Assessment of water quality of river Kosi in Rampur (Uttar Pradesh), India by using water quality index

摘要

Kosi river water was collected at six different sites and analysed for determining the extent of pollution in the river. It was found that river is highly polluted with reference to water parameters at all the six sites. The present study shows that the river was found to be alkaline at every site as the value of alkalinity is very high as compared to WHO standards. Analysis of data shows that biochemical oxygen demand and chemical oxygen demand values are very high as compared to WHO standards and dissolved oxygen value is low shows that water is highly contaminated. The variation in the values of physico-chemical water parameters are only due to various activities like sewage waste mixing, discharge of various small scale industries and other mankind activities noticed at these sites. The water quality index was found to be 345.82 which is very high as compared to permissible limit, shows river water cannot be used for domestic or agriculture purposes.