7 Proven Tips to Keep Your Water Storage Tank Pristine

April 4, 2024

Whether you live in an area where water scarcity is a common issue, or simply aim to reduce your environmental footprint, a water storage tank is a fantastic addition to your home. However, to reap the benefits of such a system, ensuring the water inside remains fresh and potable is crucial. Here are seven indispensable tips to help maintain the pristine quality of the water in your storage tank.


The importance of clean, fresh water cannot be overstated. Your body, much like the Earth, is made up mostly of water. It's essential to life and is also instrumental in various household activities. For those reasons, safeguarding the quality of water in your home's storage tank should be a priority. Neglecting this can lead to health hazards and a tank that's unusable. What you store is only as good as how you keep it.

Tip 1: Regular Cleaning

Your water storage tank can inevitably accumulate sediments and algae over time. Regular cleaning is vital to ensure these impurities don't affect the water quality. But how often should you clean your tank?

The answer varies depending on several factors, but in general, a good rule of thumb is to clean your tank at least once a year. Those in drier, dustier locations may need to clean more frequently – perhaps every six months. Always be vigilant for signs that cleaning is needed, such as funny tastes or odours.

How to Clean Your Tank

Start by emptying the tank and scrubbing its interior walls with a mixture of water and detergent, using a long-handled brush. Rinse the tank several times before refilling to ensure all cleaning agents are removed.

Tip 2: Proper Ventilation

Without proper ventilation, your water storage tank can become a haven for bacteria. Microbial growth thrives in stagnant water. Proper ventilation prevents this by keeping the water aerated, discouraging the growth of bacteria and other microorganisms.

Ensure that your tank's vents are not obstructed and keep an eye out for any potential ingress points for insects or rodents. A fine mesh screen can help keep unwanted visitors out while allowing air to circulate.

Tip 3: Sunlight Exposure

Sunlight is one of nature's best ways to combat bacterial growth in water. By allowing some sunlight to reach your tank, you can inhibit the proliferation of microorganisms. This tip is especially handy if your tank is translucent or located where it can receive sunlight.

Be mindful of this aspect when installing your tank – a shaded area might be preferable for aesthetic reasons, but direct or indirect sunlight will keep your water fresher for longer.

Tip 4: Filtering Systems

Installing a water filtration system is an excellent way to enhance the quality of the water stored. It's particularly essential if you're sourcing water from a well, lake, or other natural bodies as these can contain various contaminants that may affect taste and safety.

There are several types of filtration systems available, from simple mesh screens to complex reverse osmosis setups. Your choice will depend on the water sources, your budget, and the level of filtration required.

Tip 5: Using Food-Grade Materials

The materials used to store water are as important as the water itself. Always ensure that your tank is manufactured with food-grade materials like high-density polyethylene (HDPE) or FDA-approved plastics. These materials do not leach hazardous substances, which could otherwise contaminate the water.

When in doubt, check with the manufacturer or a water-quality specialist about the materials used in your water storage system.

Tip 6: Monitoring Water Levels

Regularly checking and maintaining the water levels in your storage tank serves two purposes. Firstly, it indicates if there's a leak or an issue with the tank. Secondly, a consistent water supply prevents standing water, reducing the chance of bacterial overgrowth.

Set a schedule for checking your tank's water levels, and be diligent in sticking to it. Most homeowners find that checking once a month is enough to catch any issues early.

Monitoring your water tank level is much easier today than in the past. Whether your tank is above ground or underground, smart technology means that you can not only understand how much water is in your tank but also get accurate data on your average water consumption and details of how long the water in your tank will last. Smart Water is one of the leading manufacturers of water tank level indicators, available worldwide.

Tip 7: Adding Chlorine or UV Treatment

To ensure the water in your tank remains potable, consider employing disinfection methods such as adding chlorine or using UV treatment. These methods can be especially beneficial for water storage tanks that are not cleaned regularly or those with a history of water quality issues.

When using chlorine, be careful not to add too much, as it can affect the taste and odour of your water. UV treatment systems require electricity but are highly effective in killing bacteria, viruses, and other pathogens.


Keeping the water in your storage tank fresh and clean is essential for health and well-being. By following these tips, you can ensure that the water you've diligently saved for a rainy day is always ready for use, whether in home irrigation or an emergency consumption scenario.

Remember, maintaining your water storage tank isn't a one-off task. It requires regular attention and a keen eye for any changes that might affect water quality. It's an investment in your health, the environment, and your pocket, given that contaminated water could lead to hefty medical bills or the need for an entirely new water system in the worst-case scenario.


How long can you store fresh water in a tank?

Stored water can generally retain its freshness for about six months to a year without special treatment, provided you have followed the advice listed above.

Does water in a storage tank need to be treated?

Yes, water in storage tanks needs to be treated to maintain freshness and potability, especially if stored for extended periods. Treatment is essential to remove or prevent the growth of harmful microorganisms and to filter out impurities.

How do you treat water for long-term storage?

There are several methods to treat water for long-term storage. You can add chlorine or bleach to the water, use ultraviolet (UV) light, or invest in water purification tablets, which are readily available for purchase. Each method has its advantages and recommended usage, so research and select the treatment that best suits your situation.

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