used by Stephen Holl and Michael Van Valkenburg.  The natural methods involve oxygenating the water and exposing it to as many plants, roots, and life forms as possible.