Bathroom Sink Drain Smells Like Sewage

A smelly bathroom sink drain is a common household problem that can be caused by a variety of factors. One of the most common causes is a buildup of hair, soap scum, and other debris in the drainpipe. This can create a blockage that prevents water from draining properly, and can also lead to the growth of bacteria and mold. Another common cause of a smelly sink drain is a faulty or damaged P-trap. The P-trap is a U-shaped section of pipe that is installed under the sink. It is designed to trap water and prevent sewer gases from escaping into the bathroom. If the P-trap is damaged or not installed properly, it can allow sewer gases to leak out, which can cause a foul odor in the bathroom.

If you are experiencing a smelly bathroom sink drain, there are a few things you can do to try to fix the problem yourself. First, try cleaning the drain with a drain cleaner. There are a variety of drain cleaners available at most hardware stores. Be sure to follow the directions on the package carefully. If a drain cleaner does not work, you may need to remove the P-trap and clean it. To do this, turn off the water supply to the sink and then loosen the nuts that hold the P-trap in place. Once the P-trap is removed, you can clean it with a brush and some hot water. Be sure to rinse the P-trap thoroughly before reinstalling it.

If you are unable to fix the problem yourself, you may need to call a plumber. A plumber can snake the drain to remove any blockages, and can also check the P-trap to make sure that it is installed properly. If the smell is particularly bad, the plumber may need to use a sewer camera to inspect the drainpipe for any damage.

Here are some tips to help prevent a smelly bathroom sink drain:

Clean the drain regularly with a drain cleaner.
Avoid pouring grease or food down the drain.
Run hot water down the drain for a few minutes every day to help keep the drain clear.
If you have a garbage disposal, run it regularly to help grind up food particles that could clog the drain.
If you notice a bad smell coming from the drain, try cleaning the P-trap.