This is the first book of the "Eco-Technology" series, and as so, gives you the foundation of the therories presented by Vikto Schauberger, and amplified by Callum Coats. It DOES contain quite alot of previous information written in Living Energies (Coat's first Schauberger book), however, the discussion and the text is much more thoroughly covered. The substance of water, water supply, deep-sea water, the consequences of drinking purely mechanically treated water, notes on the secrets of water, high-frequency water, the pulsation and healing power of water, river regulation, groundwater tables, temperature and movement of water...notice my use of the word WATER. Yes, this book is about water, but, by reading it, just wait until you discover what you DID NOT know about "water". It is a very good start, and as I said, a foundation for understanding the theories of Viktor Schauberger.
This book has more details in it than Living Energies but by no means does it explain exactly how Viktor created his mystical healing water that cured many disorders. If anyone wants to be a great water researcher or just knowledgeable on water they should read and re-read this book 4-5 times and then read in-between the lines. A great book if you want to learn about water. No-ONE today even comes close to Viktor Schauberger, he was the Water King.