Question

Paragraph writing on water harvesting why and how

Answer 1

Answer:

Rain water harvesting is the accumulation, storage, preservation and filtration of rain water for future use of water as drinking water or for several other uses. The stored rain water has to be maintained regularly. The main purpose of rain water harvesting is to channel the rain water from the catchment surface such as roof top or other solid surface and then direct it through distribution system in to the storage tanks.

Benefits of Rain Water Harvesting

1. Mostly during water restrains rain water harvesting provides independent supply of water where the clean water is costly for people in rural areas, the harvested water will be a cheap source of potable water and can be stored for long term. This practice is common by people in independent residence and buildings.
2. In developed countries, harvested rain water is the source of supply and also reduces the cost of household water consumption. In fluctuating climates rain water harvesting systems are helpful in capturing the rain water when the rain falls. Most of the countries with unpredictable environment use rain water harvesting as it’s the economical and reliable source of clean water free of salinity and salts. It meets the water supply and prevents the wastage of water.
3. Rainwater is specially used for irrigation facility. Soil ridges are built to trap rain water and prevent it to run off the slopes, this captures enough water for crops to grow. Dams and ponds can be constructed to store large quantity of water for irrigation of crops in future.
4. Rain water harvesting lessens the impact of flooding. Due to rain water harvesting less water is directed towards sewer systems and it reduces the storm water to run off in fresh water bodies. This prevents the polluting of water bodies too.
5. The underground water sources are gradually being strained in many regions. Construction of deeper wells is expensive and can damage the natural environment. Thus, this source of rainwater is dependable and effective. Harvested rain water can be used when the ground water supplies have been drained.

Conclusion

There are various benefits and uses of rain water harvesting. However harvesting systems have to be designed functioned and maintained to ensure the quality of water. The water also needs to be purified and filtered for use.