This is what they say the mission is:
The mission of Computing for Clean Water is to provide deeper insight on the molecular scale into the origins of the efficient flow of water through a novel class of filter materials. This insight will in turn guide future development of low-cost and more efficient water filters.
I was reading about it on WCG.com, saw that part of the research is on carbon nanotubes which I thought was interesting.
The WUs so far are only taking about 2hrs to complete on my i7, so its a nice quick WU. Maybe someone can check their results and see if they have similar times so we can see if this is like the Rice project where all the WUs were 6hrs long no matter the CPU, or if this is dependent on CPU speed.