A quiet cistern-to-pan leak can move a meter without wetting the bathroom floor. Before wider leak detection in Acton, each toilet should be checked as a specific source of continuous or intermittent use. A meter result alone cannot identify which fitting is responsible.
Identify every toilet
List all toilets, including cloakrooms and rarely used rooms. Note periodic refill sounds and look at the back of each pan after the cistern settles.
Use supplier-provided toilet leak strips where available and follow their instructions. Do not mix tests with cleaning products.
Link fitting evidence to meter timing
Photograph the meter at exact times under supplier guidance and record every water use. Note which toilet was last flushed.
Movement records flow, while a ripple in one pan identifies a likely fitting. Keep the two observations linked but avoid claiming volume without measurement.
Repair the clear candidate first
A plumber can inspect the cistern mechanism without a whole-house hidden-pipe search. Do not adjust floats or valves if safe isolation is uncertain.
After repair, repeat both the pan observation and controlled meter interval. If flow remains, other fittings or the supply still need assessment.
Escalate active water
Water outside the pan or cistern, swollen flooring or wet electrics requires prompt action. Take the toilet out of use and isolate only through a known accessible valve.
Provide the completed toilet list when arranging further leak detection in Acton, preventing the same silent losses from being overlooked.
Keep the fitting-specific evidence
Label every video and strip result with the toilet location and time since flushing. In larger households, this prevents separate periodic refills being combined into one apparent continuous leak.
Retain the repaired mechanism description and final dry pan observation. If consumption stays high, the documented toilet outcome allows the next investigation to move on rather than retest an already resolved fitting.
Check the outcome over a comparable interval
After the toilet repair, wait until the cistern has completed its normal refill and confirm that the pan remains still. Then repeat the supplier-guided meter observation with the same duration, household instructions and automatic-use list.
If the meter still moves, do not alter the toilet again without new evidence. Preserve the successful fitting check and move to other appliances, internal pipework or the supply. This staged approach prevents one common leak from becoming the assumed explanation for every unexplained litre.
Keep the toilet identity, repair date and later reading on one page. If another toilet develops a similar refill, separate its evidence rather than adding it to the first event. This preserves the link between each fitting and its own outcome.
Further reading
Prepared with AI assistance using the sources listed above. General information cannot diagnose an individual property. Contact us to discuss your circumstances.
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