Lotus water treatment system

I was searching for a distiller tonight and ran across this:


http://www.tersano.com/Products/lws.php


They are selling at Amazon and Sears. Does anyone know for sure what ozone will remove from the water. Would any impurities be left behind?

Couldn't you just do this yourself? Perhaps ozone your water with a Sota or Natureclean ozone machine, then run it through a Britta filter?