1.1 Importance of Water to Life and Our Environment

For every plant and animal in this world, living habitats are very important. Water holds the same level of importance for their survival. The existence of plants and animals is impossible without water. Water is essential for all living beings, whether unicellular, bi-cellular, or multi-cellular. It aids in digesting food and helps absorb various proteins and minerals from our food into the body. Humans use water daily for various purposes, such as:

  • Drinking and cooking 
  • Bathing and washing clothes      
  • Plantation in gardens      
  • Agricultural purposes
  • Cleaning buildings and streets
  • Controlling fire
  • Filling swimming pools
  • Running engines in industrial areas

Necessity of Water to Life

Humans and other living beings can survive longer without food than without water. If the water content in the human body decreases by 1%, the body feels thirsty. A 5% reduction causes muscle pain, a 10% reduction leads to unstable vision, and a 20% reduction can be fatal. The human body is composed of 50–60% water, which performs the following functions:

  • Supplies minerals and vitamins to cells
  • Keeps the air in the lungs moist
  • Supports body metabolism
  • Enhances mineral absorption by muscles
  • Keeps joints moist
  • Regulates body temperature
  • Transports nutrients throughout the body

Need for Frequent Water Intake

Drinking enough water is crucial for good health. Water supports metabolic activities, prevents dehydration, maintains body temperature, regulates nutrients, and provides moisture. Insufficient water intake can lead to diseases, including kidney damage. The World Health Organization recommends:

  • Adults: Minimum 2 liters per day
  • Children: 1 liter per day
  • Infants: 0.75 liters per day

The required amount varies based on age, sex, weight, activity level, and climate. Frequent water intake is necessary for:

  • a. Maintaining Hydration: Essential for body temperature regulation, nutrient transport, and waste removal.
  • b. Regulating Bodily Functions: Supports organs like kidneys, liver, and the digestive system.
  • c. Supporting Exercise Performance: Reduces fatigue and increases endurance.
  • d. Supporting Cognitive Function: Prevents impaired mental performance due to dehydration.
  • e. Preventing Health Problems: Reduces risks of kidney stones, constipation, and urinary tract infections.


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