Customer called us out for a suspected leak in the back yard. Ran all 4 zones and watched the suspected area, no leak was evident. Opened the master valve and checked the meter, no leak on the main line. Checked controller settings, everything appeared normal. Customer said that her neighbor was spraying with a hose around the time she found a large amount of water in her yard, I suspect that’s the cause. Told the customer to keep an eye out as her system runs to see if it happens again, if there is a leak then it’s on a zone and very small, informed customer of leak detection companies. Sent customer an estimate to replace old backflow device.