Undoubtedly, the importance of water cannot be denied. It is the top natural resource needed by all living on this planet, whether human beings, animals, plants, etc. Since childhood, we have been taught to save and conserve water. We are made aware of various technologies of the water system that can help us protect the water. One of those technologies of water systems is Rainwater harvesting.
Rainwater harvesting is the traditional, cheapest, and best water supply system to preserve water. To use this technology, we need to install a rainwater harvesting system. Often, water is considered to be granted. Groundwater is depleting daily, and hence it becomes necessary to restore it, for which rainwater harvesting is the best technique to restore. Many think that water is free and therefore we can use it as much as we can.
But this is a misconception. Everything in this universe comes with a cost and hence the water as well. But have you ever thought to conserve rain that flows from the sky? The answer to this is yes, and Rainwater harvesting is the best technique to preserve the rainwater. So, what exactly is Rainwater harvesting? Let’s understand.
What is Rainwater Harvesting?
Rainwater Harvesting is the process by which the rainwater is collected from the surfaces on which rain falls, and the water collected is stored for multiple purposes. This process keeps the supply of the water system back to normal levels. In simple words, it is the collection and storage of water from surfaces on which rain has fallen.
It is considered one of the most innovative techniques to utilize water harvested at the roofs or surfaces above the house for future purposes. The harvested rainwater can be used for gardening, crop irrigation, watering livestock, laundry, and flushing toilets. However, the rainwater cannot be used for showering, kitchen, or bathroom sinks because it is not suitable for consumption.
So, we got to know about rainwater harvesting. Now, let us understand how this rainwater harvesting works.
How does Rainwater Harvesting work?
Under a typical scenario, the water is collected on the roof of buildings and stored inside a special tank. After the collection of water, it is redirected into a tank, cistern, bottomless pit, or aquifer where the water is seeped down, and it helps in the restoration of groundwater.
The rainwater harvesting systems are designed after considering various things, such as rainfall pattern, incident rainfall, subsurface strata, and their storage characteristics. The harvested rainwater can be used both in the running city water and in rural areas where the constant water supply may be unavailable.
It is one of the most economical, cheapest techniques available to conserve water. If your roof is dirty and you are worried about collecting water from contaminated surfaces, don’t worry. It does have a solution. There are various tools available to clean the roof quickly. Apart from this, you can also hire a roofer to clean your roofs. It won’t cost you much.
What are the latest technologies available for Rainwater Harvesting in India?
In India, there are mainly two technologies applied for rainwater harvesting. These are explained briefly as follows:
1.Surface Runoff Harvesting: In this method, the rainwater flows off through the surface, and after that, it is saved or collected in an underground tank. It serves the purpose of recharging the groundwater naturally.
2.Rooftop rainwater harvesting: In this method, the rainwater flows off from the surface, and after that, it is stored in the tank to consume it directly rather than recharging the groundwater. This water can be used for irrigation, washing utensils, etc. after adequately treating it.
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