Concerns about water quality are increasing and at times are intensified by water shortages. Global changes in water management are complex. Canada is more fortunate than most countries in possessing an abundant supply of clean water. However, some Canadian water supplies have been damaged by discharges from industrial, municipal and agricultural sources. Considerable research has been carried out in Canada on various aspects of remediation and restoration of aquatic habitats. This book was conceived to share the state-of-the-art remediation-restoration technology being used in Canada to rehabilitate lakes, wetlands, beaches and sediments. Furthermore the book reviews the difficulties experienced so that the readers can avoid similar problems and facilitate future improvements. Since Canada is a very large country with diverse climate and topography, the techniques used in this book can be implemented throughout most of the world.