Why Recycle Rain Water
With global warming and the recent change in global weather patterns it is likely that rainfall patterns will continue to change bringing shorter but heavier bursts of rain causing flash flood and soil erosion. We have witnessed this as rainfall recorded in some parts of Malaysia has shown a marked increase in the last 5 years.
Household water consumption has been increasing for the last century, and as the climate warms other usage will increase, so new ways will have to be found to reduce, reuse and retain water. We can no longer assume that there is an endless supply of water even in a country with high average rainfall per year like Malaysia. This is already evident from the occasional water rationing as well as considerable price increase of municipal water supply.
This is where rainwater harvesting and recycling comes into the picture. With water charges at the present level, the payback time on such a system is typically 10-20years. If you consider commercial properties with large roof areas and high consumption of non-potable water, the payback time can be much shorter. However the benefits are much greater than just financial, the environmental aspects of rain water recycling are also very great.
Collected and filtered rain water can be safely used to flush toilets, water the garden, wash clothes and hair, wash car and general cleaning. Being soft water and chlorine free it is kind to washing machine, cleaning surface, plants, skin and does not leave behind unsightly scales and stains.
*Kuala Lumpur Average Annual Rain fall- 2,633mm/Year
(Jabatan Meteorologi Malaysia)