Sprinkler system consists of a series of PVC tubes that run underground. PVC is a good material because it's lightweight and easy to install, but it's also difficult to locate and prone to damage. This happens frequently during fence installation because sprinkler lines usually run along the same property line where you want your fence installed. Unless your fence is installed before your sprinklers - accidental breaks in the pvc lines are unavoidable. The best thing you can do is be prepared, and have an irrigation repair company on hand ...