Posted by John Mariol
15.05.2023

Why does my water smell like rotten eggs?

h2s

The smell of rotten eggs in water is usually due to the presence of hydrogen sulfide gas (H2S). Hydrogen sulfide is produced naturally in some groundwater and wells when sulfur-reducing bacteria break down organic matter in the absence of oxygen. This can happen in areas where the water table is deep or in places where there is stagnant water.

What is hydrogen sulfide gas (H2S)

Hydrogen sulfide gas (H2S) is a colorless gas with a distinctive odor that smells like rotten eggs. It is formed naturally from the decay of organic matter and is produced by some types of bacteria in anaerobic (oxygen-free) conditions. 

Why does my well have hydrogen sulfide gas?

Hydrogen sulfide is common to find in wells.  It is a result of a variety of factors

  1. Natural sources: H2S can be produced by sulfate-reducing bacteria in the soil, which convert sulfates in the water into hydrogen sulfide gas. This process can occur in wells, springs, and other sources of groundwater.
  2. Industrial activities: Certain industrial activities, such as oil and gas production, can release hydrogen sulfide into the groundwater.
  3. Sewage systems: Decaying organic matter in sewage systems can produce hydrogen sulfide, which can then enter the groundwater.
  4. Corrosion: Corrosion of metal pipes and fixtures can release hydrogen sulfide into water.

Can it be removed from my water?

Yes! In order to reduce the levels of hydrogen sulfide in water, it is important to identify the source of the problem and implement appropriate treatment methods. This may involve the use of water treatment systems, such as oxidation or aeration.  Vern Dale Water Experts offers free consultations, including water testing, and show you options that will work for your home or business.  Click here to set up a free consultation today!