The book covers variety of topics viz., Water pollution : sources effects and control; Adverse performance of hydropower projects due to chemical nature of water; Ecological stress on the diversity of aquatic flora and fauna; Toxicity of ammonium per chlorate waste water fish Tilapia massambica; Toxicity of chlorinated pesticides on vital organs of fish Puntius tiato; Impact of heavy metal contamination of industrial waste water on cultivated vegetables; Distribution of heavy metals in lake sediments; Rate of reparian vegetation in pollution abatement, Water equality analysis of community ponds; Comparative assessment of ground water; Effects of elevated temperatures on phytoplankton population, Environ metric models in the assessment of surface water quality; Investigation on the physico chemical parameters of tropical river; Ground water arsenic contamination; application of mathematical models in aquatic pollution assessment. Chapter on affect of carbon sources on the biomass build-up and degradation of rubber processing in dusting effluent have added value to the book. Thus the book provides a glimpse of water pollution studies involving assessment of a wide range of data and interdisciplinary processes so as to apply for more efficient methods of water pollution modelling and management.