Step 1.
Wait at least 30 mins after the last flush.
Step 1.
Wait at least 30 mins after the last flush.
Step 2.
Wipe the back of the bowl dry.
Step 3.
Pop a dry sheet of toilet tissue on the back of the bowl.
Step 4.
Come back 3+ hours later. Wet or torn tissue? You have a leaky loo!
75% of Cambridge Water customers say they’d check their loos at the start of each month**
What to do if you find a leak
First things first – don’t worry! In fact, it’s good news, as it means you’re about to start saving water and money – potentially up to £584* a year.
Research shows people in Cambridgeshire often fix their own, and we can show you how. But if it’s not something you’re comfortable trying, or can’t fix it on your own, it’s usually a quick job for a plumber.
1st of the month – check your loos
If you’ve got more than one loo, it’s not unusual to have more than one leak – and dual flush toilets are the worst culprits. A leak can start out of the blue and be hard to spot, which is why a monthly check is such a good idea.
Can we check our loos every month, to stop wasting money and help protect local chalk streams? Yes We Cam!
Myth: A trickle in the toilet can’t waste much water
Fact: They can lose up to 400 litres a day!
*Based on an average dual-flush toilet losing up to 400 litres a day in a metered household, using water costs of £0.003998 per litre. View our latest charges. View Anglian Water's standard charges for sewerage services. **Survey of 621 Cambridge Water customers, 2026.