We are now servicing!

June 17, 2024
how water leaks occur in homes

The Principle Behind Leaks

A water leak on your property can cause your water bill to skyrocket if not detected and repaired in time. A single leak can result in thousands of litres of water being lost.

water pipes

Most of us might have faced a common problem around the home – water leak issues. These leakages can disturb anyone’s sleep by the continuous noise of water dripping. This noise may distract your focus or can become embarrassing in front of guests. However, in today’s era, everything is possible now to get rid of such leaks with the help of plumbing solutions. There are several ways plumbers can detect water leakages but to pinpoint the origin of the leak it’s best to hire a leak detection company so you can repair the problem right from the source.

Water leaks can occur anywhere in your water supply network and drainage system. But it’s in the toilet that leaks are most likely to happen.

Here are the common areas where a leak usually occurs:

1) Toilet flapper valve:

A toilet will have a leak if its flapper valves are not working properly. The flapper is the rubber valve that sits on top of the flush valve. It seals the flush valve to prevent water from entering the toilet bowl before the toilet is flushed.

If this rubber flapper ages, it can become brittle, warped or cracked. When this happens, water will flow continuously into the toilet bowl from the tank through the valve.

You’ll need only to replace the damaged flapper in most cases. Or you may have to replace the toilet’s filling mechanism to resolve the leak.

2) Flush handle:

Problems with the flush handle can cause significant toilet leaks. For instance, the flush handle, the chain or the level bar may be getting stuck after each flush, so you need to tug at the flush handle after every use.

When this happens, you need to adjust the nut securing the handle in the toilet tank or replace the flush handle itself.

3) Overflow tube:

For a properly working toilet, the water level in the tank should be at the fill line level, about half an inch below the overflow tube. If the water fills up to the point that it spills out the overflow tube, it should be adjusted.

You can turn the adjustment screw to correct the problem or lightly bend down the float arm so that the water can shut off somewhere below the overflow tube.

Overflow tube leaks are often easy to detect. Dripping water may be loud enough to hear from a few meters away. Other toilet leaks are however silent and may be difficult to detect. Silent leaks can cause significant losses before they are found out. You’ll notice however that most of these toilet leaks are easy and rather inexpensive to repair.


These often leak when the rubber or washer is worn out. On your sink, the washer is usually located right under the handle.

water tap leak

With the right tools, it shouldn’t be difficult to replace a worn washer on your sink faucet. You’ll however have to shut off the water at the main shutoff valve or under the sink before you can commence the work.

Concealed leaks

Water leaks can occur in concealed places. These are often hidden in walls or underground and can stay undetected for extended periods of time. Depending on the size of the leaking spot, concealed leaks can waste litres of water every day.


Though not traditionally recognized as a leak problem, condensation can be a damaging form of a concealed water leak. Mild condensation is okay, but when the water or drainage pipes are excessively porous, they can damage your walls, floors, ceilings, and woodworking with time. Consider insulating such pipes to stop or reduce this water loss.

If you know the tell-tale signs of a leaking water system, you can fix it before the water bill skyrockets and keep gallons of water from being wasted.

How will you know when there’s a water leak?

There are several ways to know when there is a water leak in your water supply or drainage system:

a) Look for stains on the ceiling and other surfaces:

Evident signs of wetness, stains or discolouration on the ceilings, walls, floors and woodwork indicate concealed water leaks. There could be a cracked water pipe or damaged joinery somewhere on the walls that are letting water out. And if you see some on the floor, there is a leak underground.

b) Extraordinary increase in water bills:

You’d expect your water bills to go up if the consumption patterns in the family have recently changed. An increased number of people in the family, recent masonry or construction work in the home; the list of reasons can be long and diverse. But if none of these has recently happened and the water bill has increased significantly, you could be losing water to a leak.

c) Food colouring test:

Remove the toilet water tank lid and add a few drops of food colouring in the back of the tank. You can swap food colouring with dye tabs from any home centre in your local area. Wait for around 30 minutes then observe the water inside the toilet bowl. You should not flush the toilet over this time. Any sign of colour in the bowl will be a sign of a leaking toilet. There could be a problem with the flapper or flush handle that lets water (with the colour) come through. Clear water on the other hand is a sign that water is not leaking.

Once you are done with the test, flush the toilet immediately to avoid stains from the dye or food colouring.


It is good to repair underground water leaks immediately or get the drain pipe inspection on time to avoid substantial losses, the best strategy is to have a preventive maintenance check. AUSTEST Pipeline Solutions are here for you to resolve your water leak issues with its advanced equipment services. Contact Austest to get in touch with us and book an inspection today.