Your water tank is one of the most important components in your house. Water is life – this might be a clichéd term, but it still stands true. Your water tank protects you from an unreliable primary water supply system, if your water supply system fails for any reason, you can still get by with the water stored in your tank. When purchasing your tank, you need to ensure that you get a tank that suits your needs. However, initial miscalculations or a significant increase in your water needs can put you in a situation where you need to increase your water storage capacity either by replacing your tank with a bigger one or adding another water tank.
The most obvious way to know that you might have underestimated your water tank usage is when your tank does not sufficiently meet your water consumption needs. If you run out of hot water before all members of your household have taken their morning shower, then your tank is evidently too small. The same applies for any other tanks that you may have, if your outdoor use water tank can’t hold sufficient water for you to wash your car and water your lawn, then it is too small.
In most cases, however, your tank can be considered to be too small due to a significant increase in the water needs in your household/property. If you had a guest house that you decided to rent to a family of four, then your current water needs may not have been factored in when you were purchasing your water tank initially. If you had an external water tank that could hold enough water to wash a single car, then if your household acquires two more cars, then your tank can be considered to be too small in the context of your increased water needs.
If your water supply reliability is significantly affected, then you might need to upgrade your water storage tank(s). When deciding on the size of your water tank, you have to factor in the amount of time that you might have to rely solely on your stored tank. When you consider two households with similar daily water consumption needs, the household that expects to have their supply interrupted for up to a week requires a much larger tank than a household that expects to have their water supply interrupted for a couple of days. If you find that your water supply can be interrupted for longer periods of time than you had anticipated, then your water tank is too small.
Some water tanks are not supplied from the local water supply network, for external use or farming needs, most tanks rely on rainfall for refilling. In such cases, every drop of precipitation is important and needs to be stored. If you find that your tank gets easily filled while there is still more rainfall that can be harnessed, then your tank is too small. You need to take advantage of favourable weather conditions so that you don’t have to resort to using your piped water for external needs. If your external water tank is too small to take advantage of the expected rainfall in your area, then it is too small.
Similarly, if you are using electricity to heat your water, and have an insulated hot water tank, then you can save your energy costs by heating all your water at a single go then shutting it off for the rest of the day. You need to estimate the hot water needs of your household so that your heater does not remain on the whole day. It is environmentally responsible to minimise your energy usage, especially if you are on the public electricity grid. If your insulated water tanks can’t hold your household’s daily hot water needs, then your tank is too small.