Can you expand on this reasoning? Water use is a planet wide issue and is even more relevant for less developed areas. This seems like something that could have very high pay off.
I doubt kitchens and bathrooms play a big role in water shortages, plus assuming (as I did) that Silicon Valley only comes up with solutions that are profitable for themselves, their solutions are unlikely to be applicable to developing countries.
I think we need a discussion thread for the californian drought going on. I would like to compile information in the main post and would like help compiling it. If we really are proud to be effective altruists then this is an area we should really figure out.
Any one have any good ideas on how we can help?