Water can be said to be polluted when there is an introduction of harmful substances in such a way that its natural qualities are so altered as to impure its usefulness or render it offensive to the sense of taste, smell, or sight.

Water pollution has so many ways of definitions. However, the basic elements of most definitions are the concentration of a particular pollutant in water for a sufficient period of time to cause certain effects.

If it is related to health such as the ones caused by pathogenic bacteria intrusion, the term contamination is appropriate.  A basis for defining water pollution can be said to be the presence of impurities in clean water or pure water.

Table of Contents

Cover Page                                                     i

Title Page                                                       ii

Acknowledgment iii

Table of Contents                                            iv

Preface                                                           v

CHAPTER ONE

• Introduction              1

CHAPTER TWO

• History of Water Pollution              2

 CHAPTER THREE

• Pollution                            3
• Water Pollution 4
• Types of Water Pollution 5
• Sources of Water Pollution 6
• Effect of Water Pollution 7
• Causes of Water Pollution 7
• Control of Water Pollution 9

CHAPTER FOUR

• Conclusion                           10

References