Practitioners of environmental health all over the world are often confronted with problems that need investigation and action so that the unprotected populace can be secured against ill health consequences. These environmental aspects can be categorized according to their connection with air, water or food contamination. However, these are also related to occupation, occupational health hazards also need to be considered as a part of the field of environmental health. This book consists of a comprehensive overview of recent methods and researches in this field. The authors featured in this book hail from various countries and represent the viewpoint of both developed and developing nations. This book will be beneficial for professionals in the field of environmental health.