Guide to Collecting and Using Rainwater

Whether you live somewhere rural, far from mains water supply, or simply wish to live as sustainable as possible then you might want to collect rainwater. Rainwater is excellent for watering your garden, washing clothes and flushing toilets. If properly treated, rainwater can also be used for drinking.

How to collect and use rainwater

Generally, the simplest way to collect rainwater is by collecting it from your roof. Connecting a small plastic tank to your gutter allows you to store the water that would otherwise go down the drain.

This system can actually get you quite far. A simple plastic barrel at the bottom of your drain is perfect for those looking to use rainwater on their garden. This use case is simple, cheap, and small. However if you plan to use rainwater for more than just your garden, you will soon find this solution to be less than ideal.

The average garden water tank is usually small, holding about 200L – 500L. If you plan on collecting rainwater for indoor supply a much larger tank is required. A 5000L plastic water tank in areas with year round rain, such as Auckland, is perfect. Dryer climates may need a tank larger than 10,000L.

Rainwater Tank Materials

You can buy tanks in all kinds of shapes, sizes and materials. We offer a selection of plastic tanks. However, you can also find concrete and steel tanks on the market. Each offers their own benefits. Such as concrete which is often used for in-ground tanks. Plastic retention tanks however are a common choice for their durability, light weight and low cost.

It is important to note that regardless of what tank you have it will need to be supported by some kind of foundation. 1L of water weighs 1Kg. So, even a 250L tank can become heavy enough to sink into the ground.

There are many different configurations, sizes and types of rainwater collect systems. It is best to consult with a professional before getting to work. However, if you are after some New Zealand designed and made plastic water storage tanks do not hesitate to give us a call on 0800 768 284.