Just before the onset of the rainy season, John's father had placed a big tank in the backyard, which can collect the rainwater from the terrace of their building. John’s father has asked him to fix a tap to this tank, so that the water collected can be used to water the plants. Where should John fix the tap on the tank? Why?
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Answer:
Rainwater harvesting (RWH) is the collection and storage of rain, rather than allowing it to run off. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit (well, shaft, or borehole), aquifer or a reservoir with percolation. Dew and fog can also be collected with nets or other tools. Rainwater harvesting differs from stormwater harvesting as the runoff is collected from roofs, rather than creeks, drains, roads or any other land surfaces.[1][2] Its uses include watering gardens, livestock,[3] irrigation, domestic use with proper treatment, and domestic heating. The harvested water can also be committed to longer-term storage or groundwater recharge.
Rainwater harvesting is one of the simplest and oldest methods of self-supply of water for households, and residential and household scale projects usually financed by the user.[4] However, larger systems for schools, hospitals and other facilities can run up costs only able to be financed by companies, organization and governmental units.
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