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If you notice foul odors coming from your drain, there may be a problem. The first thing you should do is identify what is causing the issue.

• A Dry P-Trap – The curved length of pipe under the sink is called the p-trap. Water is supposed to remain in the curve to serve as a plug that stops gas from the sewer system from coming up. If it goes dry, it will not serve this function and allow odors into your home. Make sure to run water in sinks that don’t get much use to prevent this problem.
• Clogged Vent – Vents are necessary to release gas from the sewer system, usually extending to the roof. If a vent pipe becomes clogged, it could cause gasses to enter your home. Due to the position of the pipe, you may need to call a professional to clear a clogged vent.
• Blocked Drain – If you notice a rotten egg smell, it could be biofilm buildup from a drain clog. To remove the bacteria, you must clear the blockage. This may be done using a drain cleaner product or boiling water.
• Sewer Line Blockage – A blockage may also exist deeper in the system along the main sewer line. When this happens, you will likely have to call a plumber to snake the line.
• Mold Growth – Musty smells can be a sign of mold in the drain. Per the EPA, as long as the infected area is less than 10 square feet in size, you should be able to handle it yourself. Vinegar, boiling water, and baking soda can be used to remove mold.

If you have trouble identifying the cause of drain odors, a professional can help. Call Putman & Son’s Plumbing 24/7 plumbing services located in southeast Michigan to stop sewer smells and remove blockages.