The seasons are changing, and freezing temperatures will be here before we know it. Now is the time to winterize your sprinkler system and protect it from cold-weather damage.

Water left inside irrigation pipes, valves, sprinkler heads, or backflow devices can freeze and expand. This may cause cracks, leaks, and costly repairs when the system is turned back on in the spring.

When Should I Winterize My Sprinklers?

Sprinkler systems should be winterized before the first hard freeze. Irrigation professionals can become very busy during the fall, so residents are encouraged to schedule service early.

Fall Sprinkler Checklist

• Schedule your sprinkler blowout.
• Turn off the water supply to the irrigation system.
• Drain or properly blow out the sprinkler lines.
• Winterize the backflow prevention device.
• Check exposed pipes, valves, and sprinkler components.
• Disconnect and store outdoor hoses.
• Follow the manufacturer’s instructions for your irrigation controller.

Should I Hire a Professional?

Sprinkler blowouts require the correct equipment, air pressure, and knowledge of the irrigation system. Using too much pressure or connecting equipment incorrectly can damage the system or cause an injury.

If you are unfamiliar with the process, consider contacting a qualified irrigation professional.

Don’t Forget About Winter Watering

Winterizing your sprinkler system does not always mean your landscape will need no additional water. During extended periods of dry weather, trees, shrubs, and lawns may benefit from occasional winter watering when temperatures are above freezing and the ground is not frozen.

Use a hose or watering wand, disconnect it when finished, and avoid watering when freezing temperatures are expected.

Private Sprinkler Systems

Sprinkler and irrigation systems located on private property are the homeowner’s responsibility. Meridian Service Metropolitan District does not maintain or winterize private irrigation systems and does not provide sprinkler blowout services.

For additional guidance, visit Colorado State University Extension’s sprinkler winterization guide.