Washing Machine Leaking? How to Find Where the Water Is Coming From

A puddle around the washing machine is one of those faults that punishes waiting. Water finds its way under flooring and into skirting long before it looks serious, so it is worth finding the source today rather than mopping around it for a month.

The good news: why a washing machine is leaking usually comes down to one of six places, and you can narrow most of them down yourself just by looking at when and where the water appears. Here they are, from the easiest fix to the hardest.

Safety first: switch the machine off at the wall and turn off the taps before you go poking behind it. Water and powerpoints are a bad combination.

First, read the puddle: when does the water appear?

Before pulling the machine out, note the timing. It narrows the search dramatically.

• ✓Water appears even when the machine is off → tap, valve or supply hose connection
• ✓During fill → supply hoses or detergent drawer
• ✓During wash or spin → door seal, drum or internal hoses
• ✓During or after draining → drain hose, drain filter or pump
• ✓Only with big or bubbly loads → oversudsing or overloading, not a fault

1. The tap and supply hose connections

Start behind the machine. A washing machine tap leaking at the spindle, or a supply hose weeping at either end, drips down the wall and pools underneath, which is why so many people describe a washing machine leaking from underneath when the source is actually up top.

Feel along both supply hoses and around the tap with a dry hand or a paper towel. A connection that is merely loose can be nipped up gently by hand. A corroded tap or a hose with a bulge or perish marks should be replaced rather than nursed, because supply hoses fail under mains pressure and a burst one will flood the room, not drip.

2. The detergent drawer

If water runs down the front of the machine during the fill, the drawer is the usual culprit. A blocked or crusted drawer makes the incoming water back up and overflow out the front instead of flushing into the drum.

Pull the drawer, soak off the built-up detergent, and brush out the housing. Our guide to cleaning a washing machine properly covers the full routine. If the drawer is clean and it still overflows, the inlet jets or pressure may need a professional look.

3. The door seal on front loaders

A perished, torn or mould-damaged door seal lets water past during the wash, typically showing up as a dribble down the front or a puddle at the door end of the machine.

Peel the seal back and inspect the whole circumference for splits, hardened patches and trapped grit. Small foreign objects, an underwire, a screw, a hair clip, wedge into the fold and cut the rubber. A damaged seal is not repairable, but replacing one is a routine job for a technician.

4. The drain filter and drain hose

A drain filter that was last opened never, or refitted crooked after cleaning, seeps slowly and constantly at the bottom front corner. Open the hatch, pull the filter, check the sealing ring is intact and free of grit, and screw it back in straight and firm.

The drain hose leaks at three spots: where it joins the machine, anywhere it has been kinked or rubbed through behind the machine, and at the standpipe or sink connection. Also check it is not pushed too far down the standpipe, which can cause an overflow that looks identical to a leak.

5. Inside the machine: pump, internal hoses and drum

If the outside checks come up dry and the machine is still leaking water from underneath, the source is internal. The usual suspects are the drain pump housing, the internal hoses that link tub, pump and drawer, and, at the serious end, the tub or bearing seals.

This is where DIY stops. Getting to these parts means removing panels on a machine that combines water, mains power and a lot of stored spin energy. A technician will trace an internal leak quickly with the panels off and tell you honestly whether the fix makes sense against the machine’s age.

Worth knowing: a bearing-seal leak usually announces itself with a roaring or rumbling spin first. If your machine has been getting louder for months and now leaks, mention that when you book, because it changes the diagnosis.

6. The false alarms: suds, overloading and condensation

Not every puddle is a fault. Too much detergent creates foam that forces its way out of the drawer and door, especially in front loaders. Overloading presses washing against the door glass and seal, squeezing water past. And in winter, a cold laundry can leave condensation lines that look like a slow leak.

Run a small load with half your usual detergent. If the machine stays dry, you have your answer, and our washing machine cleaning guide will help clear the residue that over-dosing leaves behind.

When to call it in

Book a technician if the leak is internal, if a seal or pump needs replacing, or if you simply want it found fast. Leaks are one of the quickest faults for us to diagnose in person because the panels come off and the evidence is right there.

CAI Appliance Services has repaired washing machines across Perth for over 25 years. Fully mobile technicians, all major brands, honest repair-versus-replace advice. Details on our washing machine repair page.

Washing machine leaking: the quick version

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