Tips for buying and installing a rainwater tank?

Tips for buying and installing a rainwater tank?

The main role of water tanks is to handle the weather conditions, no matter how worse the condition might be. Especially rainwater tanks must store the rainwater runoff from the rooftops with the help of pipes. It has to collect and maintain the water with hygiene for future uses. An average 2.50cm of rain may allow you to collect more than 2,400 litres of rainwater to the rain barrel. So in order to store that in future, you have to choose the best rainwater tank. Here on this page, you may find a few tips to choose your rainwater tank and install it.

Your water usage and needs

You have to choose a rainwater tank based on your usage and need for water, and you must also consider your atmospheric ability to collect rainwater. If you live in an area where you can experience frequent rain, you can collect sufficient water. So in order to meet with frequent rain, you may opt for a large colorbond water tanks for water storage.

Tank material

You have preferred solid tank material which can handle the pressure of rain. It must be an opaque material like colorbond water tanks that restricts the sunlight. The UV rays may result in the formation of algae inside the tank. You can choose a slimline water tank, poly water tank or round water tank according to your space availability.


Rainwater tanks can collect rainwater in two different ways. Firstly from the rooftop with the help of a pipe. And it can also collect water from the surface from the placed location. To collect water from both ways, you have to locate the tank on the harvesting surface and include pipelines from the rooftop. For this purpose, you have to select your rainwater tank, which suits the available space of harvesting ground. It is best to select the place where there is minimal exposure to sunlight to prevent the coating of the rainwater tank.

Supply of pipes for harvesting

Before selecting your tank, plan for the pipelines to harvest from the rooftop because the rooftop is the source of more water than the surface. For surface, harvesting pipes ensure effective installation and protection against heavy hits. The roof harvesting pipe must have good support while harvesting. If there is a lack of proper support during rain, they will buckle and break in the middle.

Overflow pipe installation

If the overall pipe installation is proper, the rainwater tank will overflow two to three times a year. Make sure that the overflow pipeline is connected to a stormwater drain or soak pit. If the overflow pipeline is not proper, then it may lead to undermining of the tank foundation. Due to this, the structure of the rainwater tank will get damaged.

Pump location

You must consider installing a pump with a rainwater tank installation. Using gravity for water supply will not be effective as a pump. For example, if the tank is placed 2m above where the water is required and if the tank is filled with 1m of water, you can’t have good discharge water from the rainwater tank. In such a situation, there is a loss of pressure. For a smooth flow, you might need pressure from 250 KPa to 400KPa. Low pressure makes the draining process slow. Always refer to a pipe outlet rather than a tap outlet for fast discharge.

Bottom line:

Installing a rainwater tank with a proper harvesting pipe is the best way to save water. Research best support for tank and pipe installation and choose the best rainwater tank as per their suggestion.