How Do I Know If My Drains Are Blocked?

How Do I Know If My Drains Are Blocked?

Blocked drains are one of the most common plumbing problems. Although the problem is common, that doesn't make it any less unpleasant when it happens to you. Foul-smelling odours, faucets, and fixtures that overflow flooding your home, sinks that are slow to drain or won't drain at all, or ghoulish gurgling sounds coming from your kitchen or bathroom sink are all common signs that you have a blocked drain.

In this article, we will go over the signs of a blocked drain in more detail so that you can diagnose the problem and know when you need to contact a plumber in the event of an emergency.

4 Signs of a Blocked Drain

As mentioned, there are four common signs of a blocked drain. Any one of the following signs is a very good indication that you have a blocked drain.

Foul smell

The smell associated with a blocked drain is very similar to that of raw sewage. It's an unpleasant smell that you definitely don't want lingering in your home. So, if it smells like maybe someone forgot to flush the toilet, but nobody has been in the washroom, then there is a very good chance that one of your drains is blocked.


If water is overflowing from your sink, toilet, or bathtub, then chances are that you have a blocked drain. You can try to use a plunger, and that may resolve the problem, but if not, then you should definitely contact a professional plumber to come out to your home and fix the issue. The last thing you want is for sewage to flood your home, which can cause substantial damage to your property and furniture. It's best not to take any chances.

Gurgling sounds

If your sink or drain is making odd gurgling sounds, then there is a very good chance that it is backed up or blocked. There are commercial products available that may be able to unclog the blockage, but if those products don't work, then you shouldn't hesitate to contact a plumber to unclog the drain for you.

Slow draining

The final sign to look out for when you think you may have a blocked drain is slow drainage. If your sink is draining very slowly or not at all, then chances are that something in the pipe is causing the drain to be blocked, which is a situation that's unlikely to resolve itself. Don't make the mistake of running more water to be sure that the drain is blocked; instead, contact a professional to fix the problem and unclog your blocked drain.


You may be able to solve the problem yourself, but it's also possible to make the problem even worse, and so for that reason, it's always best to contact a professional plumber once you've identified a blocked drain. If you still aren't sure whether or not you have a blocked drain, then calling a plumber can help you know if your drains are blocked.