Polarized radiation and epitaxy are presented here as key vectors for structuring water. Raman spectroscopy reveals that liquid water treated with 2.45 GHz polarized microwave and 13.56 MHz radiofrequency radiation undergoes dramatic structural changes, including striking reduction in the main O-H stretching modes which relax to normal on the order of several hours, while other structural changes persist for days or weeks. Water containing even very small amounts of NaCl in the presence of a polarized radiofrequency field, causes an unpredicted electrodeless dissociation of water, splitting the O-H bond to generate nascent hydrogen and oxygen, which can be burned, and/or which can spontaneously ignite. For epitaxial structuring, water properties, including surface tension and viscosity, have been altered using macroscopic, large, ultra-hard crystalline phases: corundum, diamond and quartz. This led to the development of a silica xerogel that is used in industrial applications and in the health industry.