Has the water been slowly trickling down your drain instead of flowing down freely? When only one drain is affected, the clog is usually in the small pipes leading down from the sink, and you can typically take care of the problem without having to call the plumber. Here are three quick drain cleaning methods to try:
That's right. The plunger is not just for your toilet! But, the secret to using it to successfully on your sink is to use the right tactics. Make sure you have a plunger with a bowl-shaped end rather than one with a splayed-out end. Fill the sink with water, and then carefully position the plunger so that the end completely covers the drain opening. Then, push down as aggressively as you can, before gently pulling back up. Repeat this motion three or four times – using as much force as you can. Then, lift the plunger out. With any luck, the water should start flowing more freely down the drain.
Baking Soda and Vinegar
If the drain is still slow after you have plunged as aggressively as you can, you can try loosening the clog with some baking soda and vinegar. The foam that this mixture creates is especially great for loosening greasy clogs, like those often found in kitchens. Bail any excess water out of the sink, or wait for it to go down on its own. Dump about a cup of baking soda down the drain (there's no need to measure). Follow this up with a couple of cups of vinegar. Just keep pouring until all of the baking soda appears to be dissolved. Leave the mixture to work for an hour, and then rinse it away with hot water.
Clean Out the Trap
There is a U-shaped bend in the pipe beneath your sink. This is known as the trap, and it is meant to catch debris as it goes down the sink. Sometimes, it might get too filled with debris, causing your drain to slow down. If the plunger and baking soda mixture have not loosened your clog, then physically disassembling the trap may work. Place a bucket under the pipes leading to your sink. Then, unscrew the big, white knobs on either side of the U-shaped piece of pipe. Some water will probably flow into the bucket. Pull the U-shaped pipe out, and clear it out. The easiest way to do this is to take it outside and spray it out with the hose. Put it back into place, and screw the white knobs back on tightly.
If your sink is still slow after you employ these three tactics, then the clog might be located further down your plumbing. Your best bet is to call a professional to come remove it.