Sprinkler System Inspection Checklist (Irrigation): What to Check + How to Dictate Findings Fast
Irrigation systems are classic “it works until it doesn’t” components.
A sprinkler system can look fine on the day of inspection and still waste hundreds of gallons a week from a stuck valve, broken head, or mis-aimed spray pattern. The goal of an inspection isn’t to become an irrigation tech — it’s to document what you can observe and test, then recommend service when needed.
This field checklist covers what to check, what to photograph, and language that keeps your report clear.
Important
Follow your SOP and local limitations. Some inspectors test irrigation only if the system is on/seasonal, if the controller is accessible, and if water supply is available.
Step 0: Record the Basics
- System type: in-ground irrigation / drip / mixed
- Controller location (garage, basement, exterior)
- Number of zones (from controller) if visible
- Water source (house supply / well / reclaimed) if known
- Seasonal limitation (winterized/off)
Controller & Operation Checklist
- Controller powers on
- Zones labeled (or not)
- Manual run function works (if tested)
- Rain sensor present (if visible)
Photo set:
- Controller overview
- Zone schedule/labels (if present)
Zone Walk Checklist (Run 2–3 Representative Zones)
When running a zone, look for:
- Heads popping up fully
- Consistent spray/rotation
- Overspray onto siding/windows
- Spraying driveway/sidewalk (waste)
- Dry spots (coverage)
- Low pressure/misting
Document:
- Which zone(s) tested
- Any areas not tested and why
Heads, Sprays, and Rotors (Common Defects)
- Broken or tilted heads
- Heads too low (buried) or too high
- Clogged nozzles (uneven pattern)
- Spray hitting structure
- Leaks at head body (puddling)
Photo set:
- Wide shot showing area
- Close-up of broken head/leak
Valves & Manifolds
- Evidence of leaks at valve boxes
- Valve box covers missing
- Standing water in valve box
If you can’t locate valves, note limitation.
Backflow / Anti-Siphon (If Present)
- Backflow preventer present (if visible)
- Evidence of leakage/corrosion
- Proper installation height/location is a specialist call — recommend service if concerns
Key Takeaway
Backflow devices are high-liability components. If you see corrosion/leaking, recommend evaluation by a qualified irrigation/plumbing professional.
Drip Irrigation (If Present)
- Emitters clogged/missing
- Lines damaged by landscaping
- Drip lines against structure (moisture risk)
Report Language Templates
System not tested (seasonal/winterized)
“Irrigation system was not tested due to seasonal/winterized condition or system was turned off at time of inspection. Recommend irrigation contractor evaluate and service prior to use.”
Limited zone testing
“Irrigation system was tested by running representative zone(s). Full coverage of all zones was not verified. Recommend full operational check and adjustments by a qualified irrigation contractor as needed.”
Waste/overspray
“Sprinkler head(s) observed spraying onto siding/windows/hardscape. Recommend adjustment/repair to reduce water waste and minimize moisture exposure to building materials.”
Leak
“Leakage observed at sprinkler head/valve area. Recommend repair and re-check for soil erosion or damage.”
Where ReportWalk Helps
Irrigation write-ups get vague fast. ReportWalk helps you dictate:
- Zone tested + what you observed
- Photo-backed defect notes
- Clear recommendations without overpromising full coverage
Quick Field Checklist (Copy/Paste)
- Controller powers on / zones labeled
- Run 2–3 representative zones (document which)
- Heads pop-up, pattern correct, no overspray
- Broken/tilted/buried heads documented
- Valve boxes checked for leaks
- Backflow observed (if visible)
- Limitations + seasonal notes included
