Do I need to reinforce the floor?

[Myka]

I'm not familiar with prairie building codes (my carpentry experience was in BC), why is your house on piles? I'm assuming you're calling it a basement because it is a living space under the tank, right? With a living space below it could be quite the eyesore to reinforce the floor. Why don't you just get your home builder to come in and suggest a way to reinforce the floor?

Personally, I would just figure out a different way to position the tank.