It is the water source , he might have tapped off the back yard spicket which is regulated inside your home @ the water heater with a prv (pressure regulater valve) ,or it might be a break in the line ,how you can check it it cap off one head @ a time and run it in between to see if a leak shows in the yard , or he might have put too many heads on the line(zone) .
Nestor's Sprinklers & Lighting
Alpharetta,Ga. 30022
www.GeorgiaLighting.net
www.NestorsLandScape.com
Vincent Nestor
Vincent Nestor
Nestor's Sprinklers & Lighting
Alpharetta,Ga.30022
vpn1@bellsouth.net
www.NestorsLandScape.com
www.GeorgiaLighting.net