How to Detect a Blocked Drain in Your Home or Business

Name: Blocked Drain Adelaide
Brand: Adelaide Blocked Drains Plumbing
Rating: 5 (3 reviews)

Posted by Adelaide Blocked Drains Plumbing on 8 Oct 2025

A blocked drain can cause frustration and should be addressed immediately. We have compiled a list with signs to watch for when you are dealing with blocked drains.

Slow draining

Blockages can occur when your bathtub or sink drains slower than usual. This is the most obvious sign of a blocked drain. It could be caused by something as simple as a buildup of hair, soap, or grease.

Foul Odors

Foul odors coming from drains can indicate that there’s a blockage somewhere in your pipes. The smell could be caused by anything from rotting food stuck in your kitchen sink to organic matter caught in your bathroom’s waste pipe.

Strange Noises

A blocked drain can also be identified by gurgling sounds coming from your pipes. These noises are usually heard when water is draining from sinks or toilets. These noises are often caused by trapped air trying to escape from the blockage.

Water backing up

If water backs up into other fixtures like toilets or sinks when you’re using appliances such as washing machines or dishwashers, it’s very likely that you have a blocked drain. Water backup can cause flooding if left untreated.

What To Do About A Blockage

Now that we’ve covered some of the signs of blocked drains let’s take a look at what you should do if you suspect there’s an issue with yours:

Use A Plunger To clear small blockages in your pipes, a plunger is a good choice.
Pour Boiling Water: Pouring boiling water down your drain can help break down soap scum and melt away any grease or fats.
Use a store-bought Drain cleaner. These can cause damage to pipes over time. You can also make your own drain cleaner with baking soda and vinegar.

If none of these solutions work, it’s time to call in a professional plumber. They will have the necessary tools and expertise to locate and effectively remove any blockages in your pipes.

Conclusion

Blocked drains are frustrating and can cost you money. However, catching them early will help prevent future damage. By keeping an eye out for the signs we’ve discussed above, you’ll be able to quickly identify when you need to take action.

Key Takeaways

Slow draining is a common sign of a blocked drain caused by a buildup of hair, soap or grease.
Foul odors emanating from your drains could indicate blockage caused by organic matter stuck in your pipes.
When water drains from toilets or sinks, you will hear gurgling sounds coming from your pipes. This could indicate trapped air trying to escape.
If water is backing up in other fixtures, it could indicate a problem with your drainage system.
Solutions range from using a plunger