When you have decided to install a rainwater Water tank outside your home you may be confused over which size to choose as these water tanks come in many different sizes. As a general rule of thumb, you should put in the largest water tank you have room for and can afford. This will allow you to use the collected rainwater for as long as possible during periods of drought.

The water tank you buy should hold at least a four week supply of water. As an example, if you use 1,000 liters of tank water weekly in the yard, toilet and laundry combined, look for water tanks which can hold 4,000 liters of water. Other factors to consider when shopping for a water tank are the size of your roof, how much rain you get, how much space you have available and the number of people living with you.

A large water tank will be less likely to run out of water during droughts as opposed to a small tank. It is important to consider how much space you have and whether the tank will be installed above-ground or below. Try to find a local supplier that has many different sizes and types of Water tanks available so that you can visit the business to speak to the experts. You will be told what size water tank to consider buying based on the above mentioned factors as well as your budget.