For our waterer, we use an 85 gallon poly tank with a float in the bottom. A second float is installed in the top to control flow from the inlet hose. This is placed on a raised platform of pressure treated boards, and backfilled with gravel. The raised platform and gravel are intended to keep the splashed-out water from becoming a wallow. (The shelters provide them with plenty of shade and air flow to keep them cool in the summer). We use a hangman-type scaffolding to carry the piping over the hot wire and into the water tank. Otherwise, the pigs will chew the pipe to the point of breaking.