Step-by-Step Guide to Restarting Your Lawn Sprinkler System After Winter
After months of inactivity, your irrigation system needs a thorough check to ensure smooth operation for the season ahead. This step-by-step guide will help you inspect, test, and fine-tune your system for the best results.

What You’ll Need
✔ Basic Tools: Screwdriver, pipe cutters, pliers, and a shovel (if repairs are needed)
✔ Replacement Parts: Extra nozzles, drip fittings, or other components as required

Visual Inspection & Cleaning
🔹Find the Main Valve Box: Locate your irrigation system’s main shut-off valve.
🔹Clear Out Debris: Open the valve box and remove dirt, leaves, or obstructions.
🔹Inspect Components: Check for visible damage or leaks in the main shut-off valve and backflow preventer.
🔹Turn Off the Controller (if it is ON): This prevents zones from activating when you restore water pressure.

step 2
Gradually Reintroduce Water
⚠️ Open the Main Valve Slowly!
Never fully open the main valve all at once! Doing so can cause a dangerous pressure surge, leading to pipe bursts or damage fittings. Instead, turn the valve gradually to allow water to flow in slowly. This prevents water hammer (a sudden pressure shockwave) and ensures a smooth, controlled system startup. Take your time—rushing this step can result in costly repairs!

step 3
Test & Adjust Sprinkler Coverage
🔹Activate Each Zone Individually: Use your controller’s test mode to turn on each zone one at a time.
🔹Observe the Spray Pattern: Ensure each sprinkler head covers its intended area without overspray or dry spots.
🔹Make Adjustments: Reposition sprinkler heads and adjust nozzles as needed for even water distribution.

step 4
Check for Leaks & Monitor Pressure
🔹Inspect All Connections: While the system is running, check for leaks around valves, pipes, and sprinkler heads.
🔹Assess Water Pressure: Low pressure could indicate blockages, missing sprinklers or hidden leaks.
🔹Look for Uneven Watering: Ensure water is distributed evenly and that no areas remain dry. Check and clean filters on poorly performing sprinklers.

step 5
Update Your Controller Settings
🔹Review & Adjust the Schedule: Set watering times to match your landscape’s needs.
🔹Follow Local Watering Restrictions: If you live in Metro Vancouver, check current watering regulations before setting your timer.
🔹Consider Environmental Factors: Adjust watering durations based on weather conditions, soil moisture, and rainfall.

step 6
Final Activation
🔹Turn on the Timer (If needed): If the soil is dry and no significant rainfall (10mm or more) is expected, activate the system. Otherwise, leave it off to conserve water. For recommended watering times, check our blog.
🔹Monitor Performance: Keep an eye on your system over the next few days and make any necessary adjustments.
Important Reminder!
Irrigation systems operate under pressure and can be unpredictable. If you encounter unexpected issues, need repairs, or are unsure about any step, seeking professional help is always a good option.
For homeowners in Metro Vancouver, check out our Spring Start-Up Service for expert assistance!
Enjoy a lush, healthy lawn with a well-maintained irrigation system this season!
