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In the Living Earth section of Ontario Science Centre, they have exactly
this exhibit set up. They have three drinking fountains that visitors can
sample, and they can then vote for their favourite (it's a blind test).
These votes are then added up, so you can see which is the prefered choice.
I believe, although can't remember exactly, one was tap water, one was
filtered tap water and one was bottled water. Maybe someone from Ontario
Science Centre can input more here, as I am only remembering the exhibit
from a visitors point of view? I do remember thinking it was an excellent
exhibit though.

Helen

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