Toilet running, leaking or flushing weak: check it step by step

Safety look

Before any reading: is anything like this on site?

A gas smell at a heater, an appliance, gas piping or anywhere on site
Water from the toilet, its tank or its supply line reaching an outlet, a light, a fan or a panel, in the room or the ceiling below, or standing around powered equipment
Sewage on electrical parts or spreading beyond the bathroom floor, or something toxic or caustic that may be in the drinking water
Water running at the toilet that cannot be stopped at its supply stop, a branch valve or the main
The floor soft, spongy or sagging around the toilet, or the ceiling below it sagging, bulging or holding water
A relief valve or its pipe capped or plugged on a working heater or boiler
A carbon monoxide alarm, or exhaust spilling or soot at a gas or oil appliance

Taken as what you could see, not as a finding that none of these are present.

What decides which causes can apply

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Which causes can apply depends on what the toilet does. This card is for a toilet with a tank, a fill valve and a flapper.

Nothing on this page is saved anywhere: the answers live in its address. General guidance for a qualified person, not a finding about any home. The person on site decides.

Toilet running, leaking or flushing weak.

Safety look

What decides which causes can apply