Signs Your Calgary Sprinkler System Needs Repair — 8 Warning Signals Homeowners Miss

Most Calgary sprinkler system failures give several warning signs before a major problem develops. Catching these signs early saves significant repair cost and prevents lawn damage during Calgary’s peak growing season. J.G. Irrigation provides same-day or next-day diagnosis across all Calgary communities. Call 587-433-4795 or visit our irrigation maintenance and repair page.

8 Signs Your Calgary Sprinkler System Needs Professional Repair

1. Wet or Soggy Patches in Specific Lawn Areas (Not Near Active Heads)

Water is migrating to the surface from a subsurface source — most commonly a cracked lateral pipe, a failed saddle tee, or a leaking elbow fitting. In Calgary, this pattern often appears in spring when freeze damage from an incomplete fall blowout manifests at the first pressurization of the season. What to do: Turn off the main irrigation shutoff if the leak is active. Call J.G. Irrigation for a service call. Repair cost: $145 to $325 per break.

2. One Zone Runs Continuously or Will Not Turn Off

The zone valve solenoid or diaphragm has failed in the open position, or debris has fouled the diaphragm preventing valve closure. What to do: Close the main irrigation shutoff if you cannot stop the zone. Call J.G. Irrigation — zone valve repair is a same-day service. Repair cost: $65 to $225.

3. Dry Strips Between Zones or Uneven Coverage

A head within a zone is not operating at design radius — either a clogged nozzle, a worn nozzle with reduced throw, a head that has not popped up fully, or a head displaced by frost heave from its original position.

4. Puddles Forming at Head Locations During Zone Run

Water is pooling at the head location rather than distributing across the zone, indicating a head body seal failure or a head sinking below grade after Calgary frost heave.

5. Water Pressure Drops Noticeably Mid-Season

A slow pressure drop across all zones usually indicates a subsurface leak on the mainline, a failing zone valve passing water at the valve seat even when commanded OFF, or a partially open main shutoff valve.

6. Controller Shows Zone Running But No Heads Pop Up

The zone valve is opening but no water is reaching the heads. Check the main irrigation shutoff is fully open first. If it is, call J.G. Irrigation for diagnosis.

7. Higher Than Usual Water Bills in Summer

A Calgary summer water bill 15 to 25% above the previous year’s same-period bill warrants an irrigation audit. J.G. Irrigation performs irrigation audits as a standalone service to identify and correct efficiency losses.

8. Backflow Preventer Relief Valve Dripping Continuously

The RPZ backflow preventer’s relief valve drips continuously even when the irrigation system is not running. This indicates a failing first check valve — a cross-connection control compliance failure. Cost: $95 to $250 for internal repair; $350 to $650 if body requires replacement. Call J.G. Irrigation at 587-433-4795 for same-day RPZ service in Calgary.