large green water tank

With a reduction in rainfall all over the world, environmentalists are encouraging more and more people to adopt effective means of water conservation and seek alternative water sources. The use of large rainwater tanks has been recommended as one top strategy to harvest enough rainwater that can be used for both domestic and commercial purposes. Modern rainwater tanks are designed to store enough water for longer periods until ready for use.

Large rainwater tanks do not only provide enough water for domestic and commercial uses but also help reduce water bills. You can also use the harvested water to irrigate your garden, fill your swimming pool, wash cars, and clean your home, among other basic water uses. Despite these uses, however, there are some things to consider before you get a large rainwater tank to suit your water needs. Below are some things to remember to help you choose the ideal rainwater tank for maximum collection and storage of rainwater.


You will need a large rainwater tank to save you on repair and maintenance costs. Most plastic water tanks tend to burst at times when subjected to extreme heat. Therefore, if you are looking for a durable water tank that can store large volumes of water, then you should consider concrete or steel tanks.

Bisphenol A (BPA)

BPA is an industrial chemical that can be highly harmful to the human body. Several risks have been noted by recent studies, which include damage to internal organs, raises the risk of cancer, and affects fertility and fetal development, among other effects. Most plastic tanks contain this compound, and it could seep into the collected water, resulting in health complications. If you are considering getting a plastic rainwater tank, make sure this is made from food-grade plastic.


Harsh weather conditions including ultraviolet rays may easily affect your water tank, and therefore it is advisable to always consider coating your water tank. You also need to ensure that the coating material used is suitable to avoid contaminants in the collected water.


Go for a water tank with modern features such as inlets, outlets, water level indicators, discharge nozzles, and roof-access manways, among other features, to easily check on the harvested rainwater.


As your need for rainwater increases and as your dependence on municipal water decreases, you may need to expand your water tank to collect and store more water. Look for rainwater tanks with modular features so you have the flexibility and the ability to upgrade your tank in the future. Bolted water tanks are the best option if you need to upgrade to a larger rainwater tank in the future to increase your catching capacity. However, avoid concrete tanks as increasing their capacity may mean more costs on your end.

Overall tank capacity

The number of people in your household plays a great role in determining the average water usage and hence the exact dimensions of the water tank that you may need. Get a large rainwater tank-like steel rainwater tanks to suit your domestic water needs if daily average water usage is high. For more compact options, some slimline rainwater tanks hold up to 5,000 litres of water on a good day.

Large rainwater tanks are an ideal solution to harvest enough rainwater for both domestic and commercial use. Consider the tips highlighted in this post to help you invest in the right water tank to store enough water for your needs.