How to Winterize Your Irrigation and Drainage System on Long Island
Fall cleanup is not finished when the leaves are gone. Before freezing temperatures arrive, your irrigation and drainage systems need attention too.
A proper winterization protects sprinkler lines, valves, backflow devices, drainage components, and the landscape around your home. It also gives us an opportunity to spot small problems before they become expensive ones.
When Should You Winterize a Sprinkler System on Long Island?
Most Long Island irrigation systems should be winterized in the fall, before the first sustained freeze. Do not wait until the weather forecast calls for a hard freeze. By then, appointments may be limited and exposed components may already be vulnerable.
At the same time, you do not want to shut the system down too early. Lawns, trees, shrubs,
and fall plantings may still need water during a warm, dry autumn. The right timing depends on the weather, your plants, and the conditions on your property.
What Does Professional Irrigation Winterization Include?
Winterizing an irrigation system involves more than turning off the controller. The water supply must be shut down, and remaining water must be removed from the lines, valves, and sprinkler heads.
We use compressed air to clear each irrigation zone carefully. The pressure and air volume must be appropriate for the system. Too little air can leave water behind. Too much can damage fittings, valves, and sprinkler heads.
The backflow preventer and other exposed components also need to be drained and positioned correctly. These parts are especially vulnerable because they sit above ground. Even a small amount of trapped water can freeze, expand, and crack a component.
This is one job I do not recommend guessing your way through.
Should You Turn Off Your Smart Irrigation Controller?
A smart controller can adjust watering based on weather conditions, but it cannot protect pipes from freezing. Once the system is winterized, the controller should be placed in its recommended winter or off setting without disconnecting any programming that will be needed in spring.
This is also a good time to note repairs, coverage problems, or struggling areas that should be addressed when the system is turned on again.
How Do You Prepare a Drainage System for Winter?
Drainage systems are not winterized the same way irrigation lines are. They need to be inspected and cleared so fall rain, melting snow, and winter runoff have somewhere to go.
Remove leaves, mulch, soil, and other debris from:
Catch basins and channel drains
Downspout connections and discharge points
French drain openings
Window wells
Areas around sump pump outlets
Make sure downspouts and drainage lines direct water away from the foundation. Water that collects near the house can contribute to basement moisture, foundation problems, soil erosion, and damaged hardscapes.
What Drainage Problems Should You Look for in the Fall?
After a heavy rain, walk the property. Look for standing water, soggy soil, washed-out mulch, overflowing drains, or water collecting near the foundation.
I have been on properties where basement water started with improper grading or drainage that was simply dumping water against the house. The warning signs were there. They just were not addressed early enough.
Professional Irrigation & Locust Valley Irrigation can winterize your irrigation system and inspect how water is moving across your property. Call (631) 789-0500 or fill out our contact form to schedule fall service.
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