Safe Drinking Water

Preventable, water-borne diseases remain a major health problem worldwide. The World Health Organization estimates that collectively, these diseases kill 1.8 million children annually, mostly in the developing world. For the past four years, Damon Ogle, InStove's co-founder and head of engineering, has been working on a solution. Thanks to his dedication, InStove is proud to announce the creation of water pasteurizers that works with InStove's 60 Liter and 100 Liter stoves.

InStove's gravity-fed pasteurizer destroys microorganisms by heating water to the pasteurization temperature of 71ºC, and then releasing treated water through a heat sensitive valve that stops cooler, un-pasteurized water from exiting the system. The unit can be used on its own or in rotation with the pot for cooking meals.

Two prototype units were taken to Ndola, Zambia in October of 2013, where Ogle and Research and Development Engineer, Nick Moses, worked with partners at Seeds of Hope International Partnerships to gauge the pasteurizer’s real-world performance. Preliminary testing indicated a 99.9%+ percent elimination of pathogens including hepatitis A, E. coli, shigella, entamoeba, retroviruses, polioviruses, giardia, cryptosporidium and the bacteria that cause typhoid and cholera.

Positive feedback from Zambia has pushed the development of the pasteurizer further, more than doubling the performance and efficiency. A now complete third-generation prototype can produce 800 liters of safe water per hour (211 gallons per hour) while burning 5 grams of wood per liter – about the weight of a pencil (equivalent to 24 gallons per pound of wood).

It is our conviction that this world-changing technology should be available to the poorest of the poor, especially those displaced by man-made or natural disasters. We envision a future in which one 100 Liter Stove with an InStove pasteurizer will produce enough clean water for a village or displaced community at minimal cost to the inhabitants and the environment.


Click here to learn more about the technical details of the pasteurizer.



Damon Ogle and Dale Andreatta describe the system in this video