How to Spot a Leaking Drain Pipe: 4 Signs to Watch Out For

It can be quite difficult to spot leaking drain pipes in your walls. The problem with this is that the issue only becomes obviously visible once it has gotten out of hand. At this point, fixing the leaking drain pipe will prove to be costly. 

The key here is to spot the problem early and to address it as soon as possible. It goes without saying that this is easier. Luckily, there are tell-tale signs that there is a problem with your drain pipe. If this is something that you want to learn more about, read on as we discuss the four signs to watch out for in order to spot a leaking drain pipe in your wall. 

Foul Odors

If you start noticing a foul odor seeping out of your walls, then it’s safe to assume that your drain pipe may be leaking. That foul odor originates from all the waste that goes through your pipes and is now leaking through your walls. You’ll want to address this problem immediately as not only will the gases that seep out be putrid but they can also be toxic as sewer gas includes harmful chemicals such as sulfur dioxide and methane.

Mold Growth

Mold requires moisture to grow on surfaces. If your drain pipes are leaking, this will provide enough moisture for mold to develop and grow. Mold should be obvious once it starts to develop, as you’ll surely notice black and green spots appearing on your walls and floors. Mold can grow on pretty much any surface, so you’ll always want to be on the lookout for it. If you do spot mold, it would be best to contact a professional as the mold can be hazardous to your health. Mold produces mycotoxins that can cause nausea, fatigue, eye irritation, lung irritation, and headaches.

Wall Damage

Aside from mold growing on your walls, the excess moisture will also end up damaging your walls. This is especially true for wooden walls as the wood will absorb all the moisture and will start to disintegrate. If you notice soft and spongy spots on your wall, then you may want to get your drain pipes checked.

Pest Infestation

Lastly, pest infestations can also indicate leaking drain pipes. This is because pests such as rats and mice can fit through the busted pipes and begin to lay siege on your home. If you’ve noticed an unexplained influx of pests, it would be wise to have your pipes checked for damage as the pests may be using them to infiltrate your home.


As you can see, spotting leaking drain pipes isn’t as hard as you may think it is as long as you know what you’re looking for. Be sure to keep the information that we’ve listed here in mind so that you can avoid costly repairs down the line. If you do spot a leak, it would be best to call in a plumber as soon as you are able.

If you are in need of plumbing services in Glendale, CA, then you’ve come to the right place. We here at CANDU have established long-term relationships with satisfied clients using preventative solutions that avoid trouble before it happens. We also offer emergency plumbing solutions as well as new construction plumbing for both commercial and residential spaces. For more information on our services, visit our website today!

Jeremy Parker

Published by
Jeremy Parker

Recent Posts

How Can I Use Leftover Waste Water to Flush My Toilet?

If you don't have running water and don't have the luxury of using bottled water,…

2 days ago

What is the Appropriate Height For a Gas Water Heater?

When installing a gas water heater, there are several things to consider. The height must…

2 days ago

What is the Safest Type of Pipe for Drinking Water?

In today's plumbing, there are several options to consider. Some homes are built with lead,…

4 days ago

So Your Water Heater’s Making Weird Noises? Read This! ​​

Plenty of things go into running a house. One of the key parts is the…

5 days ago

Galvanized Steel Pipe Benefits Home Plumbing

If you are looking for information about Galvanized Steel Pipes, you've come to the right…

5 days ago

What is the Most Common Pipe Used in Houses?

Various materials have been used for pipes since the early days of plumbing. Lead pipes…

5 days ago