10 signs your reticulation needs repair (and what it costs)

If a station is dry, a sprinkler is geysering, or the controller display is blank, the symptom usually points to a small list of probable causes. This page walks through the ten most common faults Perth homeowners report, what each one tends to mean, and a realistic cost band to fix it.

Most single-fault call-outs in Perth land in the $250-$400 range. Bigger jobs (mainline leaks, controller replacements, multiple solenoid swaps) push into $500-$900. Anything quoted above $1,200 for a single visit deserves a second opinion.

1. A dead zone - one station won't turn on at all

What you see: You run the controller in test mode. Stations 1, 2, 3 fire. Station 4 - nothing. No sound, no water, no twitch.

Likely cause: Failed solenoid coil, broken wire to that solenoid, or a controller output that's blown for that station.

DIY check: Swap the wire for station 4 with station 1 at the controller. If station 4 sprinklers now fire when you run station 1, the controller output is fine and the fault is downstream (solenoid or wire). If they still don't fire, the controller channel is dead.

Cost band: $220-$380 for solenoid replacement including parts. Controller repair often runs higher because diagnosis takes longer than the swap.

2. Hissing valve box, even when nothing's running

What you hear: A constant low hiss from the valve box, sometimes a faint whistle. The lawn around it may be wetter than the rest.

Likely cause: A solenoid is partially open - either grit under the diaphragm, a perished diaphragm, or a stuck manual bleed screw.

DIY check: Open the box, find the hissing valve, and cycle the manual bleed (usually a small screw or lever on top of the solenoid). Sometimes a single open-close-open cycle flushes grit and the hiss stops.

Cost band: $180-$300 if it's a diaphragm rebuild. $250-$380 if the whole solenoid is replaced.

3. Controller won't turn on at all

What you see: Blank display, no LEDs, dial does nothing.

Likely cause: Tripped GPO, blown internal fuse, dead 9V backup battery masking a mains issue, or a fried transformer (common after Perth summer power surges).

DIY check: Confirm the GPO is live (plug a phone charger in). Check the breaker on your switchboard. If both are fine and the controller is still dead, it's an internal fault.

Cost band: $80-$150 for a transformer swap on most controllers. A full controller replacement runs $350-$900 depending on station count and whether it's a Waterwise-endorsed smart controller.

4. Low pressure on one or two stations

What you see: Station 1 sprinklers throw 4 metres. Station 5 sprinklers dribble out and the rotors don't rotate.

Likely cause: Partial blockage at the solenoid (grit, calcium), a kinked or pinched lateral somewhere underground, or a partially closed isolation valve upstream.

DIY check: Open the solenoid manually. If pressure is still low, the restriction is downstream in the lateral pipework. If pressure is fine with the solenoid bypassed, the solenoid needs a clean or rebuild.

Cost band: $220-$350 for solenoid clean/rebuild. Lateral blockage diagnosis runs $300-$550 depending on how much excavation is needed.

5. A geyser - water shooting straight up

What you see: Where a pop-up sprinkler used to sit, there's now a 2-metre fountain.

Likely cause: The riser or the pop-up body has snapped off, usually from a lawnmower wheel, a stake, or freeze-thaw (rare but real in the Perth Hills).

DIY check: Find the snapped riser. If it's a clean break above the lateral, you can sometimes swap a new sprinkler body on yourself with a $15 part from Bunnings.

Cost band: $180-$250 if it's a clean riser replacement. $280-$400 if the lateral pipe itself is cracked under the sprinkler.

6. Persistent swamp over a valve box

What you see: The grass directly over the valve box is permanently boggy. Walk on it and water squelches up.

Likely cause: A leaking solenoid (slow internal seep), a cracked manifold fitting, or a leak in the mainline feeding the box.

DIY check: Shut the isolation valve upstream of the box (if you have one). Wait 24 hours. If the box dries out, the leak is at or after the isolation. If it stays wet, the leak is upstream on the mainline.

Cost band: $220-$400 for a manifold fitting or solenoid leak. Mainline leak repairs typically run $400-$700 once excavation is included. See the leak detection guide if the leak isn't obvious.

7. Solenoid clicks but no water flows

What you hear: A clear click from the valve box when the station starts. But no sprinklers fire and no water sound after the click.

Likely cause: The solenoid is energising (the click confirms electrical is fine) but the diaphragm isn't lifting. Usually a perished diaphragm or seized plunger.

DIY check: Manually bleed the valve. If sprinklers fire when bled but not on the electrical signal, the plunger is stuck. If they don't fire even on manual bleed, you've got a blockage downstream.

Cost band: $220-$320 for diaphragm or full solenoid rebuild.

8. Rain sensor stuck triggering

What you see: The controller says "rain sensor active" or "skip" mode is on, but it hasn't rained in two weeks.

Likely cause: The cork or disc inside the rain sensor has stayed swollen, or birds have nested on the sensor housing.

DIY check: Climb to the sensor (usually on a fence or eave). Pop the cap. If it's full of cobwebs or a wasp nest, clean it out. If the cork disc inside looks permanently swollen, the sensor needs replacing.

Cost band: $120-$220 for a sensor swap. Less if you bypass the sensor wire at the controller while you wait for a replacement.

9. Bore pump short-cycles

What you hear: The bore pump kicks on for 20 seconds, off for 5, on for 20 seconds, off for 5. Repeats indefinitely.

Likely cause: A failing pressure tank (waterlogged bladder), a leak somewhere in the line bleeding pressure, or a pressure switch set too tight.

DIY check: Check the pressure tank's air valve (usually a Schrader valve on top). With the pump off and system depressurised, it should read 2 PSI below the pump's cut-in pressure. If it reads zero, the bladder is shot.

Cost band: $280-$550 for a pressure tank replacement. Pump short-cycling left unfixed kills the pump motor in months, so don't ignore it.

10. The water bill spiked but everything "looks fine"

What you see: The bill is up 30-100% versus the same quarter last year. Garden looks healthy. No obvious geysers. No swamps.

Likely cause: A slow leak somewhere underground - cracked lateral, leaking solenoid, mainline pinhole. The water is going somewhere; in sandy Perth soil, it can disappear straight down without surfacing.

DIY check: Shut off every internal tap and appliance. Check the water meter. If the dial is still turning, the leak is in the system (could be retic or could be inside). Then shut the retic isolation valve. If the meter stops, the leak is in retic.

Cost band: $220-$650 typical for leak detection in Perth. Repair on top depends on where the leak is and how much excavation is needed.

Quick fault-to-cost reference

Symptom	Likely cause	Typical cost
Dead station	Solenoid or wire fault	$220-$380
Hissing valve box	Stuck/leaking solenoid	$180-$300
Blank controller	Transformer or controller failure	$80-$900
Low pressure (one zone)	Solenoid restriction or lateral blockage	$220-$550
Geyser sprinkler	Snapped riser or pop-up	$180-$400
Swamp over valve box	Manifold or mainline leak	$220-$700
Solenoid clicks, no water	Diaphragm or plunger	$220-$320
Rain sensor stuck on	Sensor failure	$120-$220
Bore short-cycling	Pressure tank bladder	$280-$550
Bill spike, no visible leak	Underground leak	$220-$650+

When to DIY vs call an installer

DIY is reasonable for:

• Swapping a snapped pop-up body (parts cost $15-$30).
• Cleaning a rain sensor.
• Re-programming a controller that lost its days after a power cut.
• Resetting a tripped GPO.

Call an installer for:

• Anything involving the mainline (the pressurised pipe before the solenoids).
• Solenoid replacements (you can DIY but pipe-thread leaks are easy to introduce).
• Controller replacements (wiring multiple stations and a smart-controller pairing is fiddly).
• Anything where you can't find the leak after a meter test.

If you're calling, use a Waterwise-endorsed installer - they're accredited by Water Corp and your job is eligible for the Waterwise Irrigation Rebate if it includes a smart controller upgrade.

FAQ

How much does a typical retic repair cost in Perth?

Most single-fault visits land in the $250-$400 range, parts included. Bigger jobs (mainline repairs, full controller swaps, multi-solenoid jobs) run $500-$900.

Can I get a quote before they show up?

Honest installers will give you a call-out fee and an hourly rate up front. Diagnostic time is hard to quote without seeing the system. If someone quotes a flat repair price sight-unseen, be cautious - they're either lowballing to get the job or hedging by quoting high.

Will my home insurance cover a retic repair?

Almost never. Reticulation is treated as garden infrastructure, not the home itself. Insurance may cover water damage to internal structures caused by a mainline leak under the slab, but the retic repair itself is on you.

Is there a callout fee on top of the repair?

Usually yes, $80-$150 in Perth metro. Some installers waive it if you go ahead with the repair.

How do I find an installer in my suburb?

Use the installer listing filtered by your suburb.

Are Waterwise-endorsed installers more expensive?

On average, no. The endorsement requires annual training but doesn't dictate pricing. You get a better-trained tradesperson at the same market rate, and your job becomes rebate-eligible if you upgrade the controller.

What if the installer says I need a whole new system?

Get a second quote. Full retic replacement on a standard Perth block runs $3,500-$8,000. That's a real job sometimes, but it's also the kind of recommendation that benefits from a sanity check.