Theory:

Water Management
It is necessary to ensure that everyone gets access to an adequate amount of water. This is taken care of by the Civic authorities of that particular region.
The Civic authorities supply water by a well-planned pipe system. Sometimes not all the water that is supplied through the pipes reach the destination due to the leakage of water. Hence, it is also the responsibility of these authorities to prevent wastage of water and check if their supply system is adequate or not.
Wastage of water also occurs at the individual level as all of us knowingly or unknowingly wastewater while brushing the teeth, shaving, bathing, washing and so on. The leakage of taps is also
another source of water wastage.
Conservation of water
Rainwater harvesting:
  
Most of the water obtained by the rain generally flows away. This can be saved and used to replenish the groundwater levels of the Earth.
The process involved in preventing rainwater from flowing away and storing it for different purposes is known as water harvesting or rainwater harvesting.
Rainwater harvesting is performed by two techniques:
  1. Rooftop rainwater harvesting: In this technique, the rainwater is collected from rooftop to a storage tank via pipes. This water contains impurities like traces of soil and hence, need to be filtered before use. We can also let the pipes go directly into a pit in the ground instead of a tank. With this, the water can go into the soil and refill the groundwater.
  2. In the second technique, the water from the roadside drains that collect rainwater is sent into the ground directly.
Bawris:
 
The construction of Bawris for the storage of water and water recharge is an ancient practice.
With time the usage of Bawris was declined as it fell into disuse and garbage started piling in these reservoirs. Now due to the shortage of water in these areas, people are again using them to overcome the problem of water scarcity.

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Drip Irrigation:
 
It is a technique of watering the plants using narrow tubings that deliver the water directly to the base of the plant without any wastage. This technique minimizes the evaporation and save water.
 
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Important!
Hence, it was advised to the farmers so that they can use water economically.