Water tank installation can be easy if you have the right advice and knowledge. Or you can simply hire an expert to do water tank installations for you.

Poly and Concrete Rainwater tanks are a simple and effective way to reduce your footprint. Water tanks assist to preserve and maintain our scarce water reserves and saves you money on your water bills.

Below is a step by step guide on how to install a rainwater tank in your home. Learn the complete steps in water tank installation.

What can I use my harvested water for?

Harvested water from rainwater tanks is recommended for all uses such as:

  • Toilet flushing
  • Washing clothes
  • Car washing
  • Watering the garden and filling decorative ponds
  • Swimming pools and spas
  • Fire fighting

As a general guide:

  • For every 1mm of rain that falls on 1m2 of roof, 1 litre of water is collected. Therefore for a roof that is 100m2 (10m x 10m), each 1mm of rainfall will deliver 100 litres of water.
  • The average person consumes around 145 litres of water per day. Approximately 12L of this is for drinking and cooking, 28L is for flushing the toilet, 75L is for bath and shower, 15L dishwasher and washing machine, and 15L for other.

There are many things to consider before you install a rainwater tank. Pre-Planning can save you time and money.

1. How will you use your harvested water?

Think about the end uses of your harvested water. Knowing what the water will be used for will have a bearing on all the other decisions you need to make as part of the tank installation.

2. What size tank will you require?

The size of the tank depends on the following four factors: 1) How you use your harvested water 2) The size of your roof catchment 3) The annual rainfall 4) Your household water consumption. Once you have this information, you can work out how big your tank will need to be to match your requirements.

3. Where will you position your rainwater tank?

You know where you will use the water, now work out if there is a location nearby where the tank can be appropriately sited; Some things to consider:

  • Select a suitable shape and size water tank that fits your preferred location;
  • Is it near the existing down pipes?
  • If you want to install a pump, make sure it is located in a place that will have low noise for your family or neighbours;
  • Consider access to the tank and your home for maintenance purposes;
  • Building regulations may also limit where you can locate a rainwater tank on your property in relation to the front, side and rear boundaries;

4. Choosing what type of tank that best suits you and your property

There are different types of rainwater tanks on the market. Quality Tanks can advise on the advantages and disadvantages of different tank types before choosing one that’s right for you. Here is a simple guide to the different types that Quality Tanks and Allways Polytanks manufacture locally in Yatala.

Polyethylene – ‘Poly’ tanks are durable, UV resistant, light weight and easy to transport. They are available in many sizes and colours. They can be placed above ground.

Concrete tanks – can be installed above or below ground. They are precast and transported to site and are durable and long lasting. They’re good for preventing algae growth as light can’t penetrate the concrete and they keep water cool.

5. Do I require approval from Council?

It is important that you find out about Council requirements before you put in a tank. Refer to your local council for further information.

6. Water tank installation requirements

If you are using the harvested rainwater for internal uses, like toilets and washing machine, you must maintain a minimum water level in your tank to ensure maintenance of hygiene. A licensed plumber must connect a ‘top up’ system also known as a Rainbank or water switch – to main water supply including fitting a back flow prevention device. If the rainwater tank is connected to main supply then it must comply with the Plumbing Guidelines of your local authority. If your rainwater tank is not gravity fed then you must install a pump. (See blog: Water Tank Pumps) Before installing a water tank pump you may consider your neighbours and your family and ensure that the pump is either located away from the property boundary. Other items your plumber is required to install are – First flush devices and gutter guards are essential for reducing the amount of sediment and other materials entering tank. Screens and gutter guards offer further protection by stopping insects and debris entering and breeding in the tank.

If you need help with water tank installation, contact Quality Tanks now!