Stainless steel is the choice of Australia’s world class food processing, catering and medical industries. It is an inert material and will not even under harsh temperatures taint the water with colour or taste and will not leach any contaminates. Most tanks on the market including polyethylene water tanks and Colourbond steel aquaplate tanks (plastic coated steel) pass the drinking water standard AS4020 but this standard still allows for a level of contamination. Many customers choose our tanks for complete peace of mind there will not be any contamination from the proven purity of stainless. Further reading refer Water tank comparisons for drinking water here .