whats the 100 ft rule for h2o?

Answer 1

http://www.cityofkingsville.com/Commission/Code%20of%20Ordinances/public%20work/waterandsewermainext.htm

Answer 2

banana may be correct. I don't know for sure. I've never heard of this. The only thing that comes to mind is possibly some kind of pumping limitation for water.

Don't put much stock in my answer tho. I'm only offering this on the chance that you get few responses and have nothing to go. At least you'll have this response to do soem checking against.

Good luck........I'm curious now.