Dishwasher Leaking Water

Water pooling around or under your dishwasher is most often caused by a worn door gasket that no longer seals tightly during the wash cycle. A cracked tub, a loose hose connection, or oversudsing from the wrong detergent can also be responsible, and each tends to leave water in a fairly identifiable spot once you know what to look for. 

Common Causes 

• Worn door gasket. The rubber seal around the door keeps water inside the tub during the wash and rinse cycles. Once it cracks, flattens, or loses its grip with age, water can seep out around the door edges every time the dishwasher runs, often pooling right at the base of the door where it's easiest to spot. 
• Cracked tub. The tub itself can develop small cracks over years of use, particularly in older units, and any crack will leak steadily throughout the wash cycle regardless of how well the door seal is performing or how new the gasket might be. This is one of the less common causes but also one of the more involved repairs on this list. 
• Loose hose connection. The hoses that supply water and carry it back out connect to fittings underneath the dishwasher, and these connections can loosen slightly over time, leading to a slow drip that pools underneath the unit rather than inside it, which makes it easy to miss until it's spread across the floor. 
• Oversudsing from the wrong detergent. Using regular dish soap or too much detergent creates excess suds that can force their way out through door seals and vents, which looks like a leak but is really a sign of the wrong product or too much of it being used in a single load. 

When to DIY vs. Call a Pro 

You can safely check the door gasket for visible cracks or trapped food debris, confirm you're using dishwasher-specific detergent in the right amount, and inspect visible hose connections if you can safely access the space underneath. It's also worth wiping down the gasket during your regular kitchen cleaning, since food residue trapped in the folds can prevent it from sealing fully even when the rubber itself is still in good shape and shows no visible damage. If the leak continues after these checks, or you suspect a cracked tub, a technician needs to access the machine to confirm the source. 

FAQ 

Can regular dish soap really cause a leak? 

Yes, regular dish soap isn't formulated for the low-suds environment a dishwasher needs, and even a small amount can create enough foam to force its way out around the door during the wash cycle, sometimes within just a few minutes of the cycle starting. 

Why does my dishwasher only leak from the door during certain cycles? 

Heavy-duty or pot-scrubber cycles run longer with more water movement, which can put more pressure on a worn door gasket compared to shorter, gentler cycles, making leaks more likely to show up on those settings first before eventually appearing on every cycle. 

Is it safe to keep using the dishwasher until it's fixed? 

It is not recommended since a worsening leak can affect nearby flooring or cabinetry sooner than expected if left unaddressed.

Can I replace a door gasket myself? 

It's possible on some models and is one of the more accessible repairs, since the gasket typically pulls out and press-fits back in without needing to disassemble the door. If you're not confident doing this cleanly and evenly, a technician can handle it correctly. 

Will a leak damage my kitchen floor or cabinets? 

Standing water can warp flooring or swell cabinet bases if it sits for an extended period, so it's worth addressing a leak fairly soon even if it seems minor at first and easy to wipe up after each cycle. 

If the basics don't stop the leak entirely, Boreal's technicians can find the exact source and repair it properly, backed by a 90-day warranty on parts and labour.