How to Unblock a Clogged Sink

By Andrew • Sep 15, 2025

This image shows a stainless steel double kitchen sink, with water running from the faucet into the left basin while the right basin remains empty with a visible drain.

How to Unblock a Clogged Sink

A clogged sink can sneak up on you. At first, it may seem as though the drain is working just fine: You run water and it goes down the drain, quick and clean. Over time, however, the water’s descent down the drain can slow, gradually, until it’s lingering in the basin for several minutes before finally trickling away. The more clogged your sink becomes, the more frustrating it can be—and eventually you’re going to reach a point where you need to do some work on it.
But how? What are the best measures to take when it comes to unblocking a clogged sink? There are four steps to take, and we’re going to lay them out in order for you.
  1. Always begin with a trusty plunger. You’ve surely used one before, on a toilet if not your sink, but the truth is a plunger should always be your first line of offense against a clogged drain. Before plunging, fill the sink maybe a quarter of the way with water. If you have a double sink, cover the other drain with a towel or washcloth.

  2. If this does not work, you will need to move on to the next thing: Baking soda and vinegar! Yes, this is just like your middle school science experiment. Start by emptying any lingering water from your sink—you may have to scoop it into a bucket—and put half a cup or so of baking soda down your drain. Pour a cup of vinegar down after it, and immediately close the plunger to keep the mixture from erupting back out. This will send it shooting down the other end of the drain, hopefully forcing out the clog.

  3. If neither of these first two steps work, you can always try a cable auger. This is, frankly, the toughest method, and it’s not recommended that you try this unless you are a seasoned handyman or you have some plumbing experience.

  4. What’s important to note is that, if none of these methods work, it’s time to call in a professional plumber. Trying these methods repeatedly, when they didn’t work the first time, can actually do more harm than good.

Don’t risk damage to your plumbing. Get the issue resolved effectively, by a drain cleaning professional. Make an appointment with one of our Vancouver plumbing pros at your earliest convenience!

Blog Post Tabs

Avoiding Clogs in Your Kitchen Sink
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If you’re like most homeowners, you use your kitchen sink many times over the course of the day, using it to dispose of all manner of liquid and food particles. Over time, of course, this refuse can build up in your drain and cause it to clog—which could leave you without a working kitchen sink, at least until you get a plumber to the house to unclog it.
What Causes Your Drains to Clog?
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A clogged drain may start as a minor annoyance but can gradually worsen into a complete blockage that makes sinks or tubs unusable and potentially causes serious plumbing problems.
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When it comes to home cleaning needs, one thing is for certain: When you need drain cleaning, you really need it, often with the utmost urgency. A clogged drain can have a seismic impact on you and everyone else who lives in your home, and in many ways it can impede the regular, comfortable lifestyle you otherwise enjoy.
How Regular Plumbing Maintenance Can Prevent Long-Term Property Damage
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The last thing any homeowner wants to wake up to is a plumbing problem—a sink that’s clogged up, a toilet that won’t flush, or, worst-case scenario, water flooding into your home through a leaky or backed-up pipe. Not only are these issues damaging to your property, and potentially costly to fix, but they are also 100 percent preventable—which makes them all the more frustrating when or if they do occur.
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