You open your latest water bill, expect the usual amount, and instead find a figure that makes you do a double take. Nothing has changed at home, the family has not suddenly started taking longer showers, and yet the bill has jumped. For many Perth homeowners, an unexplained spike like this is the first and only warning sign of a hidden water leak quietly running behind a wall, under a slab or somewhere out in the yard. The good news is that these leaks can be found and fixed. The key is knowing what to look for and acting quickly.
A hidden leak rarely announces itself with a burst pipe and a flood. More often it shows up as a collection of small clues that are easy to overlook. Watch out for these:
- A higher water bill without any change in how much water you use.
- Damp or discoloured patches on walls, ceilings or floors, sometimes with paint bubbling or skirting boards swelling.
- The sound of hissing, trickling or running water when every tap and appliance is switched off.
- A persistent musty smell, or mould appearing on walls that never used to have it.
- Water pressure that has dropped noticeably across the house.
- Unexplained damp spots on paving, or a patch of lawn that stays green and soggy through a dry spell.
A single one of these on its own may be nothing, but two or three together are a strong sign that water is escaping somewhere it should not be.
The five-minute test you can do yourself
Before you call anyone, you can do a simple check using your own water meter. Turn off every tap inside and outside the house and make sure no water-using appliances, such as the dishwasher or washing machine, are running. Write down the exact reading on your water meter, then wait about fifteen minutes without using any water at all. Check the meter again. If the numbers have moved, water is being used somewhere even though everything is switched off, and that almost always means a leak. It is a quick test that gives you real evidence to act on.
Some of the most costly leaks happen out of sight, under the concrete slab your home sits on. A slab leak can be deceptively small yet enormously wasteful. A pinhole just a couple of millimetres wide in a copper pipe under a slab can waste hundreds of litres a day. Over a single ninety-day billing cycle that adds up to tens of thousands of litres, which explains how a leak you cannot even see can blow your bill out so dramatically. Other common hiding spots include wall cavities, underground service pipes in the garden, and the joints around old fittings that have corroded over time.
Do not forget about gas
Not every leak involves water. A gas leak is a serious safety hazard, and the signs are different: a distinctive rotten-egg smell, a hissing sound near a gas appliance or line, or a gas bill that has crept up for no obvious reason. If you ever suspect a gas leak, do not ignore it. Avoid using naked flames or electrical switches, ventilate the area, and get a licensed professional to investigate. Plumbdog are licensed gas plumbers, which means the same team you call about a water leak can also safely detect and repair gas leaks, rather than sending you off to find a separate specialist.
Why detection and repair should go hand in hand
Here is something many Perth homeowners only discover the hard way. A lot of leak detection companies will locate the problem and then hand you a report, leaving you to find a separate plumber to actually fix it. That means two visits, two lots of scheduling, and often a frustrating gap while the leak keeps running and your bill keeps climbing. Plumbdog does both. As fully licensed plumbers, they detect the leak and repair it in the one process, for both water and gas leaks. Finding the leak is only half the job, and having the same qualified team carry it through to a proper repair saves you time, money and a great deal of hassle.
What professional leak detection involves
Modern leak detection is far more precise than digging up the garden and hoping for the best. A licensed plumber can use a combination of methods to pinpoint the source without unnecessary damage, including pressure testing the pipework, acoustic listening equipment that hears water escaping inside walls and under slabs, moisture meters, thermal imaging cameras, and controlled isolation of individual sections of pipe. This targeted approach means the problem area can be found accurately, so the repair is smaller, cleaner and less disruptive to your home.
When to pick up the phone
Call a licensed plumber if your meter test suggests water is still moving with everything off, if you notice damp walls or a musty smell, if your pressure has dropped for no clear reason, or if you see paving lifting or lawn that stays wet. Acting early stops a small leak turning into structural damage and keeps your next bill under control.
Get your leak found and fixed in one go
A hidden leak will not fix itself, and every day you wait it wastes more water and more money. If your bill has spiked or you have spotted any of the warning signs above, the licensed team at Plumbdog can detect and repair both water and gas leaks in the one visit, so you are not left chasing a second tradie to finish the job. Find out more or arrange an inspection through Plumbdog Leak Detection Perth and get your leak sorted properly, the first time.










