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home maintenance  /  March 11, 2020

The Smell of Sewer Gas in Your Bathroom: Causes and Fixes

If you have ever noticed a foul odor coming from the drain in your bathroom, this is likely caused by sewer gas. What causes it? How can it be fixed?

What Causes Sewer Gas

Sewer gas is the natural byproduct of the decomposition of organic household and industrial waste. It is composed of a mixture of gases, including the stench of rotten eggs from hydrogen sulfide, as well as ammonia, methane and other gas compounds.

Identifying the Source of the Problem

Determining where the smell is originating from is the first step in diagnosing the problem. First, fill a glass from the cold-water tap, take it outside and take a whiff off it. Repeat this procedure, but this time with hot water. If you smell sewer gas in both instances, then it’s likely that water supply is contaminated. If only the hot water has that stench, then the water heater is contaminated. If you don’t smell anything from either glass, then the problem is coming from the drain.

Fixing the Issue

Water heater contamination is caused by the reaction of the magnesium in the device’s anode rod to the bacteria. The fix for this is straightforward: replace the rod with an aluminum one and then disinfect the water using hydrogen peroxide.

For the sink or drain, you have to disinfect the pipes to remove the hydrogen sulfide smell. Pour half a cup of bleach down the drains to kill the bacteria. Alternatively, you can pour half a cup of baking soda and then a cup of vinegar. If, after a few hours, the smell of rotten eggs persists, you may have to call in a professional.

For your plumbing services, turn to Handyman Connection® of Orange County. We have expert plumbers and craftsmen to handle everything, from stopping leaks and fixing shower heads to installing washing machine hookups and replacing worn-out drains. Call us today at (714) 288-0077 to get started or fill out our contact form to request a free estimate.

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