Clean water with solar energy

The Aquapak can heat water to temperatures beyond 65 degrees Celsius using only solar energy. This ends the existence of all water-borne nasties like bacteria, viruses and parasites.

4 to 5 litres of water can take as little as 2 hours to pasturise.  solar-water-purifierThere’s a reusable sealed glass tube indicator filled with colored wax that melts when heated to the required temperature to pasteurise the water.

According to this page it is designed to be mass-produced in developing countries for less than $2.00US.  Envirogadget has more information here.  I could get into this type of hot water …