Washing Machine Leaking From the Bottom? 7 Checks to Find It

A puddle under your washing machine is worrying, but the cause is often simple: a loose hose, a filter cap that wasn’t screwed back in, a dirty door seal or too much detergent. This guide shows you how to make it safe, find where the water comes from, then work through seven checks, easiest first. Most need no tools.

Water under the machine often starts somewhere else, then runs underneath. Each check says where front-loaders and top-loaders differ. For other problems, see all our washing machine fixes.

Before you start, water and electricity: If water has reached the socket (outlet), the plug or the cable, don’t touch them. Switch off the power at the consumer unit (fuse box or breaker panel) first, then unplug the machine. If the socket area is dry, switch off at the wall and unplug. Turn off the water tap (faucet) behind the machine. Mop up and lay towels down. The water may be hot if a warm wash was running. Only plug back in once the socket, plug and floor around them are completely dry.

The 7 checks at a glance

1. Inlet hoses at the tap and the machine
2. The drain hose and where it drains
3. The pump filter cap (front-loaders)
4. The door seal (front-loaders)
5. The detergent drawer and too much detergent
6. Is it really the washer?
7. Leaks from inside the machine

First, find where the water comes from

Before you mop, note where the puddle was. Whitegoods Help calls the location of the water “the fastest route to identifying the likely cause”. Water at the front usually means the door seal or the drawer. Water at the back usually means a hose (Whitegoods Help).

Then catch the leak in the act:

1. Dry the floor, the hoses and the outside of the machine.
2. Lay paper towels or newspaper under and around the machine: front, sides, behind, under each hose connection and around the drain.
3. Plug back in, turn the tap on and run a short cycle with an empty drum and no detergent (LG, Whirlpool).
4. Stay with the machine. Check the paper every few minutes and note when wet spots appear. If water spreads fast or heads for the socket, switch off at the consumer unit.

When the drips appear	Where to look
While it fills	Inlet hoses, drawer
While it washes	Door seal, too many suds
While it drains	Drain hose and drain, pump filter
Only during a fast spin	Inside the machine
All the time, even when off	Hose at the tap, plumbing

If nothing leaks with an empty drum, LG says “it is highly likely not a machine-related problem” (LG). Whirlpool uses the same test to rule out overloading, so check the load size and dose.

Check 1: Inlet hoses at the tap and the machine

The inlet (fill) hose runs from the tap to the back of the machine. Some machines have two, for hot and cold. A leak here shows at the back while the machine fills (Whitegoods Help), then often runs underneath.

• Connections: Turn the tap off, pull the machine out gently and feel both ends of each hose for damp. Whitegoods Help suggests finger tight plus a quarter turn with a spanner (wrench), not overtightened (Whitegoods Help). LG warns not to cross-thread the fittings (LG).
• Rubber washers: Unscrew the hose and look inside each connector. Whirlpool says to check the washers are “fully in place and not damaged or missing” (Whirlpool). LG says to replace worn or damaged ones (LG).
• The hose: Look for cracks, splits and kinks. Beko says to replace a damaged hose immediately (Beko).
• The tap: If the tap itself leaks at the pipe or valve, LG says to contact a plumber (LG).

How often: Whirlpool says to consider replacing hoses “every three to five years” (Whirlpool). Whitegoods Help suggests every 5 to 7 years as a precaution, because “old hoses can rupture without warning”. Some machines, including some Bosch models, use an aqua-stop hose that must be replaced with the same type (Whitegoods Help).

Check 2: The drain hose and where it drains

The drain hose is the wider, ribbed one. Leaks here show only while the machine pumps out.

• The hose: Check it for holes, cracks or kinks, and that it sits properly in the drain (LG). If it connects inside the cabinet, replacing it is a technician’s job.
• Standpipe (common in the US and Canada): Samsung says the hose should go no more than 15 cm (6 in) into the pipe and should not form an airtight connection (Samsung). LG says to pour a jug (pitcher) of water in quickly. If it overflows, call a plumber (LG).
• Sink trap (common in the UK and Ireland): a partly blocked waste pipe backs up and overflows around the hose. It happens only while draining, and the water is often slightly grey-brown (Whitegoods Help).
• Floor drain (common in India and much of Asia): make sure the hose end is held firmly in the drain and the drain isn’t clogged with lint or hair.

If the washer also drains slowly or leaves water in the drum, see our guide to a washing machine not draining.

Check 3: The pump filter cap (front-loaders)

Most front-loaders have a pump filter behind a small flap at the bottom front. Samsung says leaks can come from an improperly closed filter cap or a clogged filter (Samsung). LG names a loose drain hose cap, or a filter “not seated or screwed on properly” (LG).

1. Unplug the machine. Put towels and a shallow tray under the flap, because water will come out.
2. If there is a small emergency drain hose, push its stopper fully in. A slow drip from this hose almost always means the stopper isn’t fully in (Whitegoods Help).
3. Unscrew the filter, clear any lint, and wipe its rubber seal and the housing. Dirt or detergent residue there can stop it sealing.
4. Check the seal sits flat in its groove, then screw the filter back in firmly. Whitegoods Help says the most common cause of a leak after cleaning is a filter not tightened enough (Whitegoods Help), but LG warns that over-tightening can damage it (LG).
5. Run a short cycle and watch the flap for drips.

Top-loader? Many have no pump filter you can open. Samsung lists this check for front-loaders only (Samsung).

Check 4: The door seal (front-loaders)

Whitegoods Help calls the rubber door seal “by far the most common source of leaks” on a front-loader (Whitegoods Help). Water escapes at the front and runs under the machine.

• Trapped items: A sock or cloth caught between the door and the seal can compromise the seal (Beko).
• Dirt: Lint and hair on the seal can make the door leak (Samsung). Wipe the seal and door glass with a damp cloth, pulling back the folds.
• Tears: Look all the way round, especially at the bottom. Coins, hair grips and bra wires can puncture it (Whitegoods Help). Replacing a seal means removing panels, so book a technician.

Don’t use neat (undiluted) bleach on the seal: LG says it can make the gasket deteriorate (LG). Never mix bleach with vinegar or other cleaners, because it releases toxic gas.

Load and level: An overloaded drum can stop the door closing properly (Beko). A machine that isn’t level can leak from the door seal (Whirlpool). Check with a spirit level. Top-loaders have no door seal, but LG says an overloaded tub can leak (LG).

Check 5: The detergent drawer and too much detergent

Excess suds can overflow and look like a leak from the drawer, the door seal or the base (Whitegoods Help).

• Dose: Use the amount on the packet. Bosch recommends a low dose for soft water or lightly soiled laundry (Bosch).
• Type: LG and Samsung say to use only HE (high efficiency) detergent (LG, Samsung). Outside North America, check the packet says it suits your machine.
• The drawer: Pull it out and wash it by hand in warm water (LG). A blocked drawer or blocked water jets above it make water overflow at the front (Whitegoods Help). Close it fully afterwards.

Top-loader? LG says residue in the bleach dispenser can make it overflow and leak from underneath (LG).

Check 6: Is it really the washer?

• Condensation: Whitegoods Help says floor water is occasionally condensation running down from a nearby fridge, freezer or tumble dryer (Whitegoods Help).
• Plumbing: Household plumbing leaks appear even when the machine isn’t running (Whitegoods Help).

To check, leave the machine off with the tap on and fresh paper towels underneath for a few hours. Wet towels point to the tap, the hose connection or the pipes.

Check 7: Leaks from inside the machine

If the hoses, filter, door seal and drawer are dry but water still collects underneath, the leak is probably inside the cabinet. Whitegoods Help links the timing to the likely part (Whitegoods Help):

• Under the front, while draining: the drain pump, often with a strained buzzing.
• Under the middle, during any water phase: the hose between the tub and the pump.
• Only during a fast spin: the drum bearing seal, often with rumbling and rust-coloured stains.

Bosch says a leak underneath that continues after these checks could mean “a more serious internal leak” (Bosch). Don’t open panels or tip the machine to look.

When to call a technician

Stop and call a technician if: water has reached the socket, plug or cables (have an electrician check the socket before using it again); the leak comes from inside or under the machine and the hoses, filter and seal are fine; the leak keeps coming back; you smell burning; the RCD (safety switch) or breaker has tripped; or the fix means removing the back or base panel, the pump or the door seal, or tipping the machine over.

When you book, have the brand, model number and any error code ready. Say where and when the water appears, and which checks you’ve done.

Common questions

Why is my washing machine leaking from underneath?

Often the water runs there from a loose hose, a loose filter cap, the door seal or too many suds. If those are dry, Whitegoods Help names the drain pump, the tub-to-pump hose or the drum bearing seal (Whitegoods Help). Those need a technician.

Is it safe to use a leaking washing machine?

Not until you know the cause. Whitegoods Help’s answer is “not safely”, because water and electricity together are a serious risk. Find the source first, running it only for a short test while you watch.

Can too much detergent cause a leak?

Yes. Excess suds can overflow from the drawer, the door seal or the base. Use the dose on the packet, less for soft water or lightly soiled loads, and HE detergent if your manual asks for it.

Sources

• Why is my washing machine leaking water? (Whitegoods Help)
• Cleaned pump filter now it leaks (Whitegoods Help)
• What to do if water is leaking from the washing machine (Samsung)
• What to do if your washing machine leaks (Samsung)
• Front load washer: water leaks to the floor (LG)
• Why is my front load washing machine leaking? (LG)
• Top load washer leaking (LG)
• Reasons why your washing machine is leaking (Whirlpool)
• Why is my washing machine leaking? (Bosch UK)
• How to solve leaking issues on your Beko washing machine (Beko)