Why Does My Toilet Keep Running? | Plumbers in Birmingham
If your toilet keeps running, it’s usually down to a fault inside the cistern. This is one of the most common call-outs we get as plumbers in Birmingham, and while some fixes are simple, others need proper repair.
If left, a running toilet can waste a lot of water and lead to bigger issues. If you need help fast, visit our toilet repair Birmingham page.
Common reasons your toilet keeps running
1. Worn flush valve seal
Water constantly trickles into the pan because the seal isn’t holding properly.
2. Faulty fill valve
The valve doesn’t shut off, so the cistern keeps filling.
3. Water level too high
Water spills into the overflow and runs into the pan.
4. Limescale build-up
Stops parts moving properly, causing intermittent running.
5. Sticking float or button
The mechanism doesn’t reset fully after flushing.
Simple checks you can make
- Lift the lid and check the water level
- Flush and watch if it shuts off properly
- Look for a constant trickle into the pan
- Check if the button or lever is sticking
If it’s still running after this, it likely needs parts replacing.
When to call a plumber
Call a professional if:
- The toilet keeps refilling
- You can hear constant water running
- It’s built into a unit or hard to access
- You’ve already tried adjusting it
For urgent issues, you may need emergency plumbers in Birmingham.
What a plumber will do
A plumber will:
- Diagnose the fault
- Replace worn parts (valves, seals)
- Set correct water levels
- Test everything properly
Some toilets need more than one part, which is why it’s not always a quick fix.
Typical repair costs
Costs vary depending on the issue, but most toilet repairs fall into:
- Minor adjustment or seal replacement
- New fill valve or flush valve
- Full internal rebuild (older toilets)
Emergency or out-of-hours visits will cost more.
Need
?
If your toilet won’t stop running, don’t leave it wasting water. We cover all of Birmingham with fast, reliable repairs.
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FAQs
Why does my toilet keep running?
Usually a faulty seal, fill valve, or incorrect water level.
Is it urgent?
Not always, but it can waste water quickly.
Can I fix it myself?
Sometimes, but many repairs need replacement parts.
