Present investigation deals with the evaluation of DO, BOD and COD of six surface water resources of Bikaner district which fall in arid region of Rajasthan -a part of Great Indian Desert, to determine pollution status. Water sample analysed for two years 2008-2009 showed these parameters beyond the limit of standard prescribed by WHO. These parameters also showed great seasonal fluctuation, indicating the degree of organic pollution more during summer season and least during winter season.
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