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<p>Water pollution may be defined as ―the alteration in physical chemical and biological characteristics of water which may cause harmful effects on humans and aquatic life. Water pollution is the contamination of water bodies (e.g. lakes rivers oceans aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.</p><p>The environmental consequences of rapid industrialisation have resulted in countless incidents of land air and water resources sites being contaminated with toxic materials and other pollutants threatening humans and ecosystems with serious health risks. More extensive and intensive use of materials and energy has created cumulative pressures on the quality of local regional and global ecosystems.</p><p>The importance of water for sustenance of life cannot be overemphasised. Whether it is in use of running water in our homes rearing cattle and growing crops in our farms or the increased uses in industry remain immeasurable. It is important therefore to not that depletion of this commodity either through contamination or careless use results in serous consequences.</p><p>This book serves the compelling demands of the environmentalist civil and environmental engineers operators of water treatment plants environmental protection agencies conservationists law enforcement agencies public administrators and such persons who are involved directly or indirectly with water pollution.</p>
