A pre-summer irrigation inspection checklist covers 12 distinct check items across the controller, each zone, the supply line, the backflow device, and the head coverage pattern.
The goal is to confirm the system is ready for peak demand before June heat arrives, not to respond to failures that appear in July. A complete inspection takes 60-90 minutes for a standard 4-8 zone system and should be completed by May 31 across all active markets.
Quick Summary
- A complete inspection requires physically walking each zone while it runs. A controller review without zone activation misses most field failures
- Check the backflow device as a compliance item, not just a technical one. A missing or expired device is a code violation in most Breasy markets
- Document every zone with photos. For property managers managing remotely, photos are the only way to confirm what was checked and what was found
- Failures found in May get repaired before peak demand. Failures found in July compete for vendor availability during the highest-cost repair window of the year
Need a pre-summer irrigation inspection across your portfolio?
We complete the full 12-item checklist with written report and same-day photos. Scheduled within 48 hours across all active markets.
Why a Pre-Summer Inspection Is Different From Routine Maintenance #
Routine maintenance addresses known problems. A pre-summer inspection is a structured search for unknown ones. The irrigation system may have operated normally through spring at lower demand.
Summer doubles or triples run frequency, raises zone pressure demands, and puts systems under stress they have not seen in months. Issues that were marginal in spring become failures in July.
For property managers, the pre-summer inspection is also a documentation event. A written inspection report with photos from every zone creates a baseline record.
When a zone fails in August, the inspection report tells you whether the failure was present in May and not caught, was a new development, or was identified and repaired in the pre-season window.
The Complete Pre-Summer Irrigation Inspection Checklist #
Controller and Scheduling Checks #
Controller Checklist
- ✓ Summer program active: Confirm the controller is running the summer schedule, not the spring program. Spring run times are shorter than what summer demand requires
- ✓ Watering days confirmed: For Phoenix properties, confirm the schedule matches the designated restriction day (odd/even address) under current Stage 2 rules
- ✓ Start time window correct: All zones scheduled to run between 4:00am-9:00am. No zones running in the prohibited 10am-6pm window
- ✓ Backup battery replaced: Replace the controller backup battery before June 1. A dead backup battery loses programming on the first monsoon power outage
- ✓ Rain sensor functional: If installed, confirm the rain sensor is clean, properly positioned, and shutting down the controller correctly when wet
Zone-by-Zone Run Checklist #
Activate each zone from the controller manually and walk it while it runs. Do not evaluate a zone from the controller panel alone. Most field failures are not visible without being present during a zone run.
Per-Zone Checklist (Repeat for Every Zone)
- ✓ Zone activates within 30 seconds of command: A zone that takes more than 30 seconds to activate or does not activate at all indicates a wiring, solenoid, or valve issue
- ✓ All heads pop up fully: Heads that only partially extend are running at insufficient pressure for full pop-up. Note which heads and the zone they are on
- ✓ Rotary heads complete full arc: A rotary head that stops mid-rotation is under-pressured. Identify the zone and confirm no broken heads in the zone are bleeding pressure
- ✓ No geysering or misdirected heads: A head spraying vertically or in the wrong direction has a cracked body, a broken nozzle, or has been displaced from its original position
- ✓ Head-to-head coverage confirmed: Walk the zone and confirm each head’s spray reaches the adjacent head. Gaps between heads create dry strips within 7-10 days in summer heat
- ✓ All heads retract after zone shuts off: A head that remains in the up position after the cycle ends allows water to drain through the nozzle continuously
- ✓ No pooling at head bases after shutdown: Water pooling around the base of a head after the zone shuts off indicates a failed head seal or a valve that is not closing fully
Supply Line and Leak Checks #
Supply Line Checklist
- ✓ No persistent wet patches between cycles: Any area of the lawn that stays wet 24+ hours after the last irrigation cycle and with no rainfall indicates a below-grade leak
- ✓ No soil undermining near supply line paths: Sunken soil or channels near known supply line routes indicate a leak that has been running long enough to move soil
- ✓ Valve boxes dry inside: Open each valve box and confirm no standing water inside. Flooded valve boxes accelerate solenoid and wiring corrosion
Backflow Device and Pressure Checks #
Backflow and Pressure Checklist
- ✓ Backflow device present and visible: Confirm a PVB or other approved device is installed on the main supply line between the meter and the first zone valve
- ✓ No continuous drip from backflow device: Some drip during pressure fluctuations is normal. Continuous dripping when no irrigation is running indicates a worn internal seal
- ✓ No visible cracks or corrosion on backflow device body: Phoenix mineral-heavy water causes scale buildup and occasional freeze-crack damage. Inspect the body for cracks at fittings and joints
- ✓ Zone pressure consistent across all zones: A zone that runs at noticeably lower pressure than adjacent zones indicates a broken head, zone supply line issue, or a partially closed valve
What to Capture for Documentation #
A pre-summer inspection without documentation has limited value for property managers. What to capture and keep:
- Photo of the controller screen showing the active summer program settings. This confirms the schedule was verified and records the settings at inspection date.
- One photo per zone taken while the zone is running, showing overall coverage pattern. A single photo per zone takes 2 minutes and creates a visual baseline for comparison if coverage problems emerge later in the season.
- Photo of the backflow device showing its presence, condition, and position. This documents compliance status at the inspection date.
- Written findings list with any items flagged for repair. Items not flagged are confirmed as passing. Items flagged should be categorized as immediate repair (before next cycle), near-term repair (before peak heat), or deferred (next routine service).
Our irrigation diagnosis service includes all of the above as standard deliverables: a written report, per-zone photos, backflow documentation, and a prioritized repair list.
For Phoenix properties, we offer irrigation diagnostics throughout the metro area. Property managers scheduling pre-summer inspections across multiple addresses use our single-point coordination to confirm all properties are checked before June 1.
Full 12-item inspection with written report and same-day photos.
Scheduled within 48 hours. Same-cycle repairs where possible. Pay after completion. Over 100,000 jobs completed.
Frequently Asked Questions #
How often should a rental property irrigation system be inspected? #
Once per year before summer demand peaks is the standard. Properties in Phoenix and Dallas where irrigation failure causes turf damage within 48 hours in summer warrant an annual May inspection.
Properties in Denver and Seattle with less peak heat pressure can extend to every 2-3 years if no symptoms are present. At property turnover, an inspection documents the system’s state before the new tenant occupies the property.
Can a property manager complete this checklist without a technician? #
The controller and visual zone-run checks can be completed by anyone with access to the controller. Pressure assessment, backflow device evaluation, and supply line checks require more technical knowledge. For documentation purposes, a professional inspection report carries more weight than a self-performed checklist in the event of a dispute.
What is the most commonly missed item on an irrigation inspection? #
Head-to-head coverage verification. Most inspectors confirm that heads are functioning but do not walk each zone to confirm that each head’s spray arc reaches the next head. Coverage gaps are invisible until turf starts showing dry strips in summer heat, typically 7-10 days after the gap becomes visible as stress.
What should I do if the inspection finds the backflow device is missing or failed? #
A missing backflow preventer is a code violation in most markets. Dispatch a licensed contractor immediately. In Phoenix, a PVB replacement requires a permit. Do not run the irrigation system without the backflow device in place, as this configuration creates the potable water contamination risk the device is designed to prevent.
Every system checked. Every zone documented. Every finding reported.
Pre-summer irrigation inspections across your full portfolio. Written report and same-day photos delivered to you directly. 48-hour scheduling, pay after completion.
