Hilltake uses 100% pure mirror finish stainless steel 304 Grade, which is internationally recognized food grade approved material. Stainless Steel is the perfect solution to store water, or for beverages and industrial applications. It is a much healthier alternative to plastic, concrete and other metal containers. Our Design solves all the common problems that has arised with water tanks, kills bacteria, does not algae growth, solves the need to clean the tank, and even tackles the issue of never letting your tank overflow. It doesn't end there, Hilltake Stainless Steel tanks are manufactured using the finest machines, making it strong, lasting, and most of all aesthetically pleasing. Treat yourself and your family better.