While we can’t determine how much it will rain in a particular area of Australia, we can fortify the catchment area of our Aussie rainwater tanks to tap the most of it. This article aims to answer all commonly asked questions about catchment areas of rainwater tanks.
Why is it important of know the rainwater catchment area?
As the name implies, it is the area that will ‘catch’ rainwater falling on it and send it to tank to store for future use. Catchment area is important because knowing the average rainfall, it allows you to estimate approximately how much water you can collect. Subsequently, it also helps in calculating the size of required water tanks.
How is catchment area calculated?
It is the sum total of area of all surfaces that can channel the rainwater they receive to the tank’s inlet. It includes all flat roofs, eaves as well as slants. The catchment area of a small house in Australia is ideally between 100 and 150 sq. meters.
What should the catchment area be made of?
Any area with timbre, even if it is treated must not be used as the catchment area. It should be made of concrete. If there is any uncoated lead in the roof, it should be painted over to ensure that the lead does not contaminate the water.
How can the water collected by catchment area kept free of pollutants?
The biggest problem in keeping catchment areas pollutant free is to prevent flow of contaminated water from the above.
How can the efficiency of catchment area be maximized?
The trick is to eliminate any elements that hamper water from hitting the catchment area. Keep surrounding vegetation trimmed and remove any overhanging structures like external window sills that jut over the catchment area.
What about the material your water storage tank catching the rainwater?
Recently, there have been reports in Australia of consumers receiving lead poisoning from water in their tanks. No doubt, these people were reassured that the water from their tank would be perfectly drinkable. But we all know there are many dodgey people out there who will say anything to make a sale. Give yourself peace of mind by simply purchasing a non-metallic poly tank.