As a general point, I think there are a whole host of potentially high impact charities (such as those that are “other outstanding charities”) that have not received much attention in the EA community, and could be good targets for more research and highlighting in a similar way.
Yes potentially. I know that Evidence Action (the charity that runs Deworm the World) also has a water dispensing charity http://www.evidenceaction.org/dispensers/ .
GWWC has a good blog post from 2014 about them and the potential for research in this area. https://www.givingwhatwecan.org/blog/2014-01-28/dispensers-for-safe-water
As a general point, I think there are a whole host of potentially high impact charities (such as those that are “other outstanding charities”) that have not received much attention in the EA community, and could be good targets for more research and highlighting in a similar way.