Before collecting water from rain, you'll need to invest heavily in rainwater tanks. Your domestic water supply needs can benefit more from large-sized water tanks. Selecting the right rainwater tank is crucial, whether you need water for agricultural or household use. Generally, your purchase decision will primarily depend on various fundamental factors. Please, keep reading to learn more about them below.
The Size of Your Rainwater Tank
Before purchasing the ideal rainwater tank, determine the quantity of water you need. Typically, water supply needs vary from one household to the next, including other application requirements. While circumstances might differ, invest in a tank that can store at least a few weeks' water supply. For example, if your household uses 20,000 litres of water per week, invest in a rainwater tank that can store up to 80,000 litres of water.
Additionally, you want to consider your roof's water harvesting capacity. Calculate how much roof space is needed to harvest a litre of water for every millimetre of rainfall received. Knowing the correct roof space available for collecting rainwater and your area's average rainfall quantity can help determine the tank size required.
A Single Large-Capacity Tank or Multiple Small-Capacity Tanks
Another critical factor to consider before investing in rainwater tanks is choosing between one large-capacity tank or several small-capacity tanks. This decision relies on various factors, including budgetary allocation, roof configuration and personal taste. Some roof configurations might not support single tank water harvesting, regardless of the gutter system efficiency. If this is the case with your roof, consider installing multiple rainwater tanks in well-calculated spots.
On the other hand, installing one large-capacity rainwater tank might be advantageous since it provides exceptional value for your money and efficient space usage. However, a damaged primary rainwater tank might risk your water supply goals. Thus, it's prudent to consult rainwater tank installation specialists for insights into systems that will make the most of your water harvesting options.
The Quality of Construction Material
The current market is full of diverse rainwater tanks designed from different materials, including stainless steel, concrete and plastic. Regardless of the tank's construction material, avoid skimping on quality. High-quality tanks have excellent resistance to harsh environmental conditions. This characteristic also gives water tanks longer service lives.
If you opt for concrete rainwater tanks, ensure that the manufacturer has adhered to the recommended aggregate ratio. As for plastic tanks, consider HDPE (High-Density Polyethylene) materials with an AS/NZS 4020 certification. On the other hand, opt for stainless-steel water tanks with a 316-grading due to their impressive chemical, heat and corrosion resistance attributes.