Tarlac Dike by Polotan

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Water pollution
From Wikipedia, the free encyclopedia

Raw sewage and industrial waste flows across international borders—New Riverpasses from Mexicali to Calexico, California.
Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans and groundwater). Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds.
Water pollution affects plants and organisms living in these bodies of water; and, in almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities.
Contents [hide]   * 1 Introduction   * 2 Categories       * 2.1 Point sources       * 2.2 Non–point sources   * 3 Groundwater pollution   * 4 Causes       * 4.1 Pathogens       * 4.2 Chemical and other contaminants       * 4.3 Thermal pollution   * 5 Transport and chemical reactions of water pollutants   * 6 Measurement       * 6.1 Sampling       * 6.2 Physical testing       * 6.3 Chemical testing       * 6.4 Biological testing   * 7 Control       * 7.1 Domestic sewage       * 7.2 Industrial wastewater       * 7.3 Agricultural wastewater       * 7.4 Construction site stormwater       * 7.5 Urban runoff (stormwater)   * 8 See also   * 9 References   * 10 External links |
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Introduction

Millions depend on the polluted Ganges river.
Water pollution is a major global problem. It has been suggested that it is the leading worldwide cause of deaths and diseases,[1][2] and that it accounts for the deaths of more than 14,000 people daily.[2] An estimated 700 million Indians have no access to a proper toilet, and 1,000 Indian children die of diarrheal sickness every day.[3] Some 90% of China's cities suffer from some degree of water pollution,[4] and nearly 500 million people lack access to safe drinking water.[5] In addition to the acute... [continues]

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