Rain Water Essay

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3. INTRODUCTION
It is said that freshwater will be the first natural resource to be depleted due to its pollution that is growing increasingly, threatening the ecosystem health and may causing various problems of nutrition and health on a global scale, especially in semiarid regions,such as North Africa and the Middle East. The water scarcity can limit the social and economic development especially on the reagions mentioned above. Thinking about it, it is necessary to create new alternative methods for the sustainable water use as the recycling of rainwater.

4. WHAT IS RECYCLING RAINWATER
Recycling rainwater, also known as rainwater harvesting, collects the rain that fall onto roofs and then stores it in a tank until required for use. When required, the water is then pumped to the point of use or to a secondary tank which distributes the rainwater to the whole establishment, avoiding the demand for mains-water. In the process, a volume of water is kept out of the storm-water management system, to assistance the reducing of flooding risks.
Rainwater harvesting is not a new concept; but, over the last century its use has restricted, with the availability of a clean and inexpensive water source through the mains supply.
Recently, localized flooding started to become a problem once the water demand has begun to exceed supply. Industry experts are now identifying the important role that the harvesting of rainwater, also known as grey water recycling, have to practice in order to improve these two problems.
5. HOW DOES IT WORK? - RAINWATER HARVESTING SYSTEMS OVERVIEW
Rainwater is captured from the roof (s), and taken to a central point, through gutters and pipes standard displacement, to enter into a storage tank ...

... middle of paper ...

...groups in order to provide clean and good quality water. In Beijing, the main water distribution system is being complemented by the rainwater collected in houses. When it comes to Africa, some countries such as Guinea-Bissau and Senegal, houses have a rainwater collecting system made of local, organic materials. In Zimbabwe, where the populations mostly has access to water via contaminated open wells, the government is implementing a program to ensure safe drinking water to rural schools through the installation of rooftop rainwater harvesting system.
9. CONCLUSION

Analysing the research and studies for the construction of this report, it can be concluded that recycling rainwater is a sustainable way of water usage and its use have increasingly been assimilated by companies, buildings and people who are interested in smart ways to reuse, recycle and save water.

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