"Fantastic service. Found leaks I did not even know were there. Justin is a retic super hero."
Reticulation Karnup
Karnup sits squarely inside our service area: 9 local jobs done, with our Mandurah-region crews nearby every week.
✓ 24,000+ jobs completed across Perth · 9 jobs completed in Karnup and counting · ★ 4.7 from 230 Google reviews
Call (08) 6263 4644 to book a repair, or book a site assessment for a new system.
Your local Karnup reticulation team
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.
Verge and streetscape watering rules sit with the City of Rockingham — worth checking before verge retic work, and we can advise on what your council allows. Yellow Spearwood sand over limestone drains freely, so shorter, more frequent cycles with a wetting agent beat one long soak. The shallow limestone also makes trenching for repairs harder than it looks. 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. 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. Karnup is roughly 35 km from our Jandakot depot — same-week bookings are the norm, not the exception.
We’re Waterwise-endorsed and Irrigation Australia members, every job is backed by a full warranty, and we’re Perth’s most-reviewed retic specialist (rated 4.7 from 230 Google reviews).
Reticulation help in Karnup & nearby
We also look after Secret Harbour, Golden Bay, Port Kennedy, Singleton, Madora Bay, Lakelands, Warnbro and the wider Perth metro. Read our pricing guide or call to get started.
Nearby: Secret Harbour · Golden Bay · Port Kennedy · Singleton · Madora Bay · Lakelands · Warnbro
What does Karnup’s soil and water mean for your retic?
Soil — Spearwood sands. Free-draining yellow sand with limestone often close beneath — great drainage, poor moisture holding. Frequent light watering suits it, and retic trenching can hit caprock.
Groundwater & bores. Sandy soils over shallow groundwater make this classic garden-bore territory; running retic from a bore takes garden watering off the scheme-water bill. Bores follow the same 2-day roster and winter switch-off as scheme users.
Rainfall — about 865mm a year. Roughly 865mm a year here (Halls Head), with about 80% of it falling May-September — the long dry rest of the year is why controller programming and coverage checks pay for themselves.
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)
What kind of retic work do we do in Karnup?
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.
Reticulation Repairs in Karnup
Broken pop-ups, a leaking solenoid, dry patches or a controller that’s lost the plot? Our fully-equipped technicians diagnose and fix most Karnupfaults on the spot. We don’t quote repairs over the phone – just call us and we’ll book a visit.
New Systems in Karnup
Putting in a new lawn or upgrading a tired system? We design and install fully automated, waterwise reticulation for Karnuphomes. Book a paid site assessment (fully credited to your install if you proceed) and we’ll quote the job.
Hear From Our Happy Customers...
"Very good assistance by George on time efficient genial and respectful doesn’t get any better! Highly recommended"
"Jakob was incredibly knowledgeable, demonstrated common sense and a friendly style. He worked quickly and efficiently, even ducking off to grab other equipment. Thank you."
"Seamless!! My very old(20+ years)retic nightmare became manageable and serviceable once again. Thankyou Dylan"
"Dylan was great and highly knowledgeable. Had identified the problem in a couple of minutes and my system was up and running within 30mins"
"Very knowledgable, friendly and professional. Thanks for your work, George!"
Reticulation Karnup FAQs
Generally yes — Karnup sits over accessible groundwater, which is why garden bores are common here. Bore water isn't metered like scheme water, so a bore can dramatically cut the running cost of keeping lawns and gardens alive. We install, service and repair bores and pumps; ask us whether your block is a good candidate. 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.
Yellow Spearwood sand over limestone drains freely, so shorter, more frequent cycles with a wetting agent beat one long soak. The shallow limestone also makes trenching for repairs harder than it looks. We factor this into zoning, run times and sprinkler selection on every Karnup job — it's the difference between a green lawn and a water bill.
The Water Corporation roster applies across Karnup like the rest of Perth — two watering days a week based on your address (bores included, since the 2022 roster change), and the winter sprinkler switch-off runs June through August. We set every controller we touch to the correct roster before we leave.
Yes — we cover all of Karnup and the surrounding suburbs for reticulation repairs, servicing and new system installations.
We don't quote repairs over the phone — every system and fault is different. Call us and we'll book a technician to diagnose and fix it on site; if a larger job needs parts ordered, we'll give you an estimate before we proceed.