4 Conclusion
Natural water is a vivacious chemical arrangement comprising in its composition a
complex collection of gases, mineral and organic essences in the appearance of true
solutions, and suspended and colloidal matters also. There are various natural and
anthropogenic factors that affect the basic physical, chemical and biological properties of natural water. Among them waterborne pathogens and chemical contaminants are major concern for public health on local, regional and global scale, not
only with respect to morbidity and mortality but by the high cost of their prevention
and treatment. At present, the continuous rise in concentration level of these pollutants which reached up to alarming level, making the environment and habitat
unsuitable to survive. The maintenance of quality water and its safety is an
important to avoid long-term irreversible effects on human health. In this review we
reviewed various water pollutants, their source in atmosphere and impact on
environment and human health. Nutrients like NO 3 and PO 4 are responsible for
eutrophication and poses various health impacts on human health are arise mainly
from agricultural activities. The source of halogens in water is both natural and
anthropogenic. Heavy metals in water come mainly through industrial activities but
some heavy metals like, As and Cr are geogenic also. Microbial pollutants in water
bodies are come mainly by human excreta and poses serious health consequences
on human health. Radioactive pollution, thermal pollution and suspended soiled are
the new dimensions in the field of water pollution also briefly discussed in this
study.
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