News tagged with contaminants

Related topics: groundwater , drinking water , water , bacteria , outbreak

Water from improved sources is not consistently safe

Although water from improved sources (such as piped water and bore holes) is less likely to contain fecal contamination than water from unimproved sources, improved sources in low- and middle-income countries are not consistently ...

May 06, 2014
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Pollution

Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms . Pollution can take the form of chemical substances, or energy, such as noise, heat, or light energy. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring; when naturally occurring, they are considered contaminants when they exceed natural levels. Pollution is often classed as point source or nonpoint source pollution. The Blacksmith Institute issues annually a list of the world's worst polluted places. In the 2007 issues the ten top nominees are located in Azerbaijan, China, India, Peru, Russia, Ukraine and Zambia.

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