When fresh water runs out

Droughts have been a huge issue already this year, and with climate change, it will probably become worse. But what do we do when freshwater runs out? We can desalinate water, and in case of an emergency we can do this: 

https://medium.com/@ErlijnG/2-methods-that-can-save-us-when-freshwater-runs-out-eb94c210262d

(credit: design36 on Shutterstock)