Clear a Clogged Sink Drain

Clogged drains happen. Water backs up, the smell starts, and you're standing in front of a sink that won't drain. The good news is that most of what clogs a kitchen or bathroom drain is within arm's reach and removable without calling a plumber. You'll spend fifteen minutes or an hour depending on what's down there, but you'll know exactly what happened and why. The key is starting simple—plunger first, then the trap, then tools—and not forcing anything past a real blockage.

1. Plunge First, Ask Questions Later. Block the overflow hole with a wet cloth. Fill the sink with 4 inches of water. Place the plunger cup directly over the drain opening, push down and pull up forcefully 15–20 times without breaking the seal. The suction and pressure often dislodges soap scum, hair clogs, and shallow debris.
2. Empty the Trap First. Place a bucket underneath the curved P-shaped pipe under the sink. Unscrew the slip nuts on both ends by hand or with a wrench—they're hand-tight, not torqued. Pull the trap straight down and empty the water and debris into the bucket. Run your fingers through it and rinse it out. Often the clog is right there in the trap itself.
3. Look Before You Flush. With the trap off, look straight up into the drain opening. Use a flashlight. If you see hair, soap, or debris, fish it out with needle-nose pliers or a wire hook. Pour hot water down the opening to test. If it drains freely, you're done—reinstall the trap.
4. Snake Out the Deep Clog. If the trap was clean and water still backs up, the clog is deeper in the wall. Insert the snake (auger) tip into the drain opening. Crank the handle clockwise while feeding the cable down. When you hit resistance, crank harder and push forward—you're either breaking up the clog or snagging it so you can pull it out. Retrieve the cable slowly, removing debris as it comes.
5. Verify the Victory. After you've snaked the line, slowly pour hot water down the drain while looking under the sink for leaks. The water should drain steadily without backing up. If it's still slow, snake it again or leave a bucket under the trap overnight to confirm it's holding steady.
6. Gentle Hands Win Here. Align the trap back under the opening. Hand-screw both slip nuts until they're finger-tight. Use a wrench to tighten each nut an additional quarter turn—snug, not cranked. Fill the sink and let it drain slowly to confirm no leaks at the joints.
7. Don't Forget the Overflow. If water drains but very slowly from a sink with an overflow hole (common in bathrooms), insert the plunger or snake tip into the overflow opening from inside the sink. A blockage there reduces drainage capacity. Clear any debris and flush with hot water.