Water Tanks
Water Tanks by Waterplex

Waterplex sells one of the most extensive ranges of rainwater tanks in Australia so we are bound to have a solution that suits your requirements.

Water tanks are available in a large number of different materials and sizes and shapes. What is the best water tank and rainwater solution for you? The team at Waterplex can help you determine the best solution and provide professional advice on the installation of your water tank and the broader rain harvesting solution.

What are the different types of rainwater tanks?

Waterplex rainwater storage solutions include the following types of rainwater tanks:

  • above ground plastic water tanks
  • underground plastic water tanks
  • underground concrete tanks
  • plastic slimline water tanks
  • plastic round water tanks
  • steel slimline water tanks
  • steel round water tanks
  • flexible bladder water tanks
  • tank liners for existing tanks
  • tank liners for existing or new building structures or voids

We can even have one of our preferred installers come to you and give you free advice and a quote to supply and install a water tank solution for you.

Simply call the team at Waterplex on 1300 72 66 70.

Alternatively, work through the steps below to determine the right water tank for you.

Step 1: How much rainwater do I need?

The amount of rainwater you need is determined by what you want to use the rainwater for. If you only want to use the rainwater for your garden you can determine the amount you need by working out how long you want to water your garden for and how often.

A typical rainwater tank pump will use around 40 litres per minute if it is unrestricted (such as with a hose). This water usage will reduce if you are using drip irrigation or a similar water saving system.

If you water your garden for 30 minutes at a rate of 40 litres per minute, you will use 1200 litres. A drip irrigation or similar system will use less water.

If you water your garden at the above rate three times a week then you will use 3,600 litres of water.

You can use rainwater inside your home. The most common applications are for flushing toilets and in washing machines. If you want to use your rainwater inside the home then you can use the following rules of thumb on the amount of water you will use:

an average top loading washing machine uses approximately 100 litres per cycle

an average half flush toilet uses 3 litres per flush and a full flush uses approximately 6 litres

Step 2: How much rainwater can I catch?

The rule to work out how much rainwater you can catch from you roof is:

"One millimetre of rain on one square metre of roof = 1 litre of stored rainwater."
(1mm of rain on 1m² of roof = 1 litre)

Work out the number of downpipes you will be capturing and the amount of roof area that they harvest from. So if the answer is 100m² of roof area for the downpipes you are able to connect to a rainwater tank, you will be able to calculate the rainwater you can capture per rainfall and per annum.

For example, if there is a 30mm rainfall over a 100m² roof area then you will capture 3,000 litres. If you know your average annual rainfall, you can calculate the amount of rainwater you can capture in a year assuming there is sufficient use of the tank and enough space for more water when it rains.

So, for a city like Sydney where the average annual rainfall is 1200mm, the average annual amount of rainwater that could be captured and stored is 120,000 litres! To put that in perspective, a top loading washing machine uses approximately 100 litres per cycle, so that is 1200 washing machine cycles!

Step 3: What Capacity water tank should I buy?

Work out your average monthly rainfall by dividing the annual rainfall by 12. Obviously it does not rain consistently during the year but this is a broad calculation (you could find actual average monthly rainfall from the Bureau of Meteorology if you want to).

Calculate the amount of rain water you will capture per month. In our example the annual rainfall of 1200mm divided by 12 months give us 100mm per month. Rainfall of 100mm per month over a 100m² roof are will give a potential capture of 10,000 litres per month.

Step 4: Identify the best locations for a water tank

Do you want to put the water tank down the side of your home? Or maybe you would like a water tank under the deck? or at the back of your garden? Or is the most important thing to you that you do not see your water tank?

Identify the locations and then measure them so that you know what size tank you can fit in that area.

That includes hiding a tank such as an underground water tank (either a plastic tank or a concrete tank) or an under deck tank or water bladder tank.

Step 5: How will your water get to and from the Water Tank

The tank at the back of your property might seem like a good idea but how do you get the rainwater from your gutters and downpipes to it? The answer might be really easy because the stormwater runs past the water tank. Or you might be happy to have new pipes run to the water tank.

Alternatively you might then decide you prefer to have the water tank closer to the house to simplify getting the water to and from the tank.

But if you would like some help on how to choose the right size, shape and type of rainwater tank, just call the team at Waterplex on 1300 72 66 70.

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Why Waterplex

The Waterplex Group are specialists in producing innovative solutions for storing & harvesting water without taking up all of your valuable space around the home. Waterplex are a leading provider of water tanks in Australia and we have been part of the Australian water industry for over 10 years. We have built up a reliable national network of resellers and highly experienced installers that deliver a "supply and install" solution that is second to none.

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