Rain water harvesting can lead to 1 Dilution of contaminants like fluorides and nitrates in groundwa...........

Geography Water - Issues, Challenges and Solutions

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Rain-water harvesting can lead to:

1. Dilution of contaminants like fluorides and nitrates in groundwater

2. Prevention of soil erosion

3. Reduction in the saltwater intrusion in coastal areas

Select the correct answer using the code given below.

1 and 2 only

2 and 3 only

1 and 3 only

1, 2 and 3

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Explanation:

Rainwater harvesting is a method to capture and store rainwater for various uses. It is also used to recharge groundwater aquifers. It is a low cost and eco-friendly technique for preserving every drop of water by guiding the rainwater to bore well, pits and wells.
Rainwater harvesting has several benefits like:

Increases water availability,
Checks the declining groundwater table,
Improves the quality of groundwater through dilution of contaminants like fluoride and nitrates,
Prevents soil erosion and flooding and
Arrests saltwater intrusion in coastal areas if used to recharge aquifers.

Rainwater harvesting has been practiced through various methods by different communities in the country for a long time. There is a wide scope to use rainwater harvesting technique to conserve precious water resource. It can be done by harvesting rainwater on rooftops and open spaces.