How to Find & Turn Off Your Water Mains in Perth
To turn off your water mains in Perth, find your water meter — usually in a green or black box in the ground near the front boundary of your property — and turn the main stop tap next to it clockwise until it stops. That shuts off water to the whole property. For a single leaking tap or toilet, you can instead close the small isolation valve on the pipe at that fixture. Knowing how to do this before an emergency can save you from serious water damage.
Where is my water meter in Perth?
In most Perth homes, the Water Corporation meter sits near the front of the property, close to the street or footpath boundary. Look for:
- A rectangular green, black or blue plastic box set into the ground, often near the front fence or verge
- A concrete or metal cover in older properties
- The meter itself — a dial or digital display that records your water use
Lift the lid (you may need to clear soil or leaves) and you'll see the meter and, beside it, the tap that controls your supply. It's a good idea to locate this on a calm day, not while water is gushing through your kitchen.
If you live in a unit, townhouse or apartment, your setup may be slightly different — there could be a shared meter bank with individual shut-offs, or a meter in a common area. If you're not sure which one is yours or where it is, it's well worth asking your strata manager or a plumber to show you before you ever need it. A minute of preparation now can save a flooded home later.
How to turn off the main stop tap
Right next to the meter is your main stop tap (also called the isolation valve or main shut-off). To turn off your water:
- Identify the tap. It's usually a small lever or a round tap-style handle on the pipe on the house side of the meter.
- Turn it clockwise (righty-tighty) until it stops if it's a round handle, or turn a lever a quarter-turn so it sits across the pipe.
- Check it worked. Turn on a tap inside — the flow should quickly drop to nothing.
If the tap is stiff, don't force it so hard that you snap it. If it won't budge or leaks when turned, that's something to have a plumber look at before you need it in earnest. Older stop taps can seize up from years of never being used, and the last thing you want is to discover that during a burst. A gentle test turn every so often keeps it working — turn it off, confirm the flow stops inside, then turn it back on.
Do I have a stop tap inside the house?
Some Perth homes also have an internal or near-house shut-off — often where the water line enters the property, in a garden bed by an external wall, or in a garage or laundry. If yours does, it can be quicker to reach in an emergency. Take a minute to find it and label it so everyone in the household knows where it is.
Isolating a single fixture instead
You don't always need to cut water to the whole house. Most individual fixtures have their own small isolation valve so you can stop water to just that spot and keep the rest of the house running:
- Toilet: a small tap on the water line where it meets the cistern, usually low on the wall behind or beside the toilet.
- Basin, sink or vanity: isolation valves on the pipes underneath, inside the cabinet.
- Hot water system: a valve on the cold water inlet to the unit.
- Washing machine and dishwasher: taps on the supply hoses.
Turn these clockwise to close. This is handy for a leaking tap or a running toilet — you can shut it off and still shower and use the kitchen. If you're dealing with a leaking fixture, our tap and toilet repairs can sort it out.
One thing to check: not every home has a working isolation valve at every fixture, particularly in older properties. If you go looking and can't find one — or the one that's there is seized — that's worth flagging with a plumber. Having a functioning isolation valve at each toilet and vanity means a future leak can be contained to that one spot in seconds, without shutting off water to the whole house.
Why knowing this matters
In a burst or leaking pipe situation, every minute counts. Being able to reach the main stop tap and shut it off fast can turn a flooded home into a minor spill. It's one of the most useful things you can know as a homeowner or renter, and it takes two minutes to learn.
Once the water is off, the next steps are to drain the lowest tap, contain the damage and call for help — our guide on what to do in a plumbing emergency walks through the rest. And if you're mid-burst right now, follow the burst pipe emergency steps.
A quick checklist
- Find your water meter near the front boundary today, before you need it
- Locate the main stop tap beside it and check it turns freely
- Note any internal or fixture isolation valves
- Make sure everyone in the household knows where they are
- If a tap is seized or leaking, get it serviced
Stop tap seized or leaking, or not sure where your mains is? Call our licensed Canning Vale plumbers and we'll check it over.
Frequently asked questions
Where is my water mains shut-off in Perth?
It's next to your Water Corporation meter, which is usually in a green, black or blue box set into the ground near the front boundary of your property. Lift the lid and you'll find the meter and the main stop tap beside it.
Which way do I turn the water mains off?
Turn a round-handled stop tap clockwise (righty-tighty) until it stops, or turn a lever valve a quarter-turn so it sits across the pipe. To confirm it worked, open a tap inside — the flow should drop to nothing within a few seconds.
Can I turn off water to just one tap or toilet?
Yes. Most fixtures have their own small isolation valve — behind the toilet, under the sink, or on the hot water inlet. Turn it clockwise to shut off water to that fixture only, so the rest of the house keeps working.
What if my stop tap won't turn or is leaking?
Don't force it hard enough to snap it. A seized or leaking stop tap should be repaired by a licensed plumber before you need it in an emergency, so you can rely on it to shut off the water quickly when it counts.