How to Troubleshoot Common Irrigation Problems

A malfunctioning irrigation system doesn’t just waste water — a leak or stuck valve forces the rest of the system to work harder, shortening its lifespan while quietly running up the water bill. Catching problems early, and knowing which ones are safe to handle versus which need a professional, keeps small issues from turning into bigger ones. Always shut off water and power to the system before attempting any repair.

Broken or Misaligned Sprinkler Heads

Signs: dry patches in the yard, or water spraying onto sidewalks and driveways where it shouldn’t be.

Soil settling, foot traffic, and lawn mowers can all knock a sprinkler head out of alignment or damage it outright. A misaligned head can usually be shifted back into position; a damaged one should be replaced rather than patched. While checking one head, it’s worth glancing at the nearby ones too — damage rarely shows up in isolation.

Leaks in Pipes or Lines

Signs: flooded or swampy patches in the landscape, or a water bill that’s climbed with no clear explanation.

Tree roots and sharp rocks in the soil are common culprits behind a burst or cracked line. After shutting off the water supply, carefully dig in the suspected area to locate the leak, replace the damaged section, and test the flow before backfilling. Checking nearby sections of line for additional stress points is worth the extra few minutes.

Valve Failures

Signs: a zone that keeps watering well past when it should have shut off.

Valves control which zones water and when — if one’s stuck open, it’s either clogged with debris or has a wiring/solenoid issue. Debris can often be cleared to restore function; a wiring or solenoid problem is a better candidate for professional repair.

Malfunctioning Controller

Signs: the system running off schedule, or not responding to a remote at all.

The controller is effectively the system’s brain, so when it acts up, everything downstream can look broken even if it isn’t. A reset or restart solves the issue in some cases; if that doesn’t work, faulty wiring is the likely cause — and that’s repair work best left to a professional, given the electrical risk involved.

DIY or Professional Repair?

Diagnosing these issues takes a careful eye, and fixing them takes time, the right parts, and in some cases electrical know-how. Simple fixes — realigning a head, clearing debris from a valve, resetting a controller — are reasonable to handle solo. Anything involving wiring, solenoids, or a repeated failure after a DIY fix is a good signal to bring in a professional instead of troubleshooting the same problem twice.

FAQ

How often should an irrigation system be inspected? A quick visual check each season — especially at spring startup — catches most issues before they become bigger problems.

Can a leak really affect my water bill that much? Yes — even a small, steady leak adds up significantly over weeks or months of continuous running.

Is it safe to work on valves or controllers myself? Clearing debris or resetting a controller is generally safe; anything involving wiring should go to a professional given the electrical risk.

What’s the most common cause of uneven watering? Misaligned or damaged sprinkler heads are usually the first thing worth checking.

Not sure what’s wrong, or don’t have time to troubleshoot it yourself? Contact us and we’ll take a look.