Irrigation Winterization
in Olympia, Lacey, and Tumwater, WA

As fall arrives in Olympia, Lacey, and Tumwater, irrigation systems become vulnerable to freezing temperatures. Water left in underground pipes or valves can freeze, expand, and cause cracks or burst lines. Irrigation winterization involves safely shutting down your sprinkler system, blowing out water from each zone, and preparing your system to sit idle until spring. This essential service protects your investment and prevents expensive repairs once the cold sets in. The process also helps avoid backflow issues and controller malfunctions during the off-season.

While daytime temperatures in these areas may remain moderate, overnight freezes are common and can wreak havoc on unprepared irrigation systems. Pipes located just below the surface are especially prone to freezing, which leads to cracks and leaks. Winterizing the system before the first freeze reduces the risk of long-term damage and keeps components like valves, heads, and backflow devices in working condition. Homeowners who skip this step often face surprise repairs when they turn their systems back on in spring.

In Olympia, Lacey, and Tumwater, the ideal time to winterize is typically from late October through early November. This timeframe provides enough lead time before overnight temperatures begin to consistently drop below freezing. Waiting too long increases the chance of hidden damage, especially in low spots where water can settle. By planning early, you allow professionals to safely shut down the system, blow out water in every zone, and make sure the components are secure for winter.

A proper irrigation winterization includes more than just turning off the water. At Premium Landscape Service, we perform a full shutdown and inspection using professional-grade tools to ensure your system is cleared and protected. Our typical winterization process includes:

• Turning off the irrigation system water supply
• Using commercial air compressors to blow out all sprinkler zones
• Draining and securing the backflow preventer
• Inspecting visible components for signs of wear
• Setting controllers for winter mode or turning them off completely

This method ensures your irrigation system stays in good condition and is ready to go when spring arrives.