Water in the bottom of the refrigerator: why, and how to fix it

A tiny drain hole, a big puddle.

The answer in 2 lines. On most refrigerators, frost melts on its own on the back wall of the fresh-food section, and the water runs through a small drain hole down to a pan above the compressor, where it evaporates. If water pools under the crisper drawers, that hole is usually clogged with crumbs or ice. Clearing it with warm water is often enough. Water on the floor, a fridge that stops cooling or a leak near the ice maker is a different problem.

The first 3 steps

Sponge up the water and pull out the crisper drawers to see the channel at the back.
Find the small drain hole at the bottom of the back wall (on some models it's under a cover or inside the freezer).
Check that the door closes fully and that no food or container touches the back wall.

Clearing the drain hole

Clean the channel and the hole with a cotton swab or a soft pipe cleaner, without forcing.
Gently pour a little warm water in with a turkey baster or a needle-free syringe, and check that it flows away.
If the drain is frozen, warm water poured slowly melts the ice plug; on some models the manual says to unplug the fridge and let it defrost.
Some fridges come with a small drain-cleaning tool, or have a rubber valve at the end of the drain tube: your manual tells you. Model-specific walkthroughs: AppliancePartsPros: clogged defrost drain (GE), Hunker: clearing a GE clogged defrost drain. For your brand, search its support site with the model number (on the sticker inside the fridge).
Don't use anything sharp or metal: you could pierce the liner, behind which the cooling lines run.

Possible causes

Water in the bottom, under the crisper drawers: drain hole clogged with crumbs or ice. Clear it with warm water.
Water and thick frost on the back wall: door not closing, worn door gasket, food against the wall. Check the gasket and move food away.
Water on the floor, under or behind the fridge: drain tube out of place, cracked drain pan. Have it checked.
Water and a fridge that isn't cooling: cooling or defrost failure. Call a repair tech.
Water near the dispenser or the ice maker: leaking water supply line. Turn off the water to the fridge (a small valve behind it or under the sink) and have it checked.

What not to do

Poking or scraping the hole with a knife, needle or screwdriver.
Pouring boiling water or a chemical into the drain.
Leaving water to sit: it leads to odors and mold.

What you can do yourself, and where to stop

Clear the hole and clean the channel.
Check the door gasket and clean it with soapy water.
Leave space between food and the back wall.
Stop there: the drain pan above the compressor and the tubes at the back are checked with the fridge unplugged, and any repair to the cooling system is for a repair tech.

Keep your food safe meanwhile

The FDA recommends keeping the refrigerator at 40 °F or below and the freezer at 0 °F, and checking with an appliance thermometer, since the built-in dial doesn't show the actual temperature (FDA: Are you storing food safely?). A basic dial appliance thermometer from a grocery or hardware store is enough: hang it on a middle shelf. If the fridge has stayed warm for hours (a failure or a power outage), check which foods to throw out in our guide on food during a power outage.

When to call a repair tech

Water keeps coming back after you've cleared the hole.
Water runs onto the floor.
The fridge cools poorly or builds up a lot of frost on the back wall.
Your fridge is still under the manufacturer's warranty: call the number in the manual first, not a random repair company.

Who pays?

Under warranty: the manufacturer's limited warranty sets what's covered and for how long; it varies by brand. Check your manual or the brand's website before paying for a repair. Depending on your state, the law may also give you implied warranty rights.
Extended warranty or service contract: check what it covers before calling anyone (FTC: extended warranties and service contracts).
Renters: if the fridge came with the apartment, tell your landlord in writing. See our guide on repairs between tenant and landlord.
Water leaked into the unit below: tell your neighbor and the building manager, and see our guide on water leaks.

In Denver, Tyler finds a small puddle under the crisper drawers every morning. He pulls the drawers, sees the drain hole at the back covered in crumbs, cleans it with a cotton swab and squirts in warm water with a turkey baster. The water drains again, and the puddle doesn't come back.

A made-up story, for illustration.

The numbers (latest published)

40 °F or below in the refrigerator and 0 °F in the freezer: FDA recommendations, current as of November 1, 2026.
No official national statistics on this kind of refrigerator problem were found: we prefer not to quote a figure.

Bobby

Sources, verification, confidence

Verified on November 1, 2026, for the United States. Confidence: high for food-safety temperatures (FDA) and for the general way the defrost drain works; medium for model-specific steps, which depend on your brand and model: check your manual. This guide describes common cases, not a diagnosis.