Pastor Moses Kwanga is leading a project with other Ndolela villagers in Tanzania to sterilize their drinking water. The piped water supply is not always functioning and when it is not always drinkable. The solution is both simple and cost effective.
Forty houses in the village are now using solar water purification. The process is simple:
- Paint roof black
- Put water in clear plastic water bottles
- Put water bottles on the roof
- Wait eight hours
After eight hours the water is safe to drink. The heat and UV radiation are sufficient to kill bacteria in the water.
BBC News, "Using the sun to sterilise water." March 22, 2006.http://news.bbc.co.uk/2/hi/africa/4786216.stm (accessed November 9 ,2010).
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