Drip Irrigation Care & Inspection Guide
Honest answers on how to inspect drip heads, clean filters, troubleshoot a struggling plant, and keep your warranty intact. In Arizona, irrigation problems kill more plants than heat does.
Get these right and your plants live.
Walk the lines monthly
Run the system manually for 5 minutes and look at every emitter. A 60-second walk catches 90% of irrigation problems before they kill a plant. We've never had a homeowner regret doing this; we've had plenty regret skipping it.
A struggling plant is usually a drip head
Nine times out of ten, when a plant looks stressed in Arizona it's not the plant — it's the emitter. Clogged, popped off, kicked out by a dog, chewed by a rodent, or buried under decomposed granite. Check the drip head before you replace the plant.
Filter cleaning is non-negotiable
Hard Arizona water + drip emitters = clogs. A Y-strainer or disc filter at the valve needs to be flushed every 3 months. Skip it and every emitter downstream starts to fail one by one.
Controllers drift
Power blips, seasonal changes, gardeners with good intentions — controller schedules wander. Verify zones and run times monthly. Underwatering shows up in two weeks; overwatering shows up as root rot in six.
Monthly Routine
Five minutes per zone. Done once a month, this catches almost everything:
- Once a month, manually run each zone for 5 minutes and walk the lines with the system on.
- Look at every drip emitter — water should bubble out, not spray, mist, or flood.
- Tug each emitter gently to check it's seated. Loose emitters pop off in monsoon wind and stay off.
- Clear decomposed granite, leaves, and debris piled over emitters — buried heads can't deliver water where it's needed.
- Flush the system filter (Y-strainer or disc filter at the main valve) every 3 months. Hard water + drip = clogs.
- Verify the controller schedule monthly. Confirm run times, start times, and that the rain sensor (if installed) is connected.
- After a monsoon storm or wind event, do a full walk-through — popped emitters and broken lines are the #1 post-storm issue.
The 10-minute monthly walk-through.
Do this once a month — front yard, backyard, every zone. Each step matches a one-tap log entry below so the work is documented automatically for your warranty file.
- 01
Set the system to manual
1 min · Look for: controller responds
- Open the controller and confirm power, Wi-Fi (if smart), and battery indicator.
- Start Zone 1 in manual mode for 5 minutes.
- Confirm you can hear the valve click open and see pressure build at the box.
Log it as: Checked controller - 02
Walk the zone with water flowing
5 min per zone · Look for: bubbling, not spraying or misting
- Stand at every plant and look at the emitter base.
- Water should bubble out steadily — spraying = broken, misting = high pressure, flooding = wrong GPH.
- Tug each emitter gently to confirm it's seated. Loose heads pop off in monsoon wind.
- Brush back DG, leaves, and mulch covering any buried heads.
Log it as: Walked the drip lines - 03
Flag struggling plants
1 min · Look for: wilt, yellowing, dry root zone
- Any plant looking stressed — check its emitter first, not the plant.
- Confirm at least one (ideally two) working emitters per plant.
- Match emitter GPH to plant size: 0.5–1 small, 1–2 mid, 2–4 large, bubblers for trees.
- Photograph plant + emitter together for the warranty record.
Log it as: Flagged a struggling plant - 04
Inspect the filter at the valve box
5 min · quarterly · Look for: sediment, mineral staining, tears
- Shut the zone off, unscrew the filter cap, pull the screen or disc stack.
- Rinse with a hose until water runs clear; vinegar-soak if mineral-stained.
- Replace the cartridge if torn or permanently stained ($15–25 part).
- Reseat, hand-tighten the cap, run the zone and check for leaks.
Log it as: Cleaned the filter - 05
Scan for leaks and UV damage
2 min · Look for: wet spots, geysers, cracked line
- Look for unexplained wet patches in DG, mud at low spots, or visible spray.
- Inspect any drip line above grade for sun-cracked, brittle sections.
- Cut out and splice — never patch UV-damaged line; patches fail within a season.
- Bury new line 2–3 inches under DG to protect from UV next time.
Log it as: Repaired a leak - 06
Close the loop on the controller
2 min · Look for: schedule matches the season
- Confirm run times match the season (longer in summer, shorter in winter).
- Verify the rain sensor is connected and not bypassed.
- If smart: confirm ET-based / seasonal adjust is enabled, not fixed run times.
- Replace the 9V backup battery every winter — APS/SRP brownouts wipe schedules without it.
Log it as: Checked controller
Drip Head Troubleshooting
Before you replace a plant, replace its emitter. Here's how to diagnose:
- Plant looks wilted? Run that zone manually. Watch the emitter at the base of the plant. No water = bad emitter. Spraying water = broken emitter. Flooding = wrong GPH rating.
- Pressure-compensating emitters (the small round ones with a colored top) come in 0.5, 1, 2, and 4 GPH. The wrong rating starves or drowns plants — match emitter GPH to the plant's water need, not what's in the bag at the store.
- Clogged emitters can be cleaned: pull the emitter, flush with water, soak in vinegar for an hour, reinstall. Faster to just replace at $0.50 each.
- If multiple emitters on the same line fail at once, it's almost always the filter — clean it first before replacing emitters.
- Drip line that's cracked from sun exposure (UV damage) needs to be replaced, not patched. Patches fail within a season. Bury the new line ~2 inches under DG to protect it.
- Tree bubblers should fill the basin within 5 minutes. Slow fill = clogged bubbler or low pressure at the zone.
Filter Cleaning & Controllers
The two maintenance items that prevent the most callbacks:
- Locate the filter at the irrigation valve box — it's the cylinder between the valve and the lateral line.
- Shut off the zone, unscrew the filter cap, pull the screen or disc stack, rinse with a hose, reseat.
- If the screen is torn or the discs are stained brown and won't rinse clean, replace the filter — $15–25 part.
- Smart controllers (Rachio, Hunter Hydrawise, Rain Bird LNK) should be set to ET-based watering or seasonal adjust, not fixed run times.
- Confirm the rain sensor (wired or wireless) is operational — Arizona monsoons are the easiest free water you'll ever get.
- Battery-backup on the controller matters in Arizona — APS/SRP brownouts wipe schedules. Replace the 9V every winter.
What to Avoid
These shorten system life or void manufacturer warranties:
- Letting a struggling plant die without checking the emitter first
- Skipping the quarterly filter flush
- Running drip emitters at line pressure (over 30 PSI) without a pressure regulator — blows emitters off
- Using non-pressure-compensating emitters on long runs (slope or distance) — far emitters get nothing
- Patching cracked drip line — replace it; patches always fail
- Burying drip line deeper than 2–3 inches — emitters need to be reachable
- Mixing emitter brands and GPH ratings on the same line without tracking which is where
- Letting the controller battery die — schedules reset to defaults that don't match Arizona
Plants don't have a warranty without irrigation proof.
Every plant warranty — AE's, a nursery's, a landscape designer's — is conditional on adequate irrigation. So is every smart controller warranty and every drip-line warranty. Documentation is what makes those warranties enforceable.
Smart controllers carry warranties too
Rachio, Hunter, Rain Bird, and Toro controllers carry 2–5 year warranties on the unit. Documented installation date, surge protection, and operational logs are what makes a warranty claim succeed.
Plant warranties depend on irrigation proof
Any landscape plant warranty (AE's or a nursery's) is conditional on adequate irrigation. If a plant dies and we can't see a maintenance log showing the emitter was working, the warranty doesn't cover it.
Filter neglect voids manufacturer claims
Drip manufacturers (Netafim, Rain Bird, Toro) explicitly require filtration and periodic cleaning. Clogs from skipped filter maintenance are not a warranty defect.
Keep receipts for replacement parts
Emitters, drip line, filters, controllers — save receipts. If a system-wide failure traces back to a non-spec component, the receipt proves what was actually installed.
A drip & irrigation log built into your portal.
Do any of these and the warranty is gone.
- No pressure regulator on a drip zone running over 30 PSI
- Skipping the quarterly filter cleaning
- Using mismatched or non-spec emitters across the system
- Damage from digging, edging, or vehicle traffic over buried drip line
- Controller installed without surge protection in Arizona's monsoon belt
- Plant loss without documented irrigation troubleshooting
- Failure to provide a maintenance log when a claim is filed
Frequently asked irrigation questions.
Want AE to audit and tune your irrigation?
Every zone tested, every emitter checked, filters cleaned, controller programmed for Arizona seasons, rain sensor verified. Most homeowners save the cost back in plant replacements and water bills within one season.
Request Irrigation Audit