At a glance
Symptoms
- • Puddle of clear or soapy water directly underneath the washer after a cycle.
- • Water spreading outward from the front bottom edge of the machine.
- • Damp, warped, or discolored flooring around the laundry closet.
- • Visible drips from the drain pump or motor area when the access panel is removed.
- • Musty smell or mold growth along the baseboards near the washer.
- • Unusual grinding, roaring, or squealing noises accompanying the leak (indicating water hitting bearings).
- • Rusty or brownish water pooling underneath the unit.
Common causes
- • Cracked, deteriorated, or loose internal hoses (tub-to-pump or pump-to-drain).
- • Failing or cracked drain pump housing.
- • Worn central tub seal allowing water to bypass into the bearings.
- • Over-sudsing from using non-HE detergent or excessive amounts of soap.
- • Clogged or overflowing detergent dispenser assembly running down the inside cabinet.
- • Cracked outer plastic tub, usually caused by severe overloading or off-balance loads.
- • Loose or damaged drain pump filter (coin trap) O-ring.
Safety First — Read Before You Start
- •Always unplug the washer from the wall outlet before removing any panels to eliminate the risk of electric shock.
- •Turn off both the hot and cold water supply valves at the wall before beginning work to prevent accidental flooding.
- •Be prepared for standing water; use a wet-dry vac or towels immediately to prevent slipping hazards and floor damage.
- •Washing machines are incredibly heavy. Get a helper if you need to tilt, move, or unstack the unit, especially if installed on a pedestal.
- •Internal sheet metal edges can be razor-sharp. Wear heavy-duty work gloves when reaching blindly inside the cabinet.
Tools & supplies you'll need
- Screwdriver set (Phillips and flathead)
- Nut driver set (1/4-inch and 5/16-inch are most common)
- Pliers (slip-joint and needle-nose for hose clamps)
- Shop-vac or a large stack of old towels
- Flashlight or bright headlamp
- Putty knife (to release front panel clips on top-load models)
- Adjustable wrench (if water inlet hoses need to be removed for access)
Step-by-step instructions
Perform a Diagnostic Leak Test
Before disassembling the unit, identify the specific phase of the cycle where the water appears. Dry the floor thoroughly, then lay down cardboard or newspaper beneath the unit. Initiate a short 'Rinse and Spin' cycle. Observe the paper with a light. If moisture appears during filling, look at the inlet hoses or dispenser. If the leak occurs during agitation, check the tub seal or outer tub. If the water appears during the drain phase, the issue likely resides in the drain pump or the hose connecting the tub to the pump.
Tip: In areas like Spokane with hard water, mineral deposits can prevent valves from fully closing, causing slow leaks even when the machine is powered off.
⚠ Warning: Do not reach under the machine while it is running. Keep your hands clear of moving belts and the motor.
Check for Over-Sudsing and Dispenser Overflows
Often, a 'leak' is simply an excess of suds. Modern HE washers require very little water; using standard soap or too much HE detergent creates excessive foam that escapes through rear vents and condenses into water. Inspect the dispenser for soap buildup, clean the drawer housing with a brush, and run a 'Tub Clean' cycle using white vinegar or a dedicated cleaner.
Tip: If your home has a water softener, you likely need much less detergent than the label suggests—often just a single tablespoon is sufficient.
⚠ Warning: None
Inspect the Drain Pump Filter (Front Loaders)
Front-load models feature a small door at the bottom front housing the drain pump filter. A loose filter, damaged threads, or a compromised rubber O-ring will cause water to pool. Place towels down, unscrew the filter, remove any lint or foreign objects, and ensure the seal is clean and properly seated.
Tip: None
⚠ Warning: Opening the filter releases water trapped in the tub. Use the emergency drain hose to empty the tub into a bucket first if possible.
Access the Internal Components
To inspect internal parts, remove the necessary access panels. Front loaders usually require removing the lower front or rear panel. Top loaders often require removing the control console screws and using a putty knife to release the cabinet clips before sliding the shell off. Trace water trails, which often appear as chalky white or rusty brown streaks.
Tip: Snap photos of the wiring and hose routing before disconnecting anything to ensure you can reassemble it correctly.
⚠ Warning: None
Examine the Drain Pump and Internal Hoses
Locate the drain pump and inspect its plastic housing for cracks. Check the tub-to-pump hose for rot or tears caused by chemical exposure or hard water. Ensure all spring clamps are tight. If the pump housing itself is fractured, the entire assembly must be swapped out.
Tip: Replacing old spring clamps with stainless steel worm-gear clamps can provide a more secure, lasting connection.
⚠ Warning: None
Inspect the Tub Seal and Bearings
Check the underside of the outer tub where the drive shaft enters. Drips from this center point or signs of rusty spray on the cabinet walls indicate a failed tub seal. This seal protects the bearings; once it fails, water degrades the bearings, leading to a loud, roaring sound during spinning.
Tip: None
⚠ Warning: Stop using the machine if the tub seal is failing, as water can reach the motor or inverter board and cause a catastrophic electrical short.
Check the Outer Tub for Cracks
If other components appear dry, inspect the outer tub for fractures. Heavy, unbalanced loads can cause the inner basket to strike the outer tub, leading to cracks. Examine the seams and spring mounting points. While minor damage might be temporarily sealed, a fractured tub generally requires a full replacement.
Tip: If the washer vibrates excessively, inspect the shock absorbers, as failing shocks can lead to the tub hitting the frame.
⚠ Warning: None
Brand-specific notes
Some brands have known design quirks worth knowing about before you start.
LG
LG front loaders (WM series) frequently leak from the drain pump filter housing if the coin trap isn't tightened properly or if the O-ring gets pinched. Always check this first behind the little bottom-left door. If the leak is internal, check the circulation pump hoses which are prone to rubbing against the cabinet.
Samsung
On Samsung WA series top loaders, the water valve assembly at the back can crack from water hammer effects, sending water down the back wall that pools underneath. Also, check the internal dispenser hoses which are notorious for slipping off if household water pressure spikes.
Whirlpool
Whirlpool and Maytag direct-drive top loaders, as well as newer VMW (Vertical Modular Washer) models, often leak from the tub seal. If you see brown, rusty water slinging around the inside of the cabinet, the tub seal and bearings are shot. This is a highly involved repair.
GE
GE front loaders often have issues with the large rubber door boot gasket tearing at the bottom (usually around the 6 o'clock position). Water escapes through this tear, runs down the inside of the front panel, and pools underneath the machine, masquerading as a bottom leak.
Bosch
Bosch compact 24-inch washers often leak due to a clogged internal condenser or a cracked drain pump housing. Because they are frequently installed in tight closets or under counters in coastal condos, finding the leak early is critical to save your cabinetry.
What our techs see most often
Across the Pacific Northwest, from the damp climate of Bellingham to the dry air of Bend, we see many washers in garages. Temperature fluctuations can stress rubber components, but the most common cause of leaks we encounter is the use of non-HE detergents in high-efficiency units.
When to call a professional
- → If the leak is traced to a failed central tub seal and bearings (indicated by rusty water and a roaring spin cycle).
- → If the outer plastic tub has a severe crack requiring a complete tub replacement.
- → If you cannot locate the source of the leak after removing the access panels and running a test cycle.
- → If the washer is stacked under a gas dryer (do not attempt to unstack or move gas appliances yourself).
- → If the water shut-off valves at the wall are heavily corroded, stuck, or leaking themselves.
Washer Maintenance & Replacement Tasks
Step-by-step guides for individual maintenance jobs related to this appliance.
Maintaining Your Washing Machine Drain Pump Filter
Removing Mold from Your Front-Load Washer Gasket
How to Descale a Washing Machine with Vinegar (Hard Water Fix)
How to Stabilize Your Washing Machine and Stop Vibration
Replacing a Washing Machine Drive Belt: A DIY Guide
Frequently asked questions
How much does it cost to fix a washer leaking from the bottom?
Simple hose or filter fixes usually cost $10-$30 for parts. A new drain pump generally runs $50-$150. Professional labor typically ranges from $150-$300 for these tasks. Tub seal and bearing repairs are more intensive and can cost $400-$600, at which point replacement may be more economical.
Can a clogged drain filter cause water to leak underneath?
Yes, especially on front loaders. If the drain pump filter (coin trap) is severely clogged with hair and debris, water can back up under pressure and leak through the pump housing seals, or it can force water up and out of the machine's overflow vents.
Why is my washer leaking rusty water?
Rusty or brown water pooling under the machine is a classic sign of a failed tub seal. The seal's job is to keep water out of the bearings. When it fails, water washes the grease out of the bearings, causing them to rust quickly. The rusty water then drips down the drive shaft onto the floor.
Can using too much detergent really cause a leak?
Absolutely. High-Efficiency (HE) washers use very little water. If you use standard detergent or too much HE detergent, it creates a massive amount of suds. These suds expand, escape through the machine's rear air vents, and condense back into water, running down the inside panels and pooling on your floor.
Related Repair Guides
Washing Machine Won't Drain: Troubleshooting Guide
A washer that fills but fails to empty is a common issue we encounter across the Pacific Northwest. About 70% of these service calls are solved by removing a blockage from the pump filter, unkinking a hose, or clearing an object from the impeller. Most homeowners can fix this in under an hour using basic tools.
Washing Machine Won't Spin: Troubleshooting Tips
A laundry machine that fills and agitates but fails to reach the spin phase is a common issue for homeowners across the Pacific Northwest, from the humid coast of Bellingham to the dry, cold winters in Bend. Frequently, the issue is as simple as an unbalanced load, a faulty door lock, a snapped belt, or a worn motor coupling—most of which can be resolved in under an hour.
Maintaining Your Washing Machine Drain Pump Filter
Cleaning the drain pump filter on your front-load washer is a simple but vital maintenance chore. Using a few towels and a shallow container, you can remove trapped debris like coins, lint, and hair to restore proper drainage.