Water Quality01
Water quality refers to the chemical, physical, biological, and radiological characteristics of water It is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose It is most frequently used by reference to a set of standards against which compliance can be assessed. The most common standards used to assesswater quality relate to health of ecosystems, safety of human contact and drinking water.
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In the setting of standards, agencies make political and technical/scientific decisions about how the water will be used In the case of natural water bodies, they also make some reasonable estimate of pristine conditions. Different uses raise different concerns and therefore different standards are considered. Natural water bodies will vary in response to environmental conditions. Environmental scientists work to understand how these systems function, which in turn helps to identify the sources and fates of contaminants. Environmental lawyers and policymakers work to define legislation with the intention that water is maintained at an appropriate quality for its identified use.