Shopping Cart Items: 0   Sub-Total : US$0.00
Welcome, Guest ( Login )
Celebrating 34 years providing high quality products and advice.
Our Local Time Is 12:26:37 AM.
Call us at 818-786-0600. We are here to help!
Laboratory Fume and Biological Hood Enclosures We Offer Huge Savings
on Fume Hoods and Enclosures for your laboratory.
Laboratory Water Systems Laboratory Process Filters Laboratory Equipment Water Treatment

APS TechNotes See all articles

Rotten Egg or Fish Smell From Water Heaters

Hydrogen Sulfide (H2S) In Water Heaters  

Sometimes water smell problems may only be present in the household hot water.

Also see :All about rotten egg smells and hydrogen sulfide

If you have a smell problem, first run the cold water by itself and check it. Then run the hot water by itself and check it.

This condition may be caused by a biochemical reaction caused by:

  • sulphates in the water
  • sulphate reducing bacteria
  • a magnesium rod in the hot water heater
  • organic matter in the water.

    If the odor problem in the water heater is caused by heat loving sulphate reducing bacteria, disinfect the water heater with chlorine bleach or hydrogen peroxide.

    Sometimes the reaction with the magnesium rod is the cause of odor problem. The purpose of the magnesium rod is to prevent corrosion of the water heater. Removing the magnesium rod will often prevent the odor problem, but will void the warranty and lead to the possible earlier deterioration of the tank. If corrosion is a concern, the magnesium rod can be replaced with a zinc rod.

    Try disinfecting the tank with chlorine bleach or hydrogen peroxide first before using any of the more drastic measures.

    Another thing to try is to turn up the temperature on the heater. Temperatures 140F and above may kill the bacteria and solve the problem.   

  • Open To The Public

    Why Use APS??

    Independent Reps Wanted

    Need Live Help?

    Contact Us
    818-786-0600

    Short Lead times.
    Lab Water Deionizer

    Best
    Lab Water System

    Top Sellers

    Most Popular
    Fume Hoods

    Glassware Washers

    Images are representative of the products. Images may or may not be of the actual product. If it is important e-mail us for an actual image if available.

    * Flat Rate UPS shipping when able to ship via UPS and is in the USA excluding Hawaii and Alaska.
    Larger Items may not be able to ship via UPS, in that case freight charges will be quoted seperately.
    International shipping will be quoted after the order is placed. You will have the opportunity to cancel before we finalize your order.

    Terms and conditions
    Credit Application
    Privacy Policy
    Google Apps
    List All Products