Home Cleaning Expert Solutions to Remove Bad Odors from Water Tanks Permanently

Expert Solutions to Remove Bad Odors from Water Tanks Permanently

By Albert G. Croley
3.5K views 1 min read

Have you noticed an unpleasant smell coming from your water tank? Whether it’s a musty odor or the notorious “rotten egg” smell, your water tank may be harboring bacteria, algae, or other contaminants that cause these unpleasant odors. 

However, don’t worry—there are several easy steps you can take to remove smell from water tank and keep your water clean and fresh. Read on to find out!

Common Causes of Water Tank Odor

Before we dive into the solutions, it’s important to understand why your water tank may be smelling bad in the first place. Several common issues can cause odors in your water tank:

Bacteria Growth

Bacteria thrive in stagnant water, especially when the tank isn’t cleaned regularly. If your water tank has been sitting without fresh water circulation or treatment, bacteria can build up and release foul odors. 

This is often the case in tanks that store untreated or well water.

Algae Growth

If your water tank is exposed to sunlight, algae may begin to grow inside, leading to a musty or earthy smell. 

Algae growth is particularly common in tanks that are not properly covered or maintained. The sunlight encourages algae to bloom, which can not only cause smells but also clog pipes and filters.

Contaminants

Sediment, rust, and other debris can accumulate at the bottom of the tank, creating the perfect breeding ground for bacteria and foul odors. 

Even if your tank is covered and protected, contaminants from the water source can settle in the tank over time and lead to bad smells.

Sulfur or Rotten Egg Smell

The infamous “rotten egg” smell is caused by hydrogen sulfide gas, which forms when sulfur bacteria break down organic matter in the water. 

This odor is particularly strong and unpleasant and is commonly found in well water tanks. The bacteria feed on sulfates in the water and release hydrogen sulfide gas as a byproduct.

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4 Essential Steps to Remove Smell from Water Tank

Now that we know what causes the odor, let’s explore the steps to clean and freshen your water tank. These methods will help you eliminate the smell and prevent it from coming back.

Step#1 Empty and Clean the Tank

The first step to removing odors from your water tank is a thorough cleaning. Follow these instructions to safely empty and clean your tank:

  • Turn off the water supply to the tank to prevent any new water from entering during cleaning.
  • Drain the tank by connecting a hose to the drain valve or outlet. Make sure the water is being emptied into an appropriate drainage area.
  • Scrub the interior: Once the tank is empty, use a long-handled brush to scrub the walls and floor of the tank. This will help remove any sediment, rust, or algae buildup.
  • Rinse the tank thoroughly with clean water after scrubbing to remove all debris.

Cleaning the tank regularly will prevent odors from recurring and improve the quality of the stored water.

Step#2 Disinfect the Tank with Chlorine

After cleaning, it’s important to disinfect the tank to kill any bacteria that may be causing the smell. One of the most effective methods for disinfecting a water tank is to use chlorine bleach.

Here’s how to disinfect your tank with chlorine:

  • Calculate the right amount of chlorine bleach: For every 1,000 liters (264 gallons) of water, use 50 milliliters (about 1.7 ounces) of chlorine bleach.
  • Add the bleach to the tank after it has been partially refilled with clean water. Mix it thoroughly by allowing the water to circulate.
  • Let the chlorine solution sit for 2-4 hours to ensure all bacteria are killed.
  • Drain and rinse the tank again to remove any chlorine residue before refilling it with clean water.

Chlorine is highly effective at killing bacteria and eliminating odors, but be sure to fully rinse the tank to avoid any leftover chlorine affecting your water quality.

Step#3 Use Vinegar as a Natural Cleaner

If you prefer a natural cleaning method, white vinegar is a great alternative to chlorine. Vinegar helps neutralize odors and kill bacteria without harsh chemicals. Here’s how to use it:

  • Mix a solution of one part white vinegar to three parts water.
  • Fill the tank with the vinegar solution, ensuring it covers all areas.
  • Let it sit for several hours to break down bacteria and remove any lingering odors.
  • Drain and rinse the tank thoroughly with clean water to remove the vinegar.

Vinegar is an eco-friendly way to clean your water tank and remove smells naturally. Make sure to rinse well after cleaning to prevent any residual vinegar taste in your water.

Step#4 Install a Water Filter or Softener

Installing a water filter or softener can help reduce the contaminants that contribute to odors. Here’s how they can help:

  • Water filters: These can remove sediment, rust, and other particles from the water before it enters the tank. By keeping contaminants out, you reduce the chances of bacteria growth and bad smells.
  • Water softeners: If you have hard water (high in minerals like calcium and magnesium), installing a softener can help prevent the buildup of minerals that cause smells, especially the sulfur smell associated with hydrogen sulfide.

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Preventive Measures to Keep Water Tanks Smell-Free

Now that your tank is clean, it’s important to take preventive steps to keep odors from returning. Here are a few ways to maintain a fresh-smelling water tank:

Regular Cleaning Schedule: Set up a regular cleaning schedule to prevent sediment, bacteria, and algae from building up in the tank. Clean and disinfect your tank at least once or twice a year, depending on the water source and usage.

Using Tank Covers: Cover your water tank to keep out debris, dirt, and sunlight. A covered tank helps prevent algae growth, which is often triggered by sunlight exposure. This simple step can dramatically reduce the chances of odors developing.

Proper Ventilation: Ensure your water tank has proper ventilation to avoid stagnant water conditions. Stagnant water encourages bacteria growth, so keeping the tank well-ventilated helps maintain good water quality.

Routine Water Testing: Regularly test the water in your tank for bacteria, algae, and contaminants. Water testing kits are widely available and will help you identify potential issues before they lead to foul odors.

Concluding Words

Removing smells from a water tank doesn’t have to be difficult. With a little elbow grease, some common household supplies like chlorine bleach or vinegar, and a regular cleaning routine, you can remove smell from water tank quite easily. 

However, if the smell persists or the tank shows signs of damage, make sure to get in touch with a professional for immediate help.

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