At the end of last summer, my wife and I bought our first house. Yay. Lot's to be done. When spring came, I got to turning on the water for the sprinkler system. Turned the stop&waste and the sprinklers in the front yard work beautifully. However, the backyard sprinkler valves have no water to them. I've completely removed the screw for the manual override and no water comes out. Because of this, I've concluded that there is either a: another valve for this supply line (which if there is, I can't find.) or b: this supply line has been disconnected. I've contacted the previous owner, and he doesn't remember anything. The people that were renting it when we bought it also don't remember the sprinklers ever working in the back. I would just dig up the ground and follow the supply line to the source, but I can't do that. It appears to go underneath the driveway. I could dig up on the other side of the driveway, and guess where it comes out, but I don't really want to mess up my beautiful front lawn right now. If I can't do that, the only solution I see is to run a new supply line out of the side of the house under the deck from the utility room. I don't really want a visible pipe, so this is kind of a bummer. At the end of of the season we're planning on spraying the whole yard with roundup (as it's mostly weeds) and next spring, laying new sod after getting the sprinklers working. I'm worried about HOW to get those sprinklers working though. Any suggestions?