Water is life. Its importance in the socio-economic development of any nation could not be overemphasized. The small proportion of water available inform of fresh water has been constantly polluted due to various activities of man thereby, leading to serious water related problems. The study therefore, examines the importance and uses of water, sources of water contamination, water-related diseases, water pollution and causes of water pollution and effects, water treatment and means of preventing and control of water pollution. Data for the study were collected from both primary and secondary sources and recommendations were made so as to have free and safe water for all. The paper will be of benefit to environmentalist, researchers and policy makers.