It is important to turn off your sprinkler system for winter to prevent freezing and damage to the system during cold weather. Typically, this is done in late fall or early winter, before the first hard freeze.
Here are some helpful tips:

1. Locate the main shut-off valve for your sprinkler system. It's usually found near the main water source or in a valve box.
   
2. Turn off the water supply to your sprinkler system using the main shut-off valve. This will prevent any water from entering the system and freezing.
   
3. Drain any remaining water from the system. This can be done using the manual drain valve located at the low point of the system.
   
4. Cover above-ground pipes and valves with insulation to protect them from freezing.
5. Blow out your sprinkler system with compressed air to remove any remaining water (some remove the backflow preventer and store it inside)
   
6. Turn all ball valves to a 45 degree angle (half closed to prevent water being stuck behind the ball)

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By taking these steps, you can ensure that your sprinkler system will be protected during the winter months and ready to use when spring arrives.

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