Traditional water treatment techniques have disadvantages such as high operational costs, low separation efficiency, large footprints, and possible secondary pollution. At the same time, solar energy has become an alternative source to fossil fuels and crude oil which address the sustainability and renewability issues. This chapter discusses the application of the use of 3D printed polysaccharide for water purification by using solar water evaporation and solar desalination. The chapter provide a brief overview of various technologies for the 3D printing including their scope and limitations focusing on common polysaccharides. The chapter discusses various types of polysaccharides including chitin, chitosan, cellulose, alginates, etc., for fabricating aerogels, hydrogels, and monoliths. The chapter discusses the fabrication methods, performance of each type of 3D printed material, and their limitation. The chapter shows the current advantages and future research direction in this field.