What is rainwater harvesting?

Although close to three fourths of our planet is made of water, not all of it is suitable for use. The water in the oceans and seas cannot be used as drinking water and little of it can be utilized for other purposes. As a result, there is a constant shortage of water that is either good for drinking or home and industrial use.

The idea behind harvesting rain water is simple. Rainwater is collected when it falls on the earth, stored and utilized at a later point. It can be purified to make it into drinking water, used for daily applications and even utilized in large scale industries. In short, Rainwater harvesting is a process or technique of collecting, filtering, storing and using rainwater for irrigation and for various other purposes. The best thing about rainwater is that it is free from pollutants as well as salts, minerals, and other natural and man-made contaminants.

The simplest method for a rainwater harvesting system is storage tanks. In this, a catchment area for the water is directly linked to cisterns, tanks and reservoirs. Water can be stored here until needed or used on a daily basis. The roofs our homes are the best catchment areas, provided they are large enough to harvest daily water needs

 

Advantages of harvesting rain water:

  • Easy to Maintain:Utilizing the rainwater harvesting system provides certain advantages. First of all, harvesting rainwater allows us to better utilize an energy resource. It is important to do so since drinking water is not easily renewable and it helps in reducing wastage. Systems for the collection of rainwater are based on simple technology.
  • Reducing water bills: Water collected in a harvesting system can be put to use for several non-drinking functions as well.
  • Suitable for irrigation: The system can be connected to an existing irrigation system.
  • Can be used for several non-drinking purposes: Rainwater when collected can be used for several non-drinking functions including flushing toilets, washing clothes, watering the garden, washing cars etc.