As someone who drinks a helluva a lot of water, I can't say I've ever had a ridiculous tolerance. I generally smoke at least once a day, 2-3 more preferably and when I have the weed and I can still get pretty high off a small amount.

I suggest trying it to see for yourself. You should drink a lot of water anyway. Our bodies are like what, 80% water? We're THAT close to drowning, I like to live on the edge.