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, storm water
run-off and other types of contaminated water that can have a devastating impact
if they…
