The Water Smells Like Sulfur in one Faucet: How to Solve It?

Whenever you get sulfur bacteria in the water, it will most probably run through all of your home’s pipelines and valves, but it may only emerge out of one. The water at one faucet would then smell like sulfur.

Does anyone have any idea why this is the situation? This is a very frequent query. Continue reading if you’re interested in learning more.

Causes of sulfur smell in the water

There are several causes for this issue. Here are a few examples.

  • Bacteria is one of the most prevalent sources of sulfur odors in water. Bacteria may flourish in water with high quantities of naturally produced sulfates and create hydrogen sulfide gases. This gas makes water a distinctive rotten egg odor.
  • Sulfur odors in water can also be caused by decomposing organic debris like leaves and fungus, as well as chemical pollutants like sulfites or lead.

If you feel your freshwater has a sulfur odor for any of these causes, have it tested by your local water company or a trained specialist.

Reasons for sulfur-like smell in one faucet

There are many possible reasons why your faucet could smell like sulfur, based on the listed reasons for the sulfur smell in the water.

1. Bacteria inside the water heater or tank.

One main concern is that your water heater is malfunctioning and emitting sulfur dioxide gas. This might be caused by bacteria developing in your hot water system or heater, resulting in a sulfur odor coming from your faucet.

The existence of unfavorable bacteria in the water might also induce sacrificial anode rod degradation.

2. Oxidation in the pipes or plumbing system

A foul odor may be emanating from your faucet because of deterioration in the pipelines.

Particles in the water may start building up on the wall of the pipe throughout time, forming a thin layer. Iron is discharged into the water as it runs through the deteriorated pipes, causing the odor.

3. Chemicals that have leached into the water supply from upstream

When it relates to water purity, upstream pollution is a major issue. Chemicals may contaminate water and produce a variety of issues, including sulfur pollution. This can alter the flavor and odor of the water.

4. Algae formation in the water from the well

Algae development in the well water might also be a factor.

For a variety of reasons, algae in your groundwater might generate a sulfur odor in your faucet.

First, when the algae decompose, sulfur compounds are released into the water.

Secondly, the water may contain a high concentration of sulfates, which can combine with the algae to produce the same sulfur odor.

Finally, if the well is autoclaved, the oxygen in the water might combine with the sulfates to produce the stench.

Why does only one faucet smell like sulfur?

To figure out what’s creating the noxious sulfur odor, you’ll need to figure out which faucet is causing it. Would it be the cold-water faucet or the hot-water faucet that’s causing the problem?

Cold water

Because of the existence of sulfate-reducing microorganisms in your water system, your cold-water faucets may stink like sulfur. This can occur as a result of pollution in the water supply, such as from a well, or contamination in the water supply upstream. Due to the increased iron percentage in the water, this condition might potentially be caused by corroded water pipes.

Hot water

The existence of hydrogen sulfide in your hot water system might be causing the stench from your hot water faucet. This might be caused by electrode rod degradation, extra ions, or insufficient flow of water in the water heater. 

You May Read:How to Remove Flow Restrictor from Kitchen Faucet

How to get rid of the sulfur smell from water

There are a few options for resolving this issue. Here are a few options.

1. Bleach with chlorine

If the well water has a sulfur odor, it’s most probably because of the existence of sulfates. The most frequent technique to get rid of the sulfur smell is to add a bacteria-killing substance like chlorinated bleach to the deep water.

Chlorine reacts with oxygen and hydrogen sulfide in the water, removing the sulfur odor. Chlorine bleach is also a strong sanitizer since it interacts with minerals such as manganese and iron, destroying any bacteria or germs that may be causing the stink.

2. Hydrogen peroxide in a condensed solution

Utilizing highly concentrated hydrogen peroxide to eliminate the sulfur smell from water also can be useful.

Turn off the well’s supply of water and drop a concentrated dose of hydrogen peroxide down it. The advantage of hydrogen peroxide would be that it decomposes into water and oxygen, leaving no chemicals behind.

3. Reinstall the water heater’s anode rod.

If the water heater stinks like sulfur, it’s most probably due to the anode rod, as previously stated. The anode rod is in charge of preserving the interior of the tank against rusting, and it can corrode and become ineffective throughout time.

Changing the anode rod is a very straightforward procedure that you can complete on your own. Merely remove the old one and replace it with a new one.

4. Filtration method for water

A water filtering system may be used to eliminate the sulfur smell in groundwater in a few different ways.

Carbon filters: Activated carbon filters are particularly successful in decreasing small levels of hydrogen sulfide, which is usually the source of the sulfur odor in water. The carbon filter should be changed regularly to maintain the water feeling fresh.

Iron filter: If your water contains iron, you can use an iron filter. These filters will lessen the sulfur smell by removing iron and chrome from the water, as well as mild levels of hydrogen sulfide.

5. Ventilation of the water

Aeration is the process of adding oxygen to the water to aid in the decomposition of pollutant atoms and the elimination of odor.

using an air compressor or an air extractor to add tiny bubbles further into the water is one technique to achieve this. This will aid in the rapid dissolution of hydrogen sulfide ions.

6. Have your water supply assessed.

If you notice a sulfur odor in your groundwater, it’s critical to have it analyzed to discover the cause of the odor.

There are several causes why water may have a very sulfur odor, and each one requires a different remedy.

If you can’t figure out what’s causing the odor on your own, it’s advisable to speak with an expert who can evaluate your water and assist you in coming up with a cure.

Can you shower in water that smells like sulfur in one faucet?

Absolutely, showering with sulfur-scented water is quite safe. Sulfur is a naturally produced substance that may be found in drinking water across the world.

The sulfur smell derives from hydrogen sulfide gas, which would be a result of an organic material breakdown. While the odor is undesirable, it is not harmful to your health.

If you’re worried about the odor, you may use a filtration system or add lime juice to your bath water to help negate it.


Sulfur-causing germs in the water heaters, damaged anode rode, deterioration in water mains, and fungus in well water are all possible causes of sulfur-smelling water in one faucet.

There are several options for resolving the issue. I hope you found this article useful.

Leave a Comment