"Great service very professional staff"
Reticulation Karnup
Karnup sits squarely inside our service area: 9 local jobs done, with our Mandurah-region crews nearby every week. In 2025 we completed 4 of them here.
✓ 24,000+ jobs completed across Perth · 9 jobs completed in Karnup and counting · ★ 4.7 from 236 Google reviews
Call (08) 6263 4644 to book a repair, or book a site assessment for a new system.
9 retic jobs here so far
Whether it's an older system that's started playing up or a new landscape that needs waterwise coverage from day one, we handle the lot — repairs, servicing, controllers, bores and full installations.
The Karnup jobs we've done to date centre on controller work, sprinkler & pop-up repairs and solenoid & valve repairs. Wherever your fault sits, the diagnosis process is the same disciplined one we run on every Perth job.
Verge planting and reticulation rules sit with the City of Rockingham, while watering days come from the Water Corporation sprinkler roster, not the council — worth checking both before any verge retic work. Karnup is roughly 35 km from our Jandakot depot — same-week bookings are the norm, not the exception.
We’re a Water Corporation Waterwise Garden Irrigator and an Irrigation Australia member, every job is backed by our workmanship warranty, and we’re rated 4.7 from 236 Google reviews.
Sand over limestone: what it means for your retic
Soil — Spearwood sands. Yellow Spearwood sand over limestone drains freely, so splitting your watering-day run into two shorter cycles, with a wetting agent, beats one long soak. The shallow limestone also makes trenching for repairs harder than it looks.
Groundwater & bores. This suburb sits on Perth's sandy coastal plain over the superficial aquifer, where garden bores are common and generally productive. Bore water isn't metered like scheme supply, so a serviced bore slashes the cost of keeping gardens green — the standard 2-day roster and June-August sprinkler switch-off still apply.
Rainfall — about 865mm a year. The Halls Head gauge averages ~865mm a year, ~80% of it May through September — dial summer cycles for zero rainfall help and let the winter switch-off do its job.
Sources: DPIRD-064 Soil Landscape Systems (SLIP) · DWER Perth Groundwater Map / Water Corp groundwater areas (band-level) · BOM station 009572 Halls Head climate averages · Water Corporation watering roster (verified Jul 2026)
From our Karnup job book
No sleeve where the Karnup plan said there was one
A Karnup installation had a mainline to get under a driveway, and the plan showed a sleeve. There was no sleeve — not where it was marked, and not anywhere else that could be found.
Rather than break up finished paving, the mainline was thrust-bored under the driveway from one side to the other, which leaves the surface intact. Under a paved driveway that wants to be done dry wherever possible — wet-boring flushes out the bedding sand the pavers are bedded on, and that is how a driveway subsides a season after the retic went in.
A sleeve marked on a plan but never actually installed is a common find, and it is why we check rather than assume. One item was reported rather than repaired: the brass vacuum-breaking check valve on the rear tap is leaking while a tap timer is connected to it, and needs replacing.
The master valve (the main valve that shuts the whole system off) and mainline were installed.
Need the same kind of help? Book a repair or arrange a site assessment.
Retic & sprinkler repairs
Broken pop-ups, a leaking solenoid, dry patches or a controller that’s lost the plot? Our fully-equipped technicians diagnose and fix most Karnup faults on the spot. Repairs aren’t quoted – call us and we’ll book the visit.
Not sure what’s wrong? Try our 5 checks before you call.
New irrigation systems
Putting in a new lawn or upgrading a tired system? We design and install fully automated, waterwise reticulation for Karnup homes. Book a paid site assessment — credited in full to your install if you accept the quote within 30 days.
Hear From Our Happy Customers...
"The team was very professional, easy to deal with and did a great job. Highly recommended."
"Justin the young man who came to fix our problem was solution based, efficient and charming we would get help from Perth Reticulation again"
"Easy and convenient to arrange the service, the technician seemed knowledgeable and he fixed the problem. Based on this experience, I would recommend Perth Reticulation Experts."
"Clinton and the team at Perth Reticulation Experts are very professional and fixed my reticulation with no problems. They explained what they were doing along the way and what the original issue was. As a young woman in her first home I felt I was listened to, the staff are super friendly and happy to go above and beyond to complete 5e job. Would highly recommend."
"Your impressive website and fast follow up after my enquiry made me decide to work with your company, the delivery of the work was second to none with John arriving on time, was efficient and obliging and solved our reticulation problem. I was hesitant at first as I wasn't sure how efficient you would be in containing costs."
Local reticulation questions
Yes for lawn and garden; other materials need a written application. Karnup is in the City of Rockingham. Acceptable materials are allowed to cover 50% of the verge or 10m2, whichever is the greater.
Generally yes — Karnup sits over accessible groundwater, which is why garden bores are common here. That said, two neighbouring blocks can differ on yield and iron content, so it's an assessment rather than a given. Bores, pumps and bore-fed retic are all work we do.
Karnup sits on Spearwood sands. Water moves through it fast, and the sand can turn water-repellent once it dries out. The most common thing we get booked for in Karnup is controller work, so that's where the technician starts. We set run times to deliver about 10mm on each of your two rostered days, and split the run into two cycles inside the same watering window where the soil needs it.
Water Corporation sets Karnup's sprinkler days: check yours with your street number and postcode. In Perth and Mandurah that's two days a week, once before 9am or after 6pm, bores included; elsewhere the roster can differ. The winter switch-off runs from 1 June to 31 August. After it, the Bureau of Meteorology's Halls Head station averages about 83 mm of rain in September and 50 mm in October, close to central Perth's 80 mm.
A controller repair isn't quoted: book the visit and it's diagnosed and fixed on site. An upgrade, say to Wi-Fi, can be quoted without a visit: tell us if your controller is hardwired or plugs into a power point (a photo helps). If it needs an electrician, we arrange one.
Nearby suburbs we service
Secret Harbour · Golden Bay · Port Kennedy · Singleton · Madora Bay · Lakelands · Warnbro and the wider Perth metro, from our Jandakot base. Read our pricing guide or call to get started.