How To Blow Water Out Of The Automatic Sprinkler System You can use air pressure to remove the water from the lines and sprinkler heads. Start by turning off the water supply to the sprinkler system.

Some systems have a drain near the sprinkler shutoff valve, and that can be in your home—usually a basement, near the water heater. It will look like a hose spigot on your sprinkler line.

Turn the sprinkler station on and blow any debris out of the line, then screw the sprinkler head back on. If your sprinkler head breaks frequently, it is probably too high.

If you blow your sprinkler lines out in October, you will likely have to manually water for several more weeks.