HOA . we've been managing it for years. After I found out some information I gave them a estimate to re-work it. I completed it today. Basically Water meter at Entrance to HOA > A 1" pipe runs up 450' > Back Flow Assembly> 2' after the back flow assembly is 1 electronic valve> the main line then goes back down 450' to a 4 zone manifold right next to the water meter> controller is next to the water meter too. No the system wasn't looped. Funny as hell I thought. Today I Cut out the back flow assembly and installed it next to the water meter. I then Cut out the valve that was next to the original location of the BFA. I then installed a new valve next to the new location of the BFA ( Water meter) and connected the lateral to the old main line. Then continued the lines to run through from the old location of the BFA and valve Wala - Eliminating 900' of Main line. My only though that they did this was they thought the place was going to be much bigger then it was.