Why your lawn can look “thirsty” even when the sprinklers run
A quick “symptom-to-cause” breakdown (most common sprinkler repair calls)
| What you notice | Most likely cause | Best first step | When to call a pro |
|---|---|---|---|
| One head doesn’t spray | Clogged nozzle/filter, cracked head, or a stuck stem | Clean nozzle + screen; check head height/tilt | If the body is cracked, the riser is broken, or it keeps clogging |
| Heads won’t pop up (whole zone) | Low pressure, partially closed valve, restriction, or underground leak | Check water supply valve(s); inspect for pooling/soggy areas | If pressure is consistently low or you suspect a buried leak |
| Dry patches next to soggy patches | Misaligned heads, mixed nozzles, clogged screens, or coverage gaps | Run each zone and watch head-to-head coverage | If the system needs re-nozzling or zone balancing |
| System runs at the wrong times / overwatering | Controller programming not adjusted for seasons | Use seasonal adjustment (“water budget”) or upgrade to smart control | If wiring, sensors, or programming issues persist |
| Water constantly weeping from a head after shutdown | Valve not sealing, debris in valve, or low-head drainage | Note which zone it’s on; look downhill (drainage) | If it’s a valve issue or continuing saturation near foundations |
What causes “low pressure” sprinkler problems (and why they matter)
Step-by-step: a homeowner-friendly sprinkler repair checklist
1) Run one zone at a time (and watch, don’t guess)
2) If one head is weak: clean the nozzle and filter screen
3) If the whole zone is weak: look for pressure loss before replacing parts
4) Check head height, tilt, and turf “burying”
5) Fix scheduling before adding runtime
When DIY stops making sense
The Boise/Treasure Valley angle: seasonal sprinkler timing that prevents damage
If you’d like a set-it-and-forget-it approach, consider controller settings that are easy to adjust by season. EPA WaterSense highlights that many systems are programmed for peak summer and then never adjusted, which leads to unnecessary watering outside of peak demand.
