THE GUIDE / Kitchen & bath
Why a toilet keeps running
A running toilet may waste water because a tank component is not sealing or adjusting correctly.
What you can check
- 01
Remove the tank lid carefully and set it on a stable, soft surface.
- 02
Observe whether the water stops after flushing and whether the chain appears tangled or trapped beneath the flapper.
- 03
If the chain is visibly tangled, gently straighten it without adjusting other parts, then replace the lid and check again.
Safety first
Do not use excessive force on plastic parts or a stuck shutoff valve. If the tank is cracked or water is leaking onto the floor, stop using the fixture.
When to ask for help
Get help if the toilet keeps running, the tank leaks or parts need replacement.
Ask about this issueGeneral guidance only. Every home is different; stop if you are unsure or conditions are unsafe.