Running Toilets & Constant Refilling
What Is a Running Toilet?
Got a toilet that keeps running or refills on its own when nobody’s used it? That means water is leaking from the cistern into the bowl instead of staying put. The part that’s meant to hold the water back has worn out, so it keeps topping itself up.
Usually it’s a worn flapper, a faulty valve or a float that’s out of place. It’s easy to ignore, but a running toilet wastes water every minute of the day. If left unattended, the problem typically worsens rather than improves.
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How To Tell If You Have a Running Toilet
A Constant Running Sound
You hear water trickling or hissing in the toilet even when nobody has flushed it.
The Cistern Keeps Refilling
The toilet tops itself up every so often, as if someone just used it when they haven’t.
A Higher Water Bill
Your water bill goes up, but nothing about how you use water has changed.
Ripples in the Bowl
You notice tiny ripples or a steady trickle of water moving in the toilet bowl.
The Meter Keeps Moving
Turn off every tap in the house, and the water meter is still ticking over.
What Causes a Running Toilet?
A Worn Flapper or Seal
The rubber flapper at the bottom of the cistern wears out over time and stops sealing properly. Once it does, water slips past it into the bowl, which keeps the toilet running and refilling all day long.
A Faulty Fill Valve
The fill valve is the part that tops the water tank back up after a flush. When it wears out or sticks, it doesn’t shut off properly, so water keeps flowing in and the toilet never quite stops.
A Float Set Too High
The float tells the toilet when to stop filling, but if it sits too high, the water rises past the overflow. From there it drains straight into the bowl, which keeps your toilet running for no reason.
Is it a serious problem?
A running toilet is easy to ignore, but it’s usually a sign that something inside the cistern has worn out and needs fixing. Most of the time it’s a worn flapper, a faulty valve or a float that’s out of place. The thing is, it won’t fix itself, and it only gets worse over time.
That constant trickle might not seem like much, but it wastes water all day and night and quietly pushes your bills up. Left alone, a small fault can turn into a bigger one and waste even more water. Sorting it early saves you money and stops a small job 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.
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