@askanything is an educational tool, which upvotes questions.https://steemit.com/question/@askanything/askanything-you-are-paid-to-ask-questions
Repartition of drinkable water is very heterogenous on earth.
The French company http://sunwaterlife.com has build an ultrafiltration apparatus powered by solar energy.
It is producing drinkable water at 15 cts of euro /Liter
Is it expensive ?