Many households in Australia have embraced the use of rainwater tanks as alternative sources of water. The increasing popularity of rainwater tanks is one of the reasons they're readily available and affordable. However, before you rush to any tank dealer, there are some considerations you need to make to ensure you get the right tank for your specific needs.
Tank Material
The material you choose will depend on the purpose of the tank. The most common materials are steel, fibreglass, concrete, and polyethylene. Steel tanks have corrosive resistant coatings. Ensure your steel tank has no point of contact with brass, bronze, or copper fittings because these materials can cause corrosion.
Fibreglass tanks are also resistant to corrosion. However, fibreglass tanks are expensive and may expose water to sunlight. When stagnant water is exposed to sunlight, it allows algae to thrive. Some forms of algae are harmful to humans and pets. It would be best if you choose a tank with enough pigment to prevent light from penetrating through the tank.
Concrete tanks are bulky and strong, which means they're suited for underground locations. Be careful with new concrete tanks because they may contain lime, which increases the pH of water. Clean these tanks before using them. Polyethylene is non-corrosive. They're the cheapest options and are favoured for their lightweight and easy transportation.
Local Regulations
There are certain government restrictions concerning rainwater tank installations. These restrictions are meant to address issues like boundaries and overshadowing. You may also need planning permission depending on the size of your tank. Make sure you check the local government regulations on rainwater tanks.
Generally, there are minimum capacity standards for tank installations. For a detached house, your tank must have at least a capacity of 5,000 litres. For a non-detached home, the tank must have at least a capacity of 3,000 litres.
Size and Location of the Tank
When choosing a tank, apart from ensuring you get the right material and follow government guidelines, you must think about the size and where you're going to place the tank. The size of the tank will depend on the intended purpose of the tank. For example, if you want a rainwater tank for a long-term irrigation project, you should choose a sizable tank.
It's also essential to choose a suitable location for your tank. Check the amount of space you have around your home. Choose a spot with a sturdy support and a firm and level surface, preferably made of concrete for better safety.