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Sizing Your Water Storage Tank - Go To Tanks

There are over 5,000 water storage tanks sizes available for purchase today. That many options can provide quite a few opportunities to find the perfect fit for your water storage needs at home and in your business. However, it also offers just as many possibilities for you to find yourself mismatched with a water storage tank that does not adequately meet your needs. In worst-case scenarios, they may hinder you from living and working successfully. How can you work your way through the vast amount of options and find the water storage tanks sizes that are just right for you?

3 Questions to Ask When Searching for the Right Size Water Tank

Is water transportation crucial for you?

If your answer is yes…

There are many uses for transporting water from one place to another. One of the newer methods of saving up emergency drinking water is through small “blocks” of water that are not much bigger than milk jugs, but their plastic does not leak toxins into the water, and they are stackable. This is an inexpensive method of storing drinking water, and you can take the blocks out one at a time and use the water as needed. Another need for transporting water is to provide outdoor workers with water on a job site. Buying bottled water can become expensive compared to a large mobile tank. Many of these tanks can even be installed on trucks, making them easier to take from one job site to another. These larger portable water storage tanks sizes are also an excellent investment for those who own RVs because it allows them access to water when they are on the road and in between utility hookups.

Additionally, portable water storage tanks are helpful for professionals who use water in their jobs. Pressure washers and other exterior cleaners, farmers, and others may need quick access to large amounts of water. Vehicle-based storage tanks are an essential asset to the workers in those fields and industries.

If your answer is no…

 Most customers looking for water storage tanks prefer something that will be more or less permanent once it is installed. The limit to how big permanent water storage tanks sizes can be is based on your available space more than manufacturer ability. One of the most common types of the permanent water tanks is underground tanks. These are often used for septic removal but can also be used to store extra water. Some of the largest of these tanks hold 40,000 gallons of water when filled. Yet they can also be made small enough to fit behind a door in a bathroom.

If you are seeking a permanent water storage tank, it is essential to know the primary purpose it will serve. How often will you need to access this water? When you do access the water, how much will you be taking out each time? In general, the more often you need to obtain water, and the more water you take from it, the bigger it will need to be. Emergency drinking water storage tanks are usually much smaller than water storage tanks used to provide water for cleaning, or water for septic uses… things which are used on a daily basis. Determine how much water you need to use from your water storage tank and then at least double that amount, so you do not run out of the water by having guests over to your home or business. That will give you a good starting place for selecting water storage tanks sizes.

Are you planning to grow?

If your answer is yes…

Plan accordingly. If you are starting with small, portable water tanks, it is easy to add more as the need arises. However, if you install a permanent water storage tank and find that you need to double the amount of water stored by the end of the year, you may have wasted a lot of money installing a model too small for your needs. This can be detrimental to a business, because in most cases if a business does not plan to grow, it will not grow. In fact, if a company does not plan to grow, it usually dies. Plan ahead and plan accordingly. Set your goals for the next year and the next five years and make sure you purchase water storage tanks sizes that will help you achieve those goals, not hold you back from them.

This growth plan does not only apply to businesses. Young families starting out will only need enough water for two or perhaps three people. If they grow and begin to raise multiple children though, the water needs can quickly double in just a few years. If you know the water need will be growing, be sure to look into water storage tanks sizes that will fit your need for that near future.

If your answer is no…

The same concept applies. Determine how much water you will need on a daily basis and double that amount to a minimum size. On average, a person uses a gallon of water every day for drinking as well as hygienic purposes. If you take longer showers than you need to factor that in as well. It is better to be overprepared than to run out of water when you need it the most.

What are your long-term goals?

Save money.

If your goal in purchasing a water tank is to save money, you need to weigh out the cost-benefit ratio of installing and maintaining a larger tank versus a smaller tank that will save you less. There may be costs attached to filling these tanks as well, whether you are transporting water in or setting up a system to gather rainwater. Generally, the upfront cost is higher but the larger the tank, the more you save over time, so if you have the money to invest in it, a larger option will pay itself off in savings faster than a smaller tank.


If your goal is self-sufficiency, you will need to take all of your home needs and how you will use the water. It is important to store drinking water separate from cleaning water. Drinking water needs to be purified and treated while cleaning water does not require that additional work and expense. Purifying all your water will not do you any harm, but it will be a waste of money. If your goal is self-sufficiency, you will probably need to look at getting at least two separate tanks.

Again, the water storage tanks sizes should be determined by the frequency of access you will need and the amount of water you will be taking each time. Drinking water usually goes slower than cleaning water, but that could vary from household to household. Determine your needs, double that, and choose a size that allows for future growth and fits your budget.

Agriculture/Gardening for Hobby and for Profit

One of the largest groups of people that use water storage tanks on a regular basis is those in the agricultural industry. Today, we have megafarms that span across the Midwest and in the south near the coasts. These farms cannot always rely on rain to water their fields, so they store up vast amounts of water in both portable and underground water tanks. If you have a megafarm, you probably already have many water storage tanks sizes, and you probably use them all, all the time.

There are a growing number of gardening hobbyists though, especially those in more urban areas that are doing indoor gardening. These gardeners also need water storage tanks, but they typically get smaller sizes that can fit inside the homes. Most outdoor gardeners who are only hobbyists will not use large water storage tanks sizes unless they live in an area with very little rainfall and need it for irrigation. Usually, that is more expensive than a gardening hobbyist is willing to pay.

The benefit of using water storage tanks in all of these agricultural situations, both for-profit and as a hobby, is that the tanks allow you to add extra nutrients into the water. This means the water the plants receive from the tanks can actually be healthier for them than rainwater. If you are interested in growing plants and enjoying their fruits, vegetables, and flowers, you should look into water storage tanks sizes that will allow you to water enough of your plants without needing to be refilled but is small enough to fit in your home or on your property outdoors.

The options are endless. It is easy to get lost as you dream about the possibilities of saving money, conserving resources, or perhaps having water set aside for your professional or personal hobby needs. Be sure to decide what your intentions are with water storage before you set about to make a purchase. Determining if you need to transport water, whether your need will grow, and what the goals of that water are will help you make a wise investment in the size of your water storage tank.

Sizing Your Water Storage Tank - Infographic

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