As the snow melts and temperatures rise across Canada, it’s time to bring your irrigation system back to life. Harsh winters can cause hidden damage to sprinkler systems and drip irrigation lines, leading to leaks, low pressure, or costly repairs if not caught early.
This step-by-step spring irrigation startup guide will help you safely inspect your system, identify winter damage, and get everything running efficiently for the growing season.
Why Winter Damage Happens
Freezing temperatures can cause water left in your irrigation system to expand, leading to cracked pipes, broken sprinkler heads, and damaged valves. Even if your system was properly winterized, it’s still important to perform a full inspection in the spring.
Common winter damage includes:
-
Cracked PVC pipes or fittings
-
Broken sprinkler heads
-
Leaking valves
-
Damaged drip irrigation tubing
-
Faulty backflow preventers
Step 1: Turn On Water Slowly
Before inspecting anything, slowly turn your main irrigation water supply back on.
Why this matters:
Turning the water on too quickly can cause a pressure surge, making existing cracks worse or blowing out fittings.
What to watch for:
-
Sudden drops in pressure
-
Water pooling near valves or lines
-
Unusual hissing or spraying sounds
Step 2: Inspect for Visible Leaks
Walk your property and look for obvious signs of damage.
Check:
-
Wet or soggy patches in your yard
-
Water bubbling from the ground
-
Leaks around valves and manifolds
These are strong indicators of underground pipe damage caused by freezing.
Step 3: Test Each Irrigation Zone
Run each zone individually from your controller or manual valves.
Look for:
-
Sprinkler heads not popping up
-
Uneven spray patterns
-
Low water pressure
-
Zones not turning on at all
If one zone isn’t working, the issue is often a valve or electrical problem.
Step 4: Check Sprinkler Heads
Sprinkler heads are one of the most common failure points after winter.
Inspect for:
-
Cracks or physical damage
-
Heads stuck in the ground
-
Tilted or misaligned heads
-
Clogged nozzles
- Heads not rotating
Replace damaged heads to avoid water waste and poor coverage.
Step 5: Inspect Drip Irrigation Lines
If you use drip irrigation, carefully check tubing and emitters.
Look for:
-
Cracked or brittle tubing
-
Loose fittings or connectors
-
Blocked or non-functioning emitters
Even small cracks can significantly reduce system efficiency.
Step 6: Check Valves & Backflow Preventer
Your system’s valves and backflow device are critical components.
Inspect:
-
Valve boxes for standing water
-
Leaks around fittings
-
Backflow preventer for cracks or drips
Damage here can affect your entire system and may require replacement.
Step 7: Test Your Irrigation Controller
Make sure your controller is working properly after winter.
Check:
-
Date and time settings
-
Zone programming
-
Manual start function
Power outages over winter can reset your schedule.
Step 8: Adjust & Optimize Your System
Once everything is working:
-
Adjust spray direction for proper coverage
-
Set watering schedules for spring conditions
-
Replace any inefficient or outdated components
This is a great time to upgrade to water-efficient sprinkler heads or drip systems.
⚠️ Signs You May Need Repairs
Call for help or replace parts if you notice:
-
Constant low pressure
-
Multiple leaking areas
-
Zones not activating
-
Unexplained high water usage
Get Your Irrigation System Ready for the Season
A proper spring irrigation check ensures your system runs efficiently, saves water, and keeps your lawn and garden healthy all season long. Catching winter damage early can prevent costly repairs and wasted water.
At SprinklerShop, you’ll find everything you need for irrigation system repairs, including sprinkler heads, valves, fittings, and drip irrigation supplies—all shipped across Canada.