The line is 8 feet underground from a pressure tank in the house.  it comes up a riser beneath the middle of the tank.  The tank has a nipple welded into the center pipe.  I connect the riser and the tank using a quick coupler (in case I ever have to pull the tank out to work on the hose.  The tank has a fancy Watson float made in Nebraska.  The tank has a cement plug with the pipe set in the middle of it.  The pipe is 24" I think.