you need to make sure that you invest in a water storage tank that is eco-friendly in nature. Well, in such a case a stainless steel water tank is the right choice. Firstly, stainless steel is the most hygienic material available in the market which helps in keeping the water hygienic as well. Secondly, stainless steel is 100% recyclable which helps in protecting the environment and hence, is regarded as an eco-friendly material.