“…However, only 0.4% of the freshwater sources are readily available in the forms of lakes, soil moisture, atmospheric water vapors, wetlands, rivers, and biota i.e., 67.4%, 12.2%, 9.5%, 8.5%, 1.6%, and 0.8%, respectively [6]. The limited freshwater resources put more than half of the global population (about 4 billion people) in peril of constant water shortage [7,8]. According to a United Nations report, 31 countries are at the physical water stress threshold value (i.e., 25 to 70%), and 22 countries are above the physical water stress threshold value (i.e., >70%) [9].…”