This smell is typically caused by sulfate bacteria that can develop within the tank. This issue usually happens when warm water is left too long in the tank and bacteria builds up in the water. The soft water breaks down the magnesium and creates sulfate gas within the water heater.
How do you get the smell out of a hot water heater?
If the cold water does not contain odors, but the hot water smells bad, then a thorough sanitizing of the water heater tank with 1 to 2 pints of store-bought hydrogen peroxide will eliminate the odor and smell from the water heater.
What do I do when my water smells like rotten eggs?
Increase the water heater temperature to 160 degrees Fahrenheit (71 degrees Celsius) for several hours. This will destroy the sulfur bacteria. Flushing to remove the dead bacteria after treatment should control the odor problem.
How do you get rid of rotten egg smell in water?
Chlorine bleach can effectively remove medium to high levels (over 6 mg/l) of hydrogen sulfide. The chlorine in the bleach chemically reacts with (oxi- dizes) the hydrogen sulfide eliminating the "rotten egg" odor. Chlorine bleach also reacts with iron or manganese, and disinfects water supplies.