Hi Mark

There are many reviews especially in boating magazines and there is also this link and video:
This is a 10 min video of the river water demo in KL and Penang, Malaysia of the Seagull IV water purifier from General Ecology USA.
http://naturepure.blogspot.com

Seagull 4 is a EPA certified micro-biological purifier, clinically proven to remove 99.99999% of viruses, bacteria, chemicals and heavy metals, up till the last drop.

Do not be confused by water filters or fancy so called high technology units that are not clinically proven.

Clinical tests done at the University of Arizona, USA and Institute Pasteur, France.

Also I had my water tested before and after the installation and the chemist couldn´t believe it was the same water!

It is easy to install no maintenance or electric, no waste water like reverse osmosis which actually wastes water and does not remove bacteria but removes the minerals from the water and destroys the goodness making it dead water!

Pip