Why Is My Kitchen Sink Leaking?

A leaking kitchen sink can cause significant water damage. We break down the most common sources of under-sink leaks.

Finding the Source

The cabinet under the kitchen sink is a busy place, filled with pipes, hoses, and connections. When a leak occurs, finding the exact source is the first step.

Common Leak Locations

• The Drain Strainer: Plumber's putty or gaskets around the drain can dry out and fail over time.
• P-Trap and Drain Pipes: The curved pipe under the sink can loosen at the joints or corrode if made of metal.
• Water Supply Lines: The hoses connecting the shut-off valves to the faucet can leak if they are old or improperly tightened.
• The Faucet Base: Water can seep down through the base of the faucet if the internal O-rings are worn.

Don't Ignore Small Leaks

Even a slow drip can cause mold growth and rot out the bottom of your cabinet. Place a bucket under the leak and contact a plumber to resolve the issue promptly.