Water is essential for many people around the world and needs to be conserved. Recently water shortages are becoming severe and urgent issues to be addressed due to the global population growth coupled with rapid economic developments. Water is considered contaminated when the presence of elevated concentrations of substances in water exceeds the prescribed limits. More efficient water treatments need to be developed to address the worsening clean water shortage. Water treatment facilities made from plastic materials proven to offer more advantages compared to alternative materials. Their unique properties such as lightweight, strength, chemical and corrosion resistance, weather and fire resistance, easy and long-lasting installations contribute to the excellent applications of the water treatment system. Plastic provides many solutions for ensuring the sustainability of water. The choice of plastic types of materials depends on their specific applications. In this article, we introduce different types of plastic and its advantages. The plastic applications in water treatments were also discussed in different fields of human activities such as in water and sewage treatments, irrigation and agriculture, potable water production, aquaculture and ultra-pure water production.
