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Why does my toilet keep running after I flush?
Can I fix this myself? After flushing, the toilet doesn’t stop running and the cistern keeps filling with water. How much would it cost to get a plumber to fix?
Expert Trade Answers
"Sounds like flush machine has failed and is not shutting off. And as for cost that all depends on area you live and parts needed"
Answered on 18th Sep 2025 - Member since Aug 2025 -
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"There are two possible causes.
1. The flush valve seal is worn or dirty or the valve itself isn't seating correctly.
2. The fill valve could be overfilling causing the cistern to oveflow into the bowl.
Both issues are easily resolved by repair or replacement of components."
1. The flush valve seal is worn or dirty or the valve itself isn't seating correctly.
2. The fill valve could be overfilling causing the cistern to oveflow into the bowl.
Both issues are easily resolved by repair or replacement of components."
Answered on 18th Sep 2025 - Member since Jun 2025 -
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"Good afternoon. I think about £100-£150. Need to be changed syphon"
Answered on 18th Sep 2025 - Member since Dec 2024 -
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"Hi, not really a diy fix, sounds like the inlet valve is not shutting off.
Parts and labour around £95, give or take depending on the style of toilet"
Parts and labour around £95, give or take depending on the style of toilet"
Answered on 18th Sep 2025 - Member since Aug 2025 -
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