Question

When is then water scarcity likely to occur?

Answer 1

●Water scarcity is the lack of sufficient available water resources to meet the demands of water usage within a region. It already affects every continent and around 2.8 billion people around the world at least one month out of every year. More than 1.2 billion people lack access to clean drinking water.

Answer 2

Water scarcity likely occurs where there are insufficient water resources to satisfy long-term average requirements.


I suppose

But still hope this helps