We as humans need water to live, but when we say water, we mean pure water and we are very well aware that it is almost impossible to find pure water in today’s contaminated world. Although the mighty earth has water in abundance but very little amount of it is potable in its natural state that is where the demand for water treatment arises.

Water contains water molecules as well as a wide range of other compounds. One of water's qualities is that it dissolves other substances quickly. Water falling to land during rain showers dissolves chemicals, particles, and gases contained in the air, such as oxygen.Contaminants found in the air dissolve in rainwater as well. Surface water dissolves a variety of material, including sand particles, organic matter, bacteria, and minerals, as it flows across the land. As a result of contact with soils and rocks, water that settles into the ground and becomes groundwater which often contains considerable concentrations of dissolved minerals.

A variety of pollutants enter the water as a result of human activities such as agriculture, industrial waste, and sewer water discharge.Contaminants found in the air dissolve in rainwater as well. The health effects due to the contaminated water have created a sense of concern among the individuals. Various diseases have been found in direct link with the pollutants rendering in water and people fear the consequences.

Water treatment plants gather wastewater from industrial and municipal sources and purify it to the point where it may be used in agriculture, industry, and even as a source of potable water. Membrane technology advancements have been one of the most significant advancements in the water business in the last year.

Due to drinking water constraints and the expanding needs of the worldwide population, water treatment is becoming increasingly vital. Only 2.5 percent of the planet's total water reserves are freshwater, and only 0.4 percent of that is fit for human use.Water and wastewater treatment systems are more important than ever before, thanks to rising global demand for clean water, stricter regulatory challenges, and increased environmental concerns.

Rapid population growth and urbanisation, rising demand for new water resources, increased focus on water quality and public health, rising prevalence of water-borne diseases, increased industrial demand, and strict government regulations on wastewater treatment all contribute to the market's growth.Membrane technology is becoming more popular as a result of recent advancements that have made it more inexpensive, efficient, and effective. The water treatment sector is booming over the world as a result of all of these factors.Furthermore, the increased focus on sewage treatment in countries such as the United States, China, and India, as well as potable water for small settlements, present major market prospects.

Water treatment trends may change toward drinking water solutions like reverse osmosis filtration or other point-of-use water treatment systems that can efficiently remove those kinds of aesthetic water concerns in regions where municipal water is heavily treated with chemicals like chlorine. We can conclude the discussion by a simple statement that,

“In today’s world, water treatment plant is a necessity and not a luxury”.