Water and air are the basic fabric for the human life. Due to the human race of development the quality of water and air has been deteriorated. Water and Air Pollution are the key issues to address through the legal tools. The enforceability of the environmental legislation is the critical issue globally. There is an urgent need to change the paradigm of laws from command and control mechanism to the precautionary approach.This book is the guide to amend the existing environmental laws to enforce effectively. International environmental law principles are required to be incorporated in the national environmental jurisrudence for effective implementation by the developing nations. It is the need of an hour to achieve the sustainable development by amending the existing frame work of environmental laws.