PPT: Water Quality | Environmental Engineering - Civil Engineering (CE)

 Page 1


Water 
quality
Page 2


Water 
quality
Page 3


Water 
quality
Great Lakes
Fr 
Page 4


Water 
quality
Great Lakes
Fr 
Water quality is the physical, chemical and 
biological 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 assess water 
quality relate to health of ecosystems, safety 
of human contact and drinking water.
Page 5


Water 
quality
Great Lakes
Fr 
Water quality is the physical, chemical and 
biological 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 assess water 
quality relate to health of ecosystems, safety 
of human contact and drinking water.
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.