Do you detect a foul odor coming from under your bathroom sink? If so, you're not alone. Many homeowners are faced with the unpleasant problem of sewer smell under their bathroom sink. Not only is it embarrassing, but it can also be a sign of a larger issue with your plumbing. In this article, we'll discuss the top 10 causes of sewer smell under bathroom sink and provide solutions to get rid of it for good. Sewer Smell Under Bathroom Sink: Causes and Solutions
Before we dive into the common causes of sewer smell under bathroom sink, let's first address how to eliminate the unpleasant odor. The best way to get rid of sewer smell is to identify and fix the root cause. However, in the meantime, you can try some DIY fixes to mask the smell. Sprinkle baking soda down the drain and follow it with white vinegar. Let it sit for a few minutes before flushing it with hot water. You can also try pouring a cup of bleach down the drain and letting it sit for 30 minutes before flushing. How to Get Rid of Sewer Smell Under Bathroom Sink
Now, let's explore the top 10 main causes of sewer smell under bathroom sink. Common Causes of Sewer Smell Under Bathroom Sink
The most common cause of sewer smell under bathroom sink is a dry P-trap. The P-trap is the curved pipe under the sink that holds water to prevent sewer gases from coming up through the drain. If the water in the P-trap evaporates, it can cause sewer smell to seep into your bathroom. This can happen if the sink hasn't been used in a while or if the P-trap is leaking. 1. Dry P-Trap
A clogged drain can also lead to sewer smell under bathroom sink. When debris, hair, and other substances build up in the drain, it can create a blockage that traps bacteria and causes an unpleasant odor. 2. Clogged Drain
Over time, pipes can become corroded, cracked, or damaged, leading to sewer smell under bathroom sink. If your pipes are old or worn out, they may need to be replaced to eliminate the smell. 3. Old, Worn Out Pipes
Proper ventilation is crucial in preventing sewer smell under bathroom sink. The vent pipe allows air to escape from the drain, preventing a buildup of gases that can cause foul odors. If the vent pipe is blocked or damaged, it can lead to sewer smell in your bathroom. 4. Faulty Ventilation
If you've tried all the DIY fixes and the sewer smell persists, it could be a sign of a larger issue with your sewer line. A clogged or damaged sewer line can cause backups and unpleasant odors in your bathroom. 5. Sewer Line Problems
If your sink was not installed correctly, it can lead to sewer smell under bathroom sink. This is because the sink may not be properly connected to the P-trap, allowing sewer gases to escape through the drain. 6. Improperly Installed Sink
A cracked toilet seal can also cause sewer smell under bathroom sink. The toilet seal is a wax ring that seals the connection between the toilet and the floor. If the seal is damaged, it can allow sewer gases to escape and cause an unpleasant odor. 7. Cracked Toilet Seal