Washing machine leaking? Here’s what it usually means
Where the water appears tells you most of the story: front and door — seal or detergent drawer; underneath during fill — supply hose or valve; underneath during drain — pump, sump hose or a blocked filter; behind the machine — the standpipe or waste connection. Stop using it and turn off its water valve until you know which.
Likely causes
- Door seal (front leaks)
- The rubber gasket perishes, or trapped debris (a stray hair grip is a classic) cuts it. Visible splits or black mould embedded in the fold usually mean replacement — a routine repair.
- Blocked filter or sump (drain-cycle leaks)
- The pump filter behind the little front hatch catches coins and lint; when clogged, water finds other ways out. Cleaning it is a 10-minute DIY job — with towels ready.
- Supply hoses and valves (fill leaks)
- Hose washers harden with age; connections work loose with vibration. If the hose itself bulges, replace it before it bursts — a burst supply hose can flood a kitchen in minutes.
- Detergent drawer overflow
- Blocked drawer jets or too much powder make water back out of the drawer front. Clean the drawer and housing; use less detergent than you think you need.
What not to do
- Don't run another cycle 'to check' — water under a machine finds floorboards and the ceiling below
- Don't ignore a leak near the plug or socket: switch off at the wall first
- Don't drag the machine out over a wet floor on your own — they're heavier than they look
When to request help
After you've cleaned the filter and checked the hose connections: if it still leaks, or the leak involves the door seal or underneath during wash, book an appliance engineer. Same-day if you can't isolate the water supply.
Related questions
Is a leaking machine worth repairing?
Seals, hoses, filters and pumps: yes — routine parts on any machine under ~8 years old. A leaking drum bearing on an older machine: usually time to replace, and an honest engineer will say so before charging you.
Reviewed by the London Heroes Operations Team. General guidance, not a substitute for an on-site professional assessment — and never for the gas emergency line (0800 111 999) if you smell gas.