Emergency call-out
Overflowing toilet in Macclesfield
In short
An overflowing toilet is either a blockage downstream or a cistern that will not shut off, and the fix differs completely. Stop the water going in — lift the cistern float or close the small isolation valve on the supply pipe — and do not keep flushing. Flushing a blocked pan is what turns an inconvenience into a floor full of foul water.
Also called: toilet overflowing · toilet won't stop filling · toilet flooding bathroom · blocked toilet overflowing
Signs you need this
- Water rising in the pan and not draining away
- The cistern refilling continuously and spilling over
- Water running from an overflow pipe outside the house
- Gurgling from the bath or shower when the toilet is flushed
- More than one fitting backing up at the same time
First work out which end the problem is. If the pan fills up when you flush and drains away slowly or not at all, the blockage is downstream in the waste. If the cistern keeps running and water comes over the top or out of the overflow, the fill valve has failed and the pan is a bystander.
For a blocked pan, stop flushing. Each flush adds nine litres to a bowl that is already full. Close the isolation valve on the supply pipe to the cistern — a small screwdriver-slot valve, usually just below it — so nobody can flush by habit. Then the blockage gets cleared with a plunger or an auger, and if it does not shift, the problem is further down the branch or in the soil stack rather than in the pan.
For a cistern that will not shut off, the fill valve or float has failed. Older ball-and-arm float valves wear at the washer or the pivot; modern side-fed and bottom-fed valves fail at the diaphragm. The overflow you may see dripping outside the house on an older installation is doing exactly what it was designed to do — telling you the valve has failed. Modern cisterns discharge internally into the pan instead, which is why a modern toilet with a failed valve just runs quietly and expensively into the drain.
Foul water on a bathroom floor needs treating as contaminated. Keep pets and children out, wear gloves, get it up rather than mopping it about, and disinfect the floor afterwards. Anything porous that has soaked it up — a bath mat, an underlay — is better replaced than cleaned.
If more than one fitting is misbehaving at once — the toilet backing up while the bath gurgles, or water rising in the shower tray when the WC is flushed — the blockage is not in the toilet at all. It is in the soil stack or the underground drain, and that is where the work needs to happen.
What the job covers
- Stopping the water going in — isolation valve or float lift
- Clearing the pan and trap with plunger or closet auger
- Rodding the branch or stack where the blockage is further down
- Replacing failed fill valves, float valves and flush mechanisms
- Checking the soil stack and gully where multiple fittings are affected
- Advice on whether the blockage is on a shared drain — which is often the water company's to clear
What it costs
We don't publish a price for this yet, because a number pulled out of the air is worse than no number at all — your plumber has to honour it. You'll get a firm price for your actual job when they ring you back, before any work starts. The quote itself is free and there's no obligation either way.
Common questions
How do I stop it right now?
Find the small isolation valve on the pipe feeding the cistern and turn the slot a quarter turn so it sits across the pipe. If there is no valve, lift the float arm in the cistern and tie or prop it up, or close the internal stopcock. Then stop flushing.
Can I use chemical drain cleaner?
Not in a toilet, and not on a blockage sitting in standing water. It rarely reaches the obstruction, it damages some pan seals and older pipework, and it makes the job hazardous for whoever has to open the pipe afterwards. Mechanical clearing is faster and safer.
Need this doing in Macclesfield?
Tell us the job and it goes straight to our local plumber — one call back, usually the same day. Free quote, no obligation.