Micro-Pollutants Characteristics of Yamuna River Water at Various from Palla to Etawah U.P.

Concentration of Pollutants from Palla to Agra d/s was varied from 1.79 mg/l (Palla, 2011) to around 12.00 mg/l (Pall 2014 & Nizamuddin bridge (quarter stream), 2014) . The maximum concentration of zinc 1.37 mg/l was observed in June, 2015 at Palla. The average of zinc concentration was in the range of 0.01 (Nizamuddin Bridge Midstream, 2015) to 0.54 mg/l (Nizamuddin bridgequarterstream, 2014). Significant concentration of heavy metals in the Yamuna was generally observed either during the lean flow period or at the onset of monsoon period. These metals generally reached up to the riverthrough flushing from various point and non-point sources. At Palla, which is relatively clean location on the basis of organic pollution, sometimes high concentration of few metals may contributed by various large scale electroplating industries located at Sonepat, upstream town of Palla. At Palla, the riverbed is silty as compared to other locations, which are having organic sludge deposition at riverbed. Silt have very less affinity to absorb the metals as compared to sludge. This may also be a reason that the metals remain in the water, if flushed into river instead of their deposition at the riverbed along with the sludge. The mercury, which was studied once in a year (June month) at all the locations, was not traceable in the entire Yamuna stretch during the study period.