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You are here: Facts & Figures
1. Rainwater harvesting is the accumulation and storage of rainwater for reuse before it reaches the aquifer.
2. Rainwater may be utilized for both potable and non-potable requirements such as: drinking, cooking, bathing (potable quality); swimming pool replenishment; laundry (reduces detergent & bleach); livestock & animals etc.
3. Commonly rain water harvesting systems are constructed of three principal components; the catchment area, the collection device, and the conveyance system.
4. Rainwater may also be used for groundwater recharge, where the runoff on the ground is collected and allowed to be absorbed, adding to the groundwater.
5. Currently in China and Brazil, rooftop rainwater harvesting is being practiced for providing drinking water, domestic water, water for livestock, water for small irrigation and a way to replenish ground water levels.
6. In Tamil Nadu rainwater harvesting was made compulsory for every building to avoid ground water depletion.
7. In Rajasthan, India rainwater harvesting has traditionally been practiced by the people of the Thar Desert.
8. In the Irrawaddy Delta of Myanmar, the groundwater is saline and communities rely on mud-lined rainwater ponds to meet their drinking water needs throughout the dry season.
9. In Bermuda, the law requires all new construction to include rainwater harvesting adequate for the residents.
10. Disadvantages of rainwater harvesting technologies are mainly due to the limited supply and uncertainty of rainfall.
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