I found a short article by Timothy Schmidt, Professor of Chemistry at UNSW, Australia, titled Don’t fall for the snake oil claims of ‘structured water’. A chemist explains why it’s nonsense. Below is the conclusion of that article:
So what does it all add up to? Put simply, it is not possible to buy any other type of water than regular water. You can change the pH, you can change the dissolved ions and gases, but not the water itself.
The snake-oil merchants selling structured water products use scientific-sounding words that are generally meaningless and are at best based on misinterpretations and abuses of Pollack’s experiments.
Pollack distances himself from most companies selling structured water products. He has his own structured water company, which among other products sells a “filterless water filter”.