Water circulates through water cycle in all three states, solid, liquid and gas. Water cycle involves the process of evaporation of water in which water becomes water vapour (gas) and rises up to form clouds. This water comes back to the earth both in the form of rainwater (liquid) as well as snow (solid).

Groundwater depletion is the reduction in the groundwater level due to over consumption of groundwater. Groundwater gets naturally replenished by rainfall, but if the rate of replenishment of groundwater is less than the rate at which we consume it then the situation of groundwater depletion arises. Increase in population, industralization and agricultural activities put a significant amount of stress on the groundwater.

Bathing, washing of clothes and other day to day activities require water and are necessary for maintaining hygiene. But leaking taps in a house cause substantial wastage of water over a period of time and is commonly unnoticed. Hence, Anmol is wasting water among the three.

When we dig into the ground, we encounter the water table which marks the start of groundwater. As we dig deeper, the groundwater is stored between layers of hard rock below the water table. This deposit of water is called an aquifer. Groundwater can be extracted from aquifers using a water well.

The process of seeping of water into ground is known as infiltration.  Both asphalt road (paved road surface with asphalt) and cemented floor do not show any observable infiltration, but the soil in a flower pot shows sufficient infiltration as the water poured into it seeps through the soil.

Water scarcity is the situation in a particular region where there is not enough water available for the entire population of the region. Taps running dry, long queues for the collection of water and women carrying water over long distances are common observations which signify water scarcity in that region.

The regions which receive very less rainfall should involve in water harvesting because, during scarcity, people can use harvested water.