In this how-to video, you will learn how to install a lawn irrigation system. You must have a digital controller with an AV program. This controls the zones at which the water comes on. These can save you a lot on water use. The controller controls the valve which accesses the water. Make sure all your sprinkler heads are all the same. There are different types of heads, each serving for different situations. Backflow preventers are needed as well, as they prevent contaminants from going back into your water supply. Viewing this video will give you information on the basics of installing a lawn irrigation system.