Toilet keeps running
The toilet refills on its own or never stops running.
What you're probably seeing
The toilet refills on its own or never stops running.
Likely causes
- A worn flapper that doesn't seal.
- The fill valve set too high or failing.
- A float or chain problem.
Safe checks you can do now
- Lift the tank lid and check the chain isn't caught under the flapper.
- Lower the float so water stops below the overflow tube.
- Turn the valve behind the toilet to stop it meanwhile.
When to call a pro
Parts are replaced and it still runs, or you'd rather not do it.
General information about common causes, not a diagnosis of your home.
FAQ
Quick answers
Who fixes toilet keeps running?
A plumber. Call (833) 835-1569 to connect with an independent local plumber.
How much does it typically cost?
Toilet repair: $130–$300 (HomeGuide 2026 national ranges). Your pro sets the real number after seeing the job.
When should I call?
Parts are replaced and it still runs, or you'd rather not do it.
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