Well, I started this thread discussing the right size of PVC pipe to use, I went ahead and got all the parts for a 2" pvc watering system hooked up to a 4 gallon bucket. Wouldn't you know it, after I got it all figured out my lovely girl informed me that she didn't want to eat eggs full of PVC! I actually started a thread about using PVC for their water and it seems like that was the material or choice, probably because its cheap and easy to find.
So my new plan is 1" copper pipe all around, into a 4 gallon bucket (food grade plastic,#5) The parts were about 4x the cost over all but I have to say I feel a little better about it ( i wouldn't drink out of PVC) and it will look really, really cool.
I will post some pics as soon as its done, hopefully a week or 2.
Might be a little overboard but we are going organic, natural and trying to avoid plastics were ever possible, in and out of the house.