Washing Machine Leaking: What to Do and When You Need a Plumber

Where Is the Water Coming From?

Pinpointing the source of a washing machine leak tells you whether it's a plumbing job, an appliance job, or a DIY fix. Pull the machine forward carefully and look for water during the fill, wash, and spin cycles.

Leak from the Back of the Machine

Most back-of-machine leaks originate from the water supply hoses — the two braided hoses connecting your cold (and sometimes hot) supply to the inlet valve. These hoses can crack, perish at the connectors, or lose their rubber washers over time.

Plumbing job: If the leak is at the wall connection or the stop tap is faulty, that's plumbing. If it's at the hose-to-machine connection, replacement hoses cost £8–£15 and are a simple DIY swap — just turn off the stop tap first.

Leak from the Front or Door Seal

A leaking door seal (drum gasket) is an appliance repair — the rubber seal has torn or accumulated debris that prevents a proper seal. This isn't a plumbing issue. Contact a washing machine repair engineer.

Leak from the Drain Hose or Standpipe

The drain hose runs from the back of the machine to the standpipe or under-sink trap. Leaks here can be:

• A split or cracked drain hose (appliance repair)
• A loose clip at the standpipe connection (DIY — push the hose in further and secure with a cable tie)
• A blocked standpipe overflowing because the drain can't clear fast enough (plumbing or drain issue)

A blocked standpipe is common in older homes — water from the machine's pump overwhelms a partially blocked drain. If your sink also drains slowly, the blockage is downstream. Our drain clearing team can clear the trap and stack with a jet or snake.

Leak Underneath the Machine

Water pooling directly under the machine during the wash cycle usually indicates an internal component — pump, drum seal, or sump hose. This is an appliance engineer issue, not plumbing.

Water Damage: Act Fast

Even a slow washing machine leak can cause significant damage to chipboard flooring, kitchen cabinets, and the ceiling of rooms below. If you discover water pooled under or around the machine:

1. Turn off the machine immediately
2. Turn off the stop tap on the supply hose
3. Mop up and dry the area thoroughly
4. Raise the machine on blocks if possible to allow the floor to dry

If water has gone through the floor, read our guide on what to do when water comes through the ceiling. You may also need to document the damage for an insurance claim — see our post on water damage insurance documentation.

Stop Taps: The Most Common Plumbing Issue

Many washing machine supply stop taps — especially in homes over 20 years old — have never been closed. When a leak is discovered and the homeowner tries to close the tap, it either won't turn or leaks from the spindle. This is a plumbing repair: the stop tap needs replacing.

We recommend having accessible, working stop taps for all appliances. Our plumbing repairs team can replace faulty stop taps and add isolation valves for easy future maintenance.

When to Call Us in Peterborough

Call a plumber (rather than an appliance engineer) if:

• The supply hose is leaking at the wall or the stop tap
• The stop tap won't close or is leaking
• The standpipe is overflowing due to a drainage blockage
• You have water damage through a floor or ceiling

We cover Orton, Hampton, Bretton, and all Peterborough postcodes. Book a visit or call for same-day availability.