1. Backflow prevention is to stop dirty or contaminated water from flowing backward from your sprinkler system into the clean/potable water provided by the municipality. It is a special device that prevents water from flowing backward. These devices though design to very high standards can age and malfunction, therefore you are required to test the device annually to assure it is functioning. Municipalities are like the phone company they provide and guarantee service to your home, any equipment attached to the system belongs to you.
After all the landscape decisions have been made we start the layout of the irrigation system.