spring irrigation startup Checklist Calgary 2026: Step-by-Step System Turn-On

Complete spring irrigation startup checklist for Calgary homeowners. Follow this guide for a safe, damage-free system turn-on after Calgary's winter. Written by J.G. Irrigation's IA-certified technicians.

Pre-Startup Checks (Before Turning On Water)

1. Wait until May 1 at earliest — Late April frost is common in Calgary; starting before May 1 risks freeze damage to exposed components
2. Check the backflow preventer — Inspect for freeze cracks, corrosion, or open test ports. If the backflow preventer shows any damage, call a professional before turning on the main line
3. Walk the yard — Check for heaved heads from frost movement, obvious pipe surface damage, and any areas that look subsided (possible underground pipe issue)
4. Check controller power and battery — Replace backup battery annually. Confirm the display is showing correctly and the date/time is accurate after any winter power outages

Main Line Turn-On Process

1. Open the main irrigation shutoff slowly — Slow-open over 30-60 seconds to prevent water hammer and pipe stress
2. Check the backflow preventer pressure — Once water is flowing, confirm the backflow preventer is holding pressure and not leaking at the test ports
3. Allow pipes to pressurize for 3-5 minutes — Before running any zones, let the system pressurize and check for any obvious leaks at the main line

Zone-by-Zone Inspection Checklist

• Run each zone manually for 2-3 minutes
• Check every head for: complete pop-up, full arc coverage, correct radius, no geysering or flooding at the base
• Look for dry spots (indicate a clogged or failed head) and wet spots (indicate a head stuck open or pipe issue)
• Check rotor rotation — rotors that are not rotating are the #1 unnoticed system problem in spring
• Inspect drip zones — run each drip circuit and walk the line to check for emitter clogs or line breaks

Controller Programming for Calgary 2026

Calgary Water odd/even day restrictions: water on days matching your house number (odd address = water on odd dates, even address = even dates). Recommended watering time: 5:00am-9:00am for spray zones; 10:00pm-4:00am for rotor zones. Do not water during the restricted 9:00am-5:00pm window. Rachio 3 controllers can be programmed with Calgary Water restrictions using the city's flex schedule feature.

When to Call a Professional

Call J.G. Irrigation at 587-433-4795 if: the backflow preventer is damaged; more than 2 heads are broken; a zone valve will not open or close manually; you find wet patches with no visible head issue (possible underground pipe break); or the controller is showing error codes you cannot resolve.

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