How to Unclog a Kitchen Sink

Drainage issues in the kitchen usually stem from a buildup of food scraps, fats, or oils that have gradually narrowed the pipe diameter. Before calling a professional, most clogs can be resolved with basic tools and a bit of patience. Successfully clearing a sink requires a methodical approach starting with the easiest solutions before moving to mechanical disassembly. When done well, you will restore full water flow without damaging your pipe connections or seals.

1. Empty and Clear. Remove any standing water from the sink using a cup or bucket. Clear away any visible debris from the strainer to prevent further blockage.
2. Plunge It Out. Fill the sink with enough water to cover the head of the plunger. Use a flat-bottomed cup plunger to create a tight seal over the drain and pump vigorously for 30 seconds.
3. Set Up Your Workspace. Place a bucket directly beneath the U-shaped pipe underneath your sink. This catches the water that will inevitably spill when you loosen the connections.
4. Disconnect the Trap. Unscrew the slip nuts on both ends of the U-shaped pipe by hand or with channel-lock pliers. Carefully pull the pipe down to empty its contents into your bucket.
5. Fish Out the Clog. Remove the physical blockage from inside the U-pipe using a gloved finger or a stiff brush. Ensure the interior walls are free of buildup before reassembling.
6. Reconnect and Verify. Hand-tighten the slip nuts back onto the pipe connections. Run hot water through the sink for two minutes to check for leaks and ensure the flow is restored.