There are compelling reasons for shortage of fresh water. The main reason is the overpopulation in the metropolitan areas. The global phenomenon of urbanization has lead to the global surge in potable water requirement. Secondly, increased pollution of natural fresh water reserves due to urbanisation and industrialization has compounded this demand. In fact, since the beginning of industrialization, fresh water from rivers and lakes has been increasingly used for manufacturing processes such as chemical reactions, cleaning toxic equipments and so on. Furthermore, in modern times, the growing use of salt free water for activities like recreational swimming, have also catalysed the surge in global water demand. For instance, swimming pools at home, theme parks, and resorts use an avalanche of water. Therefore, water scarcity has risen and is now a global problem.
National authorities, on the other hand, can control this surge by implementing public education schemes regarding controlled water usage. Strict national legislations for preventing natural fresh water reserve pollution are also required. Moreover, government should also set up infrastructure for purification of seawater into saline free water, which will help in meeting the growing requirement of fresh water. A good example is UAE where desalination plants have been used since many years to provide fresh drinking water.
Similarly, public can also contribute towards this noble cause by conserving water and also by limiting their daily household water usage. They should refrain themselves from performing activities that will pollute natural fresh water reserves.
Thus even though, the scarcity of fresh water is a growing global problem, there are various means and methods available, by which both the government and individuals can prevent this from worsening. 
There are compelling reasons for shortage of  
fresh
  water
. The main reason is the overpopulation in the metropolitan areas. The  
global
 phenomenon of urbanization has lead to the  
global
 surge in potable  
water
 requirement.  
Secondly
, increased pollution of natural  
fresh
  water
 reserves due to  
urbanisation
 and industrialization has compounded this demand. In fact, since the beginning of industrialization,  
fresh
  water
 from rivers and lakes has been  
increasingly
  used
 for manufacturing processes such as chemical reactions, cleaning toxic equipments and  
so
 on.  
Furthermore
, in modern times, the growing  
use
 of salt free  
water
 for activities like recreational swimming, have  
also
  catalysed
 the surge in  
global
  water
 demand.  
For instance
, swimming pools at home, theme parks, and resorts  
use
 an avalanche of  
water
.  
Therefore
,  
water
 scarcity has risen and is  
now
 a  
global
 problem.
National authorities,  
on the other hand
, can control this surge by implementing public education schemes regarding controlled  
water
 usage. Strict national legislations for preventing natural  
fresh
  water
 reserve pollution are  
also
 required.  
Moreover
,  
government
 should  
also
 set up infrastructure for purification of seawater into saline free  
water
, which will  
help
 in meeting the growing requirement of  
fresh
  water
. A  
good
 example is UAE where desalination plants have been  
used
 since  
many
 years to provide  
fresh
 drinking water. 
Similarly
, public can  
also
 contribute towards this noble cause by conserving  
water
 and  
also
 by limiting their daily household  
water
 usage. They should refrain themselves from performing activities that will pollute natural  
fresh
  water
 reserves. 
Thus
  even though
, the scarcity of  
fresh
  water
 is a growing  
global
 problem, there are various means and methods available, by which both the  
government
 and individuals can  
prevent
 this from worsening.