Washing Machine Leaking Water? 7 Causes Ranked by How Common

You walk into the laundry room and there is water around the washer. Maybe a small puddle, maybe a small flood. Either way it has to stop before flooring damage piles up. The good news: where the water sits tells you most of what you need to know. Front of the unit means door seal or detergent drawer. Back of the unit means hoses. Under the unit means tub seal or pump.

Before you start checking parts, run an empty cycle and watch the washer from all angles with a flashlight. Catch the leak in the act. Trying to diagnose after the fact rarely works because water spreads.

Start With These 30-Second Checks

1. 1Map the leak: front, sides, back, or directly underneath?
2. 2Check water hose connections at the wall and at the back of the washer for visible drips.
3. 3Inspect the door seal (front-loaders) for tears or trapped debris.
4. 4Look at the detergent drawer for old soap buildup that may be diverting water.

1. Door Gasket Torn or Hardened (Front-Loaders)

Number one cause on front-load washers. The rubber boot around the door wears down over time, especially the lower section that sits in standing water. A small tear or a hardened section lets water spray out during heavy spin cycles.

1. 1Open the door and inspect the entire gasket - run a fingertip around the inner ring slowly.
2. 2Pull back the folds and look for tears, cuts from underwire bras, or hardened brittle sections.
3. 3Clean any visible mold or detergent residue with warm soapy water and a soft brush.
4. 4If the gasket has any visible tear or hard spot, order the replacement by your model number ($40 to $100 depending on brand).
5. 5Replacement involves removing a clamp ring and pulling the old gasket out - takes 30 minutes once you have the new part.

2. Water Inlet Hose Cracked or Loose

Both rubber hoses on the back of the washer are under constant pressure from your house water supply. After 5 to 7 years they crack, swell, or burst. This is the leak that floods entire floors.

1. 1Shut off both hot and cold water valves at the wall.
2. 2Inspect both hoses for visible bulges, cracks, or rust stains around the fittings.
3. 3Disconnect each hose and check the rubber washer inside the fitting - replace any that are cracked or compressed.
4. 4If the hose is over 5 years old, replace both with stainless steel braided hoses (about $20 each, last 10+ years).
5. 5Hand-tighten new hoses plus a quarter turn with a wrench - over-tightening crushes the washer.

3. Drain Hose Loose or Cracked

The drain hose at the back of the washer can wiggle loose where it meets the standpipe or where it connects to the pump. Water sprays out the connection during the drain phase.

1. 1Check the connection between the drain hose and the standpipe or sink - it should be secured with a clamp or zip tie.
2. 2Pull the washer out and inspect where the drain hose connects to the pump on the back of the unit.
3. 3Tighten any loose hose clamps with a Phillips screwdriver (most are spring clamps you can squeeze with pliers).
4. 4Replace the hose if it has cracks, kinks that will not straighten, or stiff sections that snap when bent.

4. Drain Pump Cracked or Loose

The pump itself can develop hairline cracks from years of vibration and freeze-thaw cycles in cold garages. The leak shows up directly under the unit, often only during the drain phase.

1. 1Unplug the washer and pull it out from the wall.
2. 2Remove the access panel and find the pump - it is the part with three hoses (in, out, drum).
3. 3Wipe the pump dry, run a short cycle, and watch for water beading on the pump housing.
4. 4Tighten any loose mounting screws on the pump.
5. 5If the pump body itself is cracked, replace the whole unit - $30 to $80, takes 45 minutes.

5. Tub Seal or Bearing Failure

The tub seal sits between the inner drum and the outer tub. When it fails, water leaks down onto the bearing and the motor. Symptoms: leak under the unit during spin, often with a loud rumbling noise.

1. 1Listen during a high-speed spin - a tub seal failure is usually accompanied by a deep rumbling or grinding.
2. 2Look under the washer for water with a slight oily or rusty tint (the bearing grease is breaking down).
3. 3If your unit is over 8 years old and showing this combination of symptoms, get a repair quote first.
4. 4Tub seal replacement requires partial disassembly of the tub - $200 to $400 in labor, often more than the washer is worth.
5. 5If the unit is under 5 years old, the warranty may still cover this - check before paying.

6. Detergent Overflow or Drawer Clog

Too much detergent or a clogged drawer can cause water to back up and leak from the front of the unit. This is the easiest leak to fix because it does not involve any hardware failure.

1. 1Pull the detergent drawer out fully and look for caked-on soap residue.
2. 2Soak the drawer in hot water for 15 minutes and scrub with an old toothbrush.
3. 3Look inside the drawer cavity with a flashlight - clean any buildup on the underside of the cavity ceiling.
4. 4Use about 2 tablespoons of HE detergent per load (most people use 5 to 10 times too much).

7. Washer Not Level (Check This Last)

An unlevel washer rocks during high-speed spin, which can splash water out around the door seal or shake hose connections loose. Always check this even when something else looks like the obvious cause.

1. 1Place a small spirit level on top of the washer, both front-to-back and side-to-side.
2. 2Adjust the front feet by twisting them - clockwise to raise, counter-clockwise to lower.
3. 3Confirm both back feet are sitting flat on the floor, not floating.
4. 4Lock any adjustment by tightening the lock nut against the washer body.

Tools You Will Probably Need