Hi Sebek, Can't claim to be an expert. I am on day 8 of my first MC, but plan on doing the whole 40 days. I have a water filter system on the house, which sounds a lot like your PUR system. It purifies and removes chemicals added by the water department. I think this is fine and plan on using it. (I hope others agree, because getting purified water out of the faucet is alot easier then using distilled.)

I am also planning on doing the P&B, but haven't decided when to start. I want to do a parasite and liver cleanse also and am looking into getting a zapper.

If you are drinking water between lemonades then odds are you are already drinking half your body weight in water. (my understanding of how it works) If you weighed 200lbs then you would need to drink 100 ozs of water. That's not really that much.