Water

Properties of water
As you well know, water is a transparent, tasteless, odorless, and colorless chemical substance. It can occur in three states: solid (ice), liquid, or gas (vapor) and covers 71% of the Earth's surface, mostly in seas and oceans.

Its chemical formula is H2O, meaning that each molecule contains one oxygen and two hydrogen atoms.

Water and Environemet 
What is the value of water? Invaluable. It is vital for all known forms of life. Water is a non-renewable source: in other words, today we quench our thirst with the same water with which our ancestors quenched their thirst; In fact, thanks to the steam cycle, it is re-circulated countless times.

It is therefore important to take care of your water system, and to constantly monitor the quality of the water.

For example, limescale tends to deposit and stick to the walls of the components of boilers, appliances, pipes, etc. After attacking the only way to remove it is by chemical process. Water hardness usually is measured or reported in grains per gallon, but some laboratories use milligrams per liter, or parts per million (ppm).

Another problem is hard water.  Water softeners reduce the total hardness of the water, and protect household appliances and water systems from limescale, prolonging their life.

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Mineral Water
Proper hydration is fundamental for all the functions of our body: it counteracts ailments such as arthritis, migraines, high cholesterol, hypertension. Good hydration also helps keep the brain shiny, the blood flowing and the body active. It is important for a healthy drinking good water. But is the water you're drinking safe? Often the quality of the mineral water that arrives at our table is strongly degraded due to the method of transport and storage.

Water is the healthiest drink
The human body is made up of 75% water. So, it is really important to drink lots of water. Drinking water helps maintain the balance of body fluids.The functions of these bodily fluids include digestion, transportation of nutrients,  circulation and maintenance of body temperature etc.
Dieticians, nephrologists, cardiologists, sports doctors agree that, for proper hydration, everyone should drink 3% of their water weight every day.

Water pollution
Water pollution is usually the result of human activities.
Water pollution happens when toxic substances enter water bodies such as lakes, rivers, oceans and so on, getting dissolved in them, lying suspended in the water or depositing on the bed.
One of the causes of water pollution is the inadequate sewage collection and treatment.