Water Calculator

What do the calculators do?

The water calculator has been designed to be easy to use and take a couple of minutes of your time. It will provide an approximate answer as water consumption on an individual basis can vary.

See how much water you could harvest by answering the following 7 questions.

How many people [including children] in the houshold?
			Litres Per Day	Litres Per Year
What do you want to use the catchment water for?
Garden	Minutes per day usage
Washing machine	Loads per day
Washing vehicles/boates etc
Drinking water
Toilet flushing
Total litres required
How much water can you harvest?
Click here for a map to give a guide to your average annual rainfall or enter your own value	Average annual rainfall	mm
What is the area of your roof that will be connected to the tank?	Square metres eg Small 80m2, Medium 150m2, Large 200m2	m2
Total litres able to be captured
Tank and installation requirements
Gravity feed or Pump required?			[Please select] Gravity feed Pump required Unsure
Would tank need to be installed in a confined area?			[Please select] Confined space Unsure Ample space
What is approximate gutter height so rain will run off roof into tank? [average is 2500mm]
Do you have any access constraints that may affect transportation of a tank to your site?			[Please select] Easy access Unsure Difficult access

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