Laundry diverter
A WaterMark-certified valve on the washing machine outlet, a filter and one drip zone under a bed. The small job that most houses should start with.
from $590installed, one drip zone
Greywater systems · Perth's south-east
Greywater to your garden,Armadale to Canning Vale.
Five loads of washing a week is 300 litres of garden water going down the sewer. We tell you which system your house needs, what it may water, and the installed price — before you buy the wrong box.
Licensed plumbers, Kelmscott, since 2012
WaterMark-certified diverters only
20-minute site look, free
What we install
Installed prices, drip line included
Every price below is the system fitted, switched and running — valve, filter, drip line under the bed and the handover. The only thing that moves it is how many beds your water can carry.
Bathroom + laundry system
Shower, bath, basin and laundry into one gravity diversion line, with two drip zones. Sized for a family house with the garden below the outlets.
from $1,650installed, two drip zones
Extra drip zone
One more bed of sub-surface drip line, laid under the mulch and tied into the system. We add one per 600 litres a week your house sends.
$160per zone
Treated greywater system
A tank that collects and treats the water. Worth it for some houses and not most — the proof card below says why before you ask us to quote one.
from $6,900after a site visit
Filter and line service
Filter cleaned, drip line flushed, emitters checked, the garden/sewer switch tested. For your system or one somebody else put in.
from $140per visit
Site look
Twenty minutes at your place: where the outlets are, which way the ground falls, which beds are worth watering. You get the system and the price in writing.
$0no obligation
Your house, your garden
What your house can send to the garden
System you need
Bathroom + laundry system
Installed
$1,810
- A week
- 1,620 L
- A year
- 84.2 kL
- Drip zones
- 3
Our planning figures, not a meter reading: 60 L a wash, 45 L a person a day from shower and bath, one drip zone per 600 L a week.
Your house
- Bathroom + laundry system, installed, 2 zones included
- $1,650.00
- Extra drip zone, 1 × $160.00
- $160.00
- Installed price
- $1,810
1,620 L a week needs 3 zones at 600 L each — about 540 L a week to each bed.
The cheaper box, same house
Laundry diverter · 360 L a week · 1 zone
$590$1,220 less
Not a like-for-like swap: it sends 360 L a week, not 1,620, so it waters one bed instead of three. If one bed is all you want to keep alive, it is the right box.
A $6,900 treated system still waters the same beds
Treatment buys cleaner water, not a sprinkler. Health WA: Treated greywater that is not disinfected may only be reused via subsurface irrigation.
Only a system that also disinfects to Health WA's water quality targets may go on the surface, flush toilets or feed the washing machine — and most gardens do not need that.
On every system here, the kitchen stays on the sewer. Health WA: GDD are not permitted to be fed with greywater from the kitchen.
How it runs
From the laundry tap to a wet bed in four steps
We look before we price
Twenty minutes: where the waste pipes leave the house, which way the ground falls, which beds are worth the water. A garden uphill of the outlets needs a pump unit, and we would rather find that out in your yard than on install day.
You get it in writing
The system, the zones, the beds they go under, and the installed price. If a laundry diverter is enough, the quote says so.
Your council approves it
Your local government approves the installation. We prepare the drawing and product details the application needs, and we lodge nothing on your behalf without you.
We fit it and show you the switch
Valve, filter, drip line under the mulch, and ten minutes on the one habit that matters: sending the water back to the sewer when the soil is wet.
What people said
Three gardens, in their words
“I had a diverter kit in the online cart. They came out, looked at the laundry outlet and said that was all I needed, just fitted properly with the drip line under the veggie bed. $590 and done in a morning.”
Karen L.Armadale — laundry diverter, one zone
“Five of us, two showers going every morning. They put in the bathroom and laundry system with three beds of drip line along the back fence and walked me through the sewer switch twice.”
Tuan N.Harrisdale — bathroom + laundry, three zones
“I asked for a treatment tank so I could run sprinklers. They showed me the Health WA wording and priced what I actually wanted to water instead. Cheaper by a long way.”
Graham P.Byford — bathroom + laundry, two zones
Where we work
Perth's south-east, out of Kelmscott
Sandy plain on the west side, clay and gravel at the foot of the scarp on the east. Which one your block sits on changes how the drip line is laid, which is one more reason we look first.
Eleven suburbs on the map, more on the list
We keep to the south-east so a site look is never a half-day drive for us, and so the drip line we lay is matched to ground we dig in every week.
We install in: Kelmscott · Armadale · Gosnells · Canning Vale · Byford · Thornlie · Forrestdale · Harrisdale · Southern River · Maddington · Seville Grove · Mount Nasura · Camillo · Champion Lakes · Martin · Huntingdale.
Somewhere else in Perth? Ring anyway — if we are not the nearest sensible plumber, we will say so.
Asked on every site look
Six questions before anyone mentions a price
What counts as greywater?
Health WA lists it as the wastewater from showers, baths, hand basins, washing machines, dishwashers, kitchen sinks and laundry sinks — and “It does not include toilet waste.”
A diversion system only takes part of that list. The kitchen and the dishwasher stay on the sewer, which leaves the shower, bath, basin and washing machine: the water in the proof card above.
Can the kitchen sink go on the garden too?
Not through a diverter. Health WA: “GDD are not permitted to be fed with greywater from the kitchen.” Kitchen water carries fat and food, and it is the fastest way to clog a drip line and sour a bed. Some treatment systems take it and some do not; that is a site-visit conversation, and we will not promise it before we have seen the product's approval.
Do I need approval?
Yes. The Code of Practice for the Reuse of Greywater in Western Australia, which Health WA links from its greywater page, says “GDD and GTS require an installation approval from the relevant Local Government”. Your local government approves the installation — we prepare the drawing and the product details the application needs, and we lodge nothing on your behalf without you.
Councils set their own forms and fees, so we do not print one here. Ring yours, or ask us on the site look which one you are dealing with.
What happens in winter?
You flick the switch. Health WA describes a diversion device as having “a hand activated switch or tap to divert the greywater to the garden or the sewer”, and the Code of Practice asks you to “Divert greywater back to sewer (or primary sewage system) in winter and rainfall periods prior to the soil becoming saturated.”
So the system earns its keep from spring to autumn and sits on the sewer setting through a wet winter. We fit the valve somewhere you will actually reach it.
Will it smell?
A diverter should not, because it does not hold water. Health WA says a diversion device “diverts greywater without storage or treatment”, and the Code of Practice is blunt about why that matters: “When untreated greywater is stored, it will turn septic, giving rise to offensive odours”.
The usual culprits are a filter nobody has cleaned or drip line sitting too shallow. Both are what the $140 service visit is for.
Can it go on the lawn?
Not from a sprinkler. Diverted greywater has to go under the surface — the Code of Practice says “at least 100 mm below the surface of soil or mulch” — so a lawn means drip line laid beneath the turf. That is a bigger job than a garden bed and not every lawn suits it. We will tell you which yours is on the site look rather than guess from here.
Book a site look