You can find water tanks made of different materials like stainless steel, plastic, PVC, concrete, and more in the market. In fact for very long time, plastic and PVC were the first choice for water tanks. But plastic is a highly reactive material. It gets affected by environmental factors and is known for causing chemical leaching into the water. Health-conscious users have thus rejected plastic and PVC as a suitable option for water tanks. Nevertheless, stainless steel water tanks remain the choice of many.