Guide · 6 steps · ~4 min read
Broken sprinkler head cost.
Quantify the leak. Stop the waste. DIY or call a pro.
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Step 1
Why a broken head shows up as a bill spike
A broken or misaligned sprinkler head can waste 6–25 gallons per minute depending on nozzle type, pressure, and the size of the break. If a zone runs twice daily for 15–30 minutes, one broken head can add hundreds of gallons per day — more than most indoor fixture leaks.
Common breakage causes: lawn mowers, freeze damage, vehicle traffic, aging plastic, or pressure surges. The break often stays hidden until you walk the system during a run or notice a soggy spot that never dries.
Treat the calculator below as an educational estimate. Your actual waste depends on system pressure, nozzle flow rate, and how long the zone runs per cycle.
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Step 2
Interactive waste calculator: select your nozzle type
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Step 3
Walk the system to find the break
Run the zone and walk the full circuit:
- Gusher / geyser: Head completely broken off, lateral cracked, or riser sheared.
- Misting sideways: Nozzle cracked, seal failed, or pressure too high for that head type.
- Soggy low spot: Low-head drainage or a slow underground leak after the zone shuts off.
- Dry zone elsewhere: One broken head can steal pressure from downstream heads in the same zone.
Take photos and note which zone number. If you have multiple broken heads, prioritize the highest-flow nozzles first.
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Step 4
DIY replacement cost vs calling a pro
DIY parts cost: Replacement spray nozzles run $2–8 each; rotor heads $8–25; full pop-up body assemblies $10–30. Add Teflon tape, a small shovel, and a nozzle adjustment tool if you do not have them.
DIY skill level: Replacing a nozzle or top assembly is beginner-friendly if the riser and fitting are intact. If the lateral line is cracked or the valve box is flooded, that is intermediate-to-advanced or pro territory.
Licensed irrigation tech cost: Service calls typically run $75–150 for diagnosis + travel, then $25–75 per head for parts and labor. Lateral line repairs, valve replacements, and pressure adjustments cost more.
When to call a pro: You smell gas near shared trenches, see a sinkhole forming, cannot locate the zone valve, or backflow preventer work is required by code in your jurisdiction.
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Step 5
Prove the fix on your meter
Before the repair: record today's meter reading or portal daily total. After the repair: run the zone once, then compare tomorrow's daily total to your pre-repair baseline.
If daily use stays high after fixing visible breaks, re-run the quiet-house meter test with irrigation off to rule out stuck valves or other leaks.
Meter overnight test -
Step 6
Prevent future breaks
Mark head locations before mowing. Flush lines before the first spring startup to clear debris. Adjust heads so spray lands only on target zones (pavement spray invites damage). In freeze climates, winterize and blow out lines before the first hard freeze.
Consider upgrading aging plastic heads to pressure-regulated models if your system runs above 50 PSI — high pressure accelerates cracking and misting.
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Educational estimates, not professional advice. Sources linked below.
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FAQ
How much water does a broken sprinkler head waste?
It depends on nozzle type, pressure, and break severity. Spray nozzles can waste 6–12 gpm; rotors 3–8 gpm; micro emitters 0.5–2 gpm. One broken spray head running 30 minutes can waste 180–360 gallons per cycle.
Can I just cap the broken head instead of replacing it?
Yes, if you do not need that head anymore. Use a threaded cap or plug on the riser. But if the zone needs that coverage, replace it — capping redistributes pressure and can cause other heads to mist or overspray.
How do I tell if the break is above ground or below ground?
If you see the head or nozzle visibly damaged, that is above ground (easier fix). If the zone runs but you see a wet spot with no visible head or the area floods, the lateral line or riser is likely cracked underground (harder fix).
Do I need to shut off water to the whole house?
No. Most irrigation systems have a dedicated shutoff valve or you can turn off the controller and close the zone valve. Only shut the main if you cannot isolate irrigation.
Will one broken head affect the other heads in the same zone?
Yes. A major break can steal pressure and reduce flow to downstream heads, making them underperform or not pop up fully. Fix the break and other heads may recover.
Should I upgrade to pressure-regulated heads?
If your system pressure is above 50 PSI or you have chronic misting and cracking, yes. Pressure regulation extends head life and reduces misting waste.