Water or dihydrogen monoxide is a chemical compound that contains two hydrogen atoms and one oxygen atom. The three states of this compound are ice (solid), water (liquid) and steam (gas). The liquid state of hydrogen monoxide is transparent and nearly colorless. The chemical bonds in a water molecule are polar covalent bonds in nature. The high dielectric constant and polarity of water make it an excellent solvent. Polar and ionic materials such as acids, alcohols and many salts dissolve well in water. Water has an ability to act both as an acid and as a base and is therefore amphoteric in nature. The high surface tension of water is a result of hydrogen bonding between water molecules. Water also exhibits capillary action because of its potential to form adhesive and cohesive forces. This book is a vital tool for all researching or studying the chemistry of water as it gives incredible insights into emerging trends and concepts. It presents the complex subject of water chemistry in the most comprehensible and easy to understand language. Researchers and students in this field will be assisted by this book.