Yemen is one of the most water-stressed countries in the world. In fact, some experts warn that it could be the first country to run out of usable water and that this could occur within a decade, Cholera is already spread across many areas of the country due to a lack of clean freshwater.
A solar water well in Yemen will mean: Reliable access to safe, clean water means that can be used for drinking, cooking, washing, watering crops etc
The Prophet ﷺ said,"Whoever guides someone to goodness will have a reward equal to it." Source Sahih Muslim 1893