Water quality of Tons river near Tapkeshwar temple in Dehradun was assessed in terms of their physicochemical parameters. Samples were collected on the monthly basis since January to March, 2011 from three sites viz confluence zone of temple, upstream and downstream river water. Total number of nine samples were analysed and a correlation matrices among parameters was determined. River water was showing alkaline character throughout the study period. pH, alkalinity and chloride were found to be under the acceptable limit of BIS (2009),
although turbidity and hardness were exceeding the limits at all three sites but total dissolved solid only on confluence zone and downstream river sites. Water samples from the confluence zone near the temple showed slightly higher concentration of all the parameters than other sites. The present study reveals the slight effects of various religious activities on confluence site of tons river water near the temple which were found to be under the prescribed permissible limits of BIS (2009).
Confluence zone, Downstream, Tapkeshwar temple, Tons River, Upstream
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