Description

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.