Sprinkler malfunctions happen when you least expect. It is important to turn off the water to the leaking irrigation system. The backflow device can be in-ground or above ground. The in-ground Double Check back flow device is identified by a green lid usually near your water meter around 12” x 18” in size. Take off the lid and turn one of the handles 90 degrees to the right. The above ground RPZ back flow device is found near the water meter or on the side of your home, turn one or both handles 90 degrees to the right. The above ground RPZ has a tendency of freeze in the winter. Contact us for repair or winterization.