Every year, thousands of people are forced to leave their homes due to climate-related constraints on drinking water and food production. As 25percent of the planet is expected to experience serious drought and desertification in less than 30 years, water shortages will play a key role in human migration. Maxim Pasik suggests in this article by the WEF Global Agenda on Water and Migration that trail-blazing technologies can create a source of fresh, clean drinking water for vulnerable citizens. Cost-effective wastewater treatment solutions can help, and new air conditioning and dehumidifier technology can draw pure drinking water from the atmosphere. 
https://www.weforum.org/agenda/2019/06/water-scarcity-refugee-crisis-tech-solve-it/

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