This document discusses water resources on Earth and water pollution. It notes that water is essential for life but only a small fraction is available for human use. Water pollution occurs when the quality of water is impaired by natural or human activities. The key causes and types of water pollution are described. Interventions for combating water pollution include primary preventive measures and secondary punitive actions. The major laws governing water pollution in India are outlined, including the Water Act of 1974 and Environment Protection Act of 1986. Violations can result in imprisonment or fines. Individual actions for water conservation are recommended to help address the problem.