Bathroom Sink Smells Like Sewer

A bathroom sink that smells like a sewer can be a major nuisance. Not only is it unpleasant to use, but it can also be a sign of a more serious problem with your plumbing. If you're dealing with this issue, there are a few things you can do to try to fix it.

First, check the P-trap. The P-trap is a U-shaped pipe that is located under the sink. It is designed to trap water and prevent sewer gases from escaping into the bathroom. Over time, the P-trap can become clogged with hair, soap scum, and other debris. If this happens, it can cause the sink to smell like a sewer. To clean the P-trap, simply remove it from the sink and clean it out with a drain cleaner. Once it is clean, reattach it to the sink and test it to make sure it is working properly.

If cleaning the P-trap doesn't solve the problem, the next step is to check the vent pipe. The vent pipe is a pipe that runs from the sink to the roof of the house. It is designed to allow sewer gases to escape from the plumbing system. If the vent pipe is clogged, it can cause sewer gases to back up into the sink and cause it to smell. To clean the vent pipe, you will need to access the roof of your house. Once you are on the roof, locate the vent pipe and remove any debris that is blocking it. Once the vent pipe is clean, test it to make sure it is working properly.

If cleaning the P-trap and the vent pipe doesn't solve the problem, the next step is to check the sewer line. The sewer line is the pipe that carries wastewater away from your house. If the sewer line is clogged, it can cause sewer gases to back up into the sink and cause it to smell. To clean the sewer line, you will need to call a plumber. A plumber will be able to use a drain snake to clear the clog and restore the flow of wastewater.

If you've tried all of these steps and the sink still smells like a sewer, it's possible that there is a more serious problem with your plumbing. In this case, you will need to call a plumber to diagnose and repair the problem.

Here are some additional tips for preventing your bathroom sink from smelling like a sewer:

Run the water in the sink for a few minutes every day.
Pour a cup of baking soda down the drain once a week.
Avoid pouring grease or oil down the drain.
If you have a garbage disposal, run it with cold water for a few minutes after each use. This will help to flush away any food particles that could clog the drain.

By following these tips, you can help to prevent your bathroom sink from smelling like a sewer.