Common Plumbing Problems

High Water Bills: Causes & Fixes

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Why Is My Water Bill So High?

Do you have a water bill that’s much higher than last time? Usually it’s not because you used more water. It’s water leaking somewhere you can’t see. A hidden leak, a toilet that keeps running or a dripping tap can waste a lot of water without you knowing.

The problem is you usually don’t notice until the bill turns up. It’s easy to think it’s a one-off, but a leak won’t fix itself. The longer it runs, the more you pay, and small leaks can turn into burst pipes and water damage. Get it sorted early and you stop the waste before it costs you a lot.

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Common signs

How To Tell If You Have a Gurgling Drain

Running Water Sounds

You hear water running or hissing in the walls or pipes even when every tap in the house is turned off.

Dripping Taps Or Toilets

A tap that keeps dripping or a toilet that won’t stop running quietly wastes water all day and night.

A Sudden Jump In Your Bill

Your water bill goes up a lot, but nothing about how you use water has changed.

Damp Spots Or Patches

You notice wet walls, soggy spots in the yard or a patch of grass that’s greener than the rest.

The Meter Keeps Moving

Turn off all the water in your home, and the water meter is still ticking over.

Common causes

What Causes a High Water Bill?

Leaking Taps and Toilets

A dripping tap or running toilet might not seem like much, but it wastes water all day and night without stopping. Over a few months, this quietly adds up to a lot of extra water and a much bigger bill.

Hidden Leaking
Pipes

Some leaks happen in pipes you can’t see, like under the floor, in the walls or underground. Water keeps escaping the whole time, and you don’t notice until the bill shows up or damp patches appear.

Tree Roots in Your Pipes

Tree roots go looking for water, and your pipes are an obvious target. They get into small cracks and grow inside the line, which can lead to leaks and a steady loss of water you’re still paying for.

Is it a serious problem?

A high water bill is easy to brush off, but it’s usually a sign that water is leaking somewhere it shouldn’t be. Most of the time, it is a hidden leak, a running toilet, or a worn-out tap that is wasting water without you knowing. The thing is, it won’t fix itself, and it only gets worse over time.

That small leak you can’t see can slowly turn into damp walls, soggy floors or a burst pipe down the track. Leave it long enough and the constant water can damage your home and push your bills even higher. Sorting it early saves you money and stops a small problem turning into a big repair.

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DIY Checks You Can Try

Before you pick up the phone and call a plumber, there are a few things you can try yourself. They’ll help you work out whether it’s something small or something that needs a professional.

Check every tap in the house for drips, including the laundry and outside taps.
Listen for a toilet that keeps running or refilling when nobody’s used it.
Put a few drops of food colouring in the cistern and see if it leaks into the bowl.
Look around for damp spots, water stains or patches of grass that are greener than the rest.
Turn off all the water in your home, then check if the water meter is still ticking over.
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