Sulfur Smell In Your Hot Water? Here’s 4 Ways To Fix It.

Sulfur Smell In Hot Water is a Widespread Issue

Sulfur smell in hot water

Plumbing and water treatment companies are often faced with complaints pertaining to bad odors emanating from the water heaters. These unpleasant smells are commonly described as ”water smells like rotten eggs” or ”sulfur smell in hot water”.

The odor issues can cause numerous problems for the inhabitants, and often becomes a topic of conversation when guests are around. Today, we present the optimal, most efficient, method to get rid of this sulfur smell.

What Are The Causes of This Sulfur Smell In Hot Water?

First and foremost, it is worth noting that the sulfur smell in water can be caused by a number of different reactions.

If the odor is present only in your hot water, it is usually created by the presence of sulphate-reducing bacteria in your hot water tank. In some cases, it can also be caused by a chemical reaction between your magnesium anode and the hot water.

If the odor is present in both hot and cold water, the problem usually stems from the presence of hydrogen sulfide gas in the water underground. Since it’s coming from your water supply, this problem is the most expensive to fix.

Now that you know the causes of these nauseating smells, let’s solve the problem!

Here Are The Best Ways to Stop The Sulfur Smell

Preventing the Development of Sulphate-Reducing Bacterium 

Generally seen living in a low-oxygen environment such as water heaters, deep wells, as well as in the plumbing network, this sulfate reducing bacteria take their energy from sulfur. Since they usually proliferate in hot water, it is standard for the rotten egg smell to amplify when faced with these environments.

Temporary Solution: Concentrated Chlorination Treatment 

A temporary solution would be to do a concentrated chlorination treatment (chlorine bleach), which involves adding a predetermined amount of chlorine to your well and circulating the water through all your ducts. Once the smell of chlorine is noticeable throughout your home, simply let the water run until the smell disappears.

It is not recommended to use or consume this water for 24 hours after treatment, which makes this solution much less convenient. In addition, since this is a temporary solution, keep in mind that odors will be back in 1 or 2 months.

Permanent Solution: Corro-Protec Powered Anode

Since 2012, there’s a new way to solve this sulfur smell in house water and it’s guaranteed to work. By creating an environment in the water heater where the sulphate-reducing bacterium is not able to survive, the Corro-Protec anode will be able to stop that sulfur smell in only 24 hours.

In addition to being guaranteed for 20 years, the Corro-Protec only takes 15 minutes to install. Today, more than 55,000 households have adopted this solution and solved their hot water odor problems for good.

Corro-Protec Powered Anode Rod

Rectifying This Reaction Within Your Water Heater 

Each water heater is equipped with a magnesium anode rod in order to temporarily limit corrosion within the tank. In most cases, the smell of sulfur will be caused by high magnesium content water that comes into contact with the original anode already present within the water heater.

If the odor issue comes from the reaction between the magnesium anode and your water, several options are available to you. However, it is important to know that these options are not all good in the long run.

Remove Magnesium Anode (NOT RECOMMENDED) 

It would be possible to eliminate these odors by completely removing the magnesium anode from the tank. However, doing so is very dangerous for the water heater because it will then be without its protection against rust. The weakest and most exposed places will then rust faster forcing you to change your tank after only a few years.

Replace the Magnesium Anode With an Aluminum Anode 

It is also possible to replace the magnesium with an aluminum anode. Water will no longer have a poor chemical reaction while supported by the new anode, and odors should completely disappear.

However, even though aluminum anodes are cheaper than magnesium anodes and last longer, the main issue is that as the anode dissolves, debris tends to harden and sink to the bottom of the reservoir. This can potentially end up in your faucets and cause breakage. In addition, some scientific research raises concern regarding aluminum residues found in water which could have adverse effects on people’s health.

Install an Powered Anode 

In conclusion, a powered anode is the ideal solution to these problems, because in addition to eliminating this sulfur smell in hot water in a few hours, these anodes are made from insoluble titanium, which limits their debris.

In addition, this technology requires no maintenance and is good for several years. Corro-Protec anodes are easy to install in your existing tank and will fix the problem, no matter what the cause of the odors, in just a few hours.

Our house was having the “rotten egg” smell in our hot water for some time after putting in a new hot water heater 9 months prior. After several attempts to shock our water and asking around for suggestions, we took to the internet and found this Corro-Protec Anode on a YouTube demonstration.

Best $120.00 we have ever spent. Anode rod was easy to install and smell was 90% gone immediately. Was completely gone by my morning shower so I was happy!!!

Laura P, Facebook Reviews

Other Kind Of Smell

It is important to know that a water softener will not solve the sulfur smell problem. Be aware that there are other kinds of odors in hot water tanks. This article is only about how to deal with sulfur odor problems. If you have other issues, you can read our full article :

See how Corro-Protec anode can stop sulfur smell in your hot water.


  1. Bill Lanting on September 7, 2020 at 11:36 am

    We have well water. Our hot water heater is a rental unit and it was replaced two years ago. Since then, we have had a rotten egg smell in the hot water. Many attempts were made be the rental company to correct the problem. They even replaced a one year old water heater with another new one. All attempts made by the rental company failed to solve the problem. in desparation, I told them that i had read about Corro-Tech’s power anode and i wanted to buy it and install in on their rental unit. They agreed. Results are fantastic!! Horrible smell is completely gone…..and the rental company didn’t even know about this product. I told two technicians they should know about this product and install it for situations like ours. Thank you Corro-Protec!!!!

  2. Doris K on August 28, 2020 at 4:49 pm

    Can this be installed in a camper hot water tank?

  3. judy on August 25, 2020 at 4:46 pm

    will this fix in or on a hot water tank in a mobile home

    • Corro-Protec on August 27, 2020 at 8:22 am

      Hello Judy,

      Yes, it will solve the smell.


  4. Emma T on August 11, 2020 at 9:06 am

    ok if I understand well if you have some sulfur smell in your hot water, you just need to install this corroprotect anode?

  5. Jean Demers on July 26, 2020 at 10:29 am

    I will explain my question in English and French to help with the discussion. I live in the countryside with a well and a water softener system. I installed a new water heater in September 2019. A few weeks later there was a very strong smell of sulfur. My supplier (Rona) sold me an aluminum anode and two small 2 “X 1/2” zinc rods. Unfortunately the smell returned. I intend to install your Corro-Protec anone. No problem to remove the aluminum anote but impossible to remove the two small zinc rods. I would like to know if the result will be positive despite the zinc rods?

    • Corro-Protec on July 27, 2020 at 11:43 am

      Hi Jean,

      Yes, the Corro-Protec anode will take care of the rotten egg smell even if you still have some zinc rod inside the tank.


  6. Ruth D. on July 24, 2020 at 7:49 am

    We have a new hot water tank. When it was installed the temperature was set at the lowest setting and we seemed to run out of hot water quicker than we expected. We also noticed the sulphur smell and that it was worse in the morning. Our installer increased the temperature setting and we have noticed an improvement. Do you think we should still replace the anode?

    • Corro-Protec on July 27, 2020 at 11:44 am

      Hello Ruth,

      Yes, replacing the anode with the Corro-Protec powered anode will fix the smell.


  7. peter on June 16, 2020 at 8:38 am

    Hello is it possible to remove the anode rod without draining the water or turning water supply off?

    • Corro-Protec on June 17, 2020 at 9:16 am

      No, you could burn yourself badly and create water damage in your home. When changing the anode, you need to drain some water from the tank and turn it OFF.

    • Krista Priest on August 11, 2020 at 8:56 am

      Hi there. I only have this smell coming from my bathroom sink. My shower and kitchen sink have no smell. Why is this and also my hot water heater was just replaced last August.

      • Corro-Protec on August 11, 2020 at 9:02 am

        If the smell is coming from only one faucet, the problem isn’t related to the hot water tank.

        You can try to :
        Remove the aerator, clean it and bleach it.
        Remove the faucet, soak in Iron Out for 24 hours and reinstall.
        If the solution above does not work, you might need to replace the faucet.

        Hope this helps,

  8. Tom Wong on June 7, 2020 at 10:53 pm

    I have a 20 years old power vent Gas water heater. Whenever the water heater motor running or start boiling the water it will have a smell like rotten egg odour came out from the hot water tank. The Cold and hot water are fine, no smell. Any idea what’s wrong with the tank?


    Tom Wong

  9. T. Taylor on April 27, 2020 at 8:09 am

    We had an expensive system put on our well due to high Iron and magnesium, along with an acidic pH and a bit of hardness. Improved the water quality dramatically; however, with two 50 gallon water heater, the hot water side still smelled of rotten egg or “metallic” in a sense.
    I researched and bought a Corro-Protec for each and installed them two days ago. In less than 24 hours there was no detectable odor AT ALL from our hot water! None!
    I did have a minor glitch in that one of the two power supplies, though lit green, was humming loud enough to be heard from several feet away, but, in an after hours text to the “Contact Us” number, I got a response in minutes asking for my address to send another power supply!
    I definitely appreciate the responsiveness and felt compelled to chime in on just how well this product has worked so far! Worth every penny! Installation, besides getting to and removing the original anode, is actually pretty easy, as well.

    • Chris Adams on June 4, 2020 at 10:21 am

      Thank you for your detailed comment. I definitely learned a lot!

  10. Jessi Olsen on April 3, 2020 at 9:04 pm

    we have naturally high sodium water – we bought this place and it had a brand-new hot water tank. After a couple months of living here, it started to smell when we showered and used hot water… We tried shocking our hot water tank with hydrogen peroxide, it worked great but, unfortunately, the effect only lasted 4-5 weeks before the smell returned. We then tried to replace the magnesium rod with an aluminum zinc rod. We put some hydrogen peroxide in when we did the replacement, but low and behold, smell returned after 4 weeks same as the magnesium anode. My question is, what’s next? Do we need to shock the well? Does the electric titanium anode work if we already know a zinc aluminum anode does not?

    • Corro-Protec on April 5, 2020 at 7:20 pm

      Hello Jessi,

      If you replace the magnesium anode with an aluminium one and you still have the smell, it means you have the sulfur reducing bacteria inside your water heater. The only way to solve that will be to install one of our Corro-Protec Powered Anode. This way, you won’t have this rotten egg smell anymore!

  11. Pat on February 25, 2020 at 10:44 pm

    Couldn’t believe it but this product took care of our sulfur smell in hot water couple minutes after installation!!! Thank you sooooo much !

    • Yeimi on July 26, 2020 at 11:38 pm

      Hi I just moved in to this rental they changed the whole water pump unit and put in a new one but water is still smelling horrible both hot and cold I keep asking my landlord to pls fix it and her handyman just keeps telling me to wait that it will go away its been almost 3 months and still having very smelly water it seems like he dont want to fix the problem a have little infants and toddlers and having to wash bottles with this smelly water is not an option for me so have been buying gallon water for washing his bottles who can I call to check out the problem

  12. Sandy on February 7, 2020 at 9:52 pm

    Can you help me locate the anode rod on the Rheem XE50T10HD50U1?

  13. Nikki on February 4, 2020 at 10:32 pm

    Does this work if you have a salt water softening system?

    • Corro-Protec on February 5, 2020 at 11:17 am

      Hello Nikki,

      Yes, it’s working with a salt water softener!


      • Dominique Routhier on July 27, 2020 at 12:31 am

        Hi, we installed a Corro-Protec after years of looking for a solution to the very unpleasant odor coming out of our hot water in our cottage. This was a miracle! Now we have a trailer by the cottage with the same issue. It’s a 10 gallon little tank with no anode! Is it possible to add one? That would be wonderful

    • Pat on February 25, 2020 at 10:44 pm

      We have a water softener and it took care of the smelly water immediately

  14. Drew on January 29, 2020 at 5:14 pm

    I have a 38 gallon water heater is there a certain size anode I need to buy?

    • Jimmy on April 23, 2020 at 3:11 am

      I cannot find any information here on the location of the anode in the hot water heater can you show me where to find that information

      • Corro-Protec on April 23, 2020 at 8:22 am

        Hi Jimmy,

        The anode should be located under a plastic cap on the top of your water heater. If you are not sure, you can search the model number online to find the owner manual and it will be detailed where the anode is.


  15. Stephanie Warner on January 27, 2020 at 8:01 pm

    We have a bad smell in our laundry which has the hot water cylinder in it. The smell varies in strength but seems worse in the mornings when we are using the hot water most often. There doesn’t appear to be any smell coming from the water out of the taps though. Any ideas?

    • Corro-Protec on January 30, 2020 at 9:13 am


      If you have smell coming from only one specific place, the cause of the smell is somewhere in the fixtures or pipes supplying this specific faucet.


  16. Joseph on January 14, 2020 at 9:54 am

    Just installed mine a wk ago was pretty sceptical of it working but so far it has worked exactly as promised!! Worth the money!!

  17. Tare Delaney on November 10, 2019 at 9:54 am

    when you bath in that water when it has a bad smell odor real loud would it harm your body or your lungs or make you sick smelling it

    • Corro-Protec on November 11, 2019 at 8:14 am

      Hello Tare,

      We are specialized in cathodic protection and unfortunately we can not answer medical questions. The different scents in hot water can come from various sources, if in doubt, you should have your water analyzed by experts in water treatment.



  18. Tom on November 3, 2019 at 7:04 am

    I don’t have any odor in my cold water. I still have sulphur odor in my hot water after removing the anode. Will this product still remove the smell?

    • Corro-Protec on November 5, 2019 at 2:24 pm

      Hello Tom,

      Yes, our Corro-Protec powered anode rod will take care of that sulfur smell in your hot water!


  19. Dennis Aldrich on October 15, 2019 at 12:33 pm

    I dont have an anode rod in my electric water heater, how can i install this rod?

  20. Mike wallace on October 6, 2019 at 8:27 am

    How long is the rod, have limited space above water heater.

    • Corro-Protec on October 7, 2019 at 2:02 pm

      Our Corro-Protec Anode is 12 inches long!

      • Bob on June 25, 2020 at 5:48 pm

        I have a 5th wheel and the rotten egg smell is in the bathroom sink only both hot and cold water. How do i get rid of the smell?

        • Corro-Protec on July 2, 2020 at 7:57 am

          Hello Bob,

          If the smell is coming from only one faucet, the problem isn’t related to the hot water tank.

          You can try to :
          Remove the aerator clean and bleach it.
          Remove the faucet soak in Iron Out for 24 hours and reinstall.
          If the solution above does not work, you might need to replace the faucet.

          Hope this helps,

  21. Matt B on September 14, 2019 at 2:22 pm

    We have a tankless water heater and seem to be having smell issue with our hot water. Our old heater had a tank and had the same odor problem. Is this recurring smell caused by the same problem?

    • Corro-Protec on September 16, 2019 at 8:05 am

      It is very rare to have this smell with a tankless water heater, we would like to know more about it, we sent you an email from

      • John on November 25, 2019 at 9:46 pm

        I have this same issue…tankless water heater, but we get a few seconds of rotten egg smell when using the hot water.

  22. Steven on June 4, 2019 at 9:03 pm

    We live in a motor home park. Other people here have the same thing. We all live in the northern Salem and the water come from the river.

  23. Jason on May 29, 2019 at 10:54 pm

    I have a unit on our 55 gallon tank and love it. Fixed our rotten egg smell quickly. I am curious how the power supply works. Is it a current-limiting supply, or is the current a result of the 24V applied potential and some internal resistance in the anode rod? I ask because our supply went out and wondered if I could use a non-current limited higher wattage 24V supply as a replacement.

    • Corro-Protec on May 31, 2019 at 5:37 pm

      Hello Jason, you can’t use non-current limited power supply for your Corro-Protec Anode. To ensure you have optimal protection, you need to use our Corro-Protec Rectifier. Please contact-us if you have any problems at

      Thank you,

  24. Laura on May 24, 2019 at 8:55 am

    Our house was having the “rotten egg” smell in our hot water for some time after putting in a new hot water heater 9 months prior. After several attempts to shock our water and asking around for suggestions, we took to the internet and found this product on a YouTube demonstration. Best $100.00 we have ever spent. Anode rod was easy to install and smell was 90% gone immediately. Was completely gone by my morning shower so I was happy!!!

  25. Susan Brown on March 14, 2019 at 11:59 am

    I had fixed my odor problem with an aluminum rod a few years ago, but I have hard water issues, and its led me to replace the anode too often. We are happy to have found a long term solution

    • Anna Beard on May 16, 2019 at 5:41 pm

      Exactly how did you fix the odors with an aluminium rod?

      • Corro-Protec on May 16, 2019 at 5:48 pm

        The aluminum anode does not really eliminate odors.

        By removing the magnesium anode already present in your tank, the chemical reaction between the magnesium anode and your hot water will no longer continue and the odors should stop. We tell customer to replace the magnesium anode with a aluminium or a titanium anode because It is very important to have protection against corrosion in your water heater! Take note that the magnesium anode is not the only factor that can create odors. Powered titanium anode is the ultimate solution to cancel all rotten egg smell in hot water.

  26. Arnold on February 20, 2019 at 10:21 am

    We also have odor problems, but they are present in cold water and in hot water. However, it looks like it’s amplified in hot water.
    Could an anode like yours solve this problem?

    • Corro-Protec on February 27, 2019 at 1:31 pm

      Yes, the smell in your hot water will no longer be amplified.

      • Phil Miller on February 2, 2020 at 10:05 am

        What about the cold water smell?

        • Corro-Protec on February 4, 2020 at 7:49 am

          Our Powered Anode only stop the smell in hot water!

  27. Mark on February 9, 2019 at 11:49 pm

    Interesting! My neighbor advised me to simply remove the magnesium anode… I will continue my research because it doesn’t seem to be a very good advice from him. Does your product work every time for water odors?

    • Corro-Protec on February 11, 2019 at 9:10 am

      Yes it will! If not, we have a 90 Day Money Back Guarantee!

    • Bonnie Casto on September 20, 2019 at 5:06 pm

      We have stinky bad rotten egg smell in our got water, we installed a new hot water tank 2 weeks ago , how can we fix please any info will help me ??????

  28. John Rickwood on February 2, 2019 at 11:22 am

    Thanks! No more smell in our hot water few hours after the installation.

    • Kim & Steve on January 20, 2020 at 11:27 am

      Hello. We are having an issue with smelly water from a hot water faucet. However it’s only from one water source in our home, in our bathroom sink. The tub kitchen and other sources I’m our home have no issues with odour. Can someone advise.

      • Corro-Protec on January 20, 2020 at 12:25 pm


        If you have smell coming from only one specific faucet, the cause of the smell is somewhere in the fixtures or pipes supplying this specific faucet.


        • Scott R. on January 31, 2020 at 11:52 pm

          OK, I get that the smell is coming from the fixture or the pipes serving that fixture, but what could be the cause when you have an isolated condition like this?

          • Corro-Protec on February 6, 2020 at 11:10 am

            It could be caused by bacteria that have grown in a pipe, part of a pipe or vent that is blocked, or due to a leak. We recommend that you do business with a plumber to find a permanent solution to this problem.

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