Publisher's Synopsis
INTRODUCTION
1.1 GENERAL
The basic necessity for human life is food, dress, and shelter. Water
is one of the important parameters to live in this world. Also, it is an important
factor next to oxygen, the quality of water is the symbol of the standard of living.
Poor water quality affects health conditions. Without water, we cannot
imagine our life. So water is also added to the basic necessity of human life
list. Even though water occupies 2/3 of the earth, only three percent of water
is potable water and the remaining water is unpotable.
