World War Water Review (UPDATE: 2021) - DOES IT WORK?

United States

We have control over drinking water and control over its production of the purest, freshest water for our health and well-being. This is achieved by distillation; the only procedure that will ensure that the water is clean and safe to drink. No other method of water purification is as efficient as distillation.

https://bigce.org/world-war-water-review/