Toilet Keeps Running
Water continuously runs into the toilet bowl after flushing, often with a hissing or trickling sound.
What Is Causing This?
- 1Worn flapper valve not sealing properly
- 2Float arm set too high
- 3Faulty fill valve
How Urgent Is This?
This should be fixed in the coming weeks. Leaving it may allow the problem to worsen and cost more to repair.
What Needs to Be Done
A plumber will inspect the cistern, adjust or replace the float valve, flapper, or fill mechanism. Most toilet repairs are straightforward and completed within an hour.
How Much Will It Cost?
National average estimate
Labour: £246 – £620 | Materials: £200 – £830
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Prices are estimates based on typical UK rates. Actual costs depend on the specific issue, accessibility, and your location. All quotes from tradespeople on Tradesfolk are completely free.
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Ask a QuestionHow to Prevent This
Avoid using bleach tablets inside the cistern as they degrade rubber parts. Replace internal components every 5 to 7 years.
Related Problems
Other Plumber Problems
A tap that drips constantly, wasting water and causing staining around the sink or basin.
Water comes out slowly from taps or the shower, making everyday tasks frustrating.
Hot water taps run cold or lukewarm despite the boiler or immersion heater being switched on.
Water drains slowly or not at all from a sink, bath, or shower, often with an unpleasant smell.