Circa 2017 A magnonic holographic matrix could be used to essentially treat the water in a solid-state way.
Researchers at the University of Sydney have applied quantum techniques to understanding the electrolysis of water, which is the application of an electric current to H2O to produce the constituent elements hydrogen and oxygen.
They found that electrons can ‘tunnel’ through barriers in aqueous solutions away from the electrodes, neutralising ions of impurities in that water. This can be detected in changes in current, which has applications for biosensing, the detection of biological elements in solution.
This neutralisation of ions in solution is a different idea to that currently believed, where the neutralisation only happens at the electrode surface.