Just behind the main building I showed you yesterday is a secondary building where they actually pump the water right out of Lake Ontario. Once it's brought in, it goes up to the main building where it goes through several treatment steps before being sent out to Torontonians to drink!
The pumping station was quite impressive - all those motors running were really quite loud! But I love to see how things work and it was also fantastic that such a wonderfully decorative building still has a practical use today.