by Heather Price, reposted from: http://sti-cs.org/2015/07/16/fancy-a-swig-water-quality-in-shallow-wells-in-kisumu-western-kenya/
We all know that access to sufficient clean water is vital for sustaining life. For us humans, the ideal scenario is that everyone can go to a tap in their house, turn it on, and an endless supply of clean water pours out. But currently more than 700 million people worldwide do not have ready access to an improved water source, and instead rely on other water sources including lakes, streams, and unprotected hand dug wells. While access to piped water is on the highest rung of the “water ladder”, these other sources are of more variable quality. I’ve recently been working on a project which looks at the role that shallow hand dug wells play in water supply in urban settlements in western Kenya.