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Deciding on a Tank?

Deciding on the best tank for your business, farm or family is an important one. There are factors


Space you will have available for a water tank

The dimensions of a range of tanks from different suppliers accessible on our website and is in table format ensuring ease when comparing measurements from different suppliers. A summary of the tables is provided below.

  Size(L) Diameter(m) Width(m) Length(m) Height(m)
  min max min max min max min max min max
General Tanks – drinkable
Tankswest – Slimline 450 1200     0.70 1.35 1.35 1.78 0.76 0.92
TanksWest – Circular 650 60000 0.86 4.88         0.9 3.4
West Coast Poly – Circular 750 23000 0.80 3.55            
West Coast Poly – Slimline 1500 1500     0.8 0.8 1.40 1.40    
Eco Sac – Below ground 1700 8600+     1.10 2.1+ 3.00 8.00+ 0.7 0.7
Underground – GAAF 2700 13000+     1.57 4.38 2.08 2.39 2.01 2.71
 
Use in toilets and laundry
Aquasource – Modern 750 3000 0.76 0.76 0.81 3.24     1.83 1.83
Aquasource – Slimline – Water Tower 1000 3000 0.60 0.60 1.20 3.60     2.22 2.22
Aquasource – Oasis 1700 5100 0.78 0.78 1.60 4.88     2.1 2.1
Eco Sac – Below ground 1700 8600+     1.10 2.1+ 3.00 8.00+ 0.7 0.7
Underground – GAAF 2700 13000+     1.57 4.38 2.08 2.39 2.01 2.71
 
General Tank – non drinkable
Aquasource – Above Ground – garden & watering uses – Aqua Garden 1000 3000 0.60 0.6 1.18** xxx     2.18 2.18
Aquasource – Above Ground – garden & watering uses – Modern Garden 750 3000 0.76 0.76 0.81 3.24     1.92 1.92
Aquasource – Above Ground – garden & watering uses – Oasis 1700 5100+ 0.78 0.78 1.6 3.24     2.05 2.05
 
Water Garden – with sprinklers
Eco Sac – Below ground 1700 8600+     1.10 2.1+ 3.00 8.00+ 0.7 0.7
Underground – GAAF 2700 13000+     1.57 4.38 2.08 2.39 2.01 2.71

* for the Home & Garden package the set consists of two Carat S underground tanks

** width does not include plumbing or Frogmouth filter

The amount of space you have available on your property to install a water tank is a crucial factor when deciding on the type and size of the tank you can purchase. The size of water tank you will require is often dictated by the pattern of rainfall in your area and the size of your roof.


What size of water tank should I purchase?

The amount of water you can collect depends on the pattern of rainfall, the size of your roof and the size of your tank.

The pattern of rainfall in your area is an important consideration when deciding the size of your tank. If you are unsure of the amount of rainfall you receive where you live, you can head to the Australian government’s bureau of meteorology website to find out.

The size of your roof helps you calculate how much water you can collect. Water is harvested when rain falls on your roof and is collected in your tank via the downpipes. Each square meter (m2) of roof area collects 1L of water for every 1 millimetre (mm) of rainfall.
Please note, each tank collects water differently. Tanks under your home and underground tanks can be connected to all of your home’s downpipes, maximising the quantity of water you can harvest. Traditional above ground tanks are generally connected to one downpipe. Therefore if your roof is 200m2 and your tank is connected to one downpipe, that collects 50% of the rainfall, the size of roof that you collect from is only 100m2.

The amount of water you can harvest can be worked out by tanking the pattern of rainfall and the size of your roof into account.

 

rainfall x size of roof = water
(mm) (m2) (litres)

How much water can you get?

Your roof may have an area of 140m2. You have chosen an above ground water tank, connected to one of your downpipes.

50% of the rain that falls on the roof will be caught by this downpipe, which is 70m2.

You have a rainfall of 10mm.

rainfall x size of roof = water
(10mm) (70m2) (700 litres)

Keep in mind that the larger the tank you have, the less likely you are to run out of water.