Water on the Kitchen Floor Under Your Fridge? Here's Where It's Coming From

Water on the floor is stressful, especially on laminate or hardwood. Take a breath. Most fridge leaks come from three places, and two of them are easy.

First, figure out where it’s coming from

Pull the fridge out (gently, ideally with a second person, and unplug it if you have an ice or water line you’ll be moving). Then check, in this order:

1. The water supply line

If your fridge has an ice maker or water dispenser, there’s a thin plastic or braided line running to the back. Check the connection at the valve on the wall and at the fridge. Wet fittings, drips, or a kinked line? Tighten it or replace the line. A $15 fix.

If the puddle keeps growing while the fridge is off, shut the wall valve and call someone.

2. The defrost drain

Inside, at the back wall of the freezer, a drain carries melted frost down to a pan underneath. When it freezes over or clogs with debris, water backs up and overflows into the freezer or onto the floor.

Signs: ice sheet on the freezer floor, water pooling inside, leaks that show up a few hours after a defrost cycle.

Fix: thaw it with warm water from a turkey baster, then flush. If it keeps freezing, the defrost heater is likely failing. Part cost $30 to $80.

3. The drain pan

The shallow tray under the fridge catches defrost water, which evaporates. If it’s cracked, overfull (because the unit is tilted), or misaligned, you get a puddle. It’s a cheap plastic part.

4. Other causes

• Door gaskets that let in humid air, leading to heavy condensation
• Water filter housing not seated properly (common after a filter change)
• Ice maker overfilling

Why are Northridge kitchens prone to this?

A lot of Northridge homes have older fridges moved from kitchen to garage after a remodel. Garage heat and humidity swings make condensation and drain freezing worse. Lines and valves also age together, and 15-year-old plastic lines get brittle.

What not to do

Don’t ignore it. Water under a fridge swells the subfloor, and mold follows. Mop up, find the source, and fix it within the week.

Quick answers

Why is my fridge leaking water from the bottom? Clogged defrost drain or a loose supply line most often.

Is it safe to keep using it? Yes, if the leak is slow and the floor is protected. Not if it’s a supply line.

What does the repair cost? From $0 to about $250.

Want us to look at it? We’ll find the source and give you the number up front.