Why build reservoirs when you can use nature's own?
By Rachel Nowak in Melbourne SOME of the bacteria that live in aquifers may destroy dangerous viruses. If they do, this could allow these natural reservoirs to be used to store sewage or even to help convert it into drinking water. Worldwide, aquifers hold immense quantities of water. For example, the Ogallala aquifer that lies beneath parts of Texas, Kansas, Nebraska and South Dakota contains as much as 4 trillion tonnes of water. Hydrologists believe they could use such natural formations as a cheap way to store sewage,