Hidden Toilet Cistern Leaks in Sydney
Hidden toilet cistern leaks in Sydney: no hissing, no running, no puddle, just a water bill that makes no sense.
Tell us what's happening
The short answer
A cistern slipping water into the pan between flushes is a common hidden leak, and usually one of the easier ones to fix.
How it works
Step 1: Call or book online
Tell us what is happening. We ask the right questions and book a time that suits you.
Step 2: We find the cause
A licensed plumber diagnoses it properly, with a drain camera, leak detection or a pressure test where it helps.
Step 3: A fixed price, agreed first
You agree the price before any work starts. We quote the job, not the hour, so there are no surprise charges.
Step 4: Done right, guaranteed
We finish the job, clean up, and back our workmanship with a lifetime labour guarantee.
Step 5: You know the price first
The figure for the whole job, in writing, before anyone starts. That figure is what turns up on the invoice.
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Questions and answers
Put a piece of dry toilet paper at the back of the bowl after it has settled. If it gets wet before the next flush, the cistern is leaking. A few drops of food colouring in the tank is a second check.
Yes. Sydney Water says a constantly running toilet can lose thousands of litres a day, and even a slow seep runs every hour of every day until it is fixed.
Usually not. Most hidden cistern leaks are a worn seal or a tired valve, replaced in the cistern you already have. A new cistern only makes sense when the tank is cracked or the parts are no longer made.
The same tests apply, the paper test and the meter. We reach the valves through the button plate, and check the cavity for water while we are there.
No. It rinses away with a flush. Avoid coloured cleaning products, which can harm the seals.
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