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Assessment of Water Quality and Pollution Status of Nambol River, Manipur
Authors: S. Suma* and R.K. Rajeshwari**
Number of views: 406
ABSTRACT: The present study was carried out to assess the water quality of the Nambol river,
Manipur. Nambol river is one of the most important rivers which drains into the Loktak Lake,
which is one of the lakes of international importance i.e. Ramsar site. The dumping of solid
waste, discharge of sewage, domestic garbage etc. have severely affected the water quality of the
river. Physico-chemical parameters like water temperature, pH, DO, Free Carbon Dioxide,
COD, BOD, total hardness, Chloride, Nitrate and Phosphate were analysed during January
2010 to December 2010. The study was carried out through the collection and laboratory
analysis of the samples taken from the river. The samples were collected on monthly basis and
five replicates of water samples were collected from the two sampling sites, upstream and
downstream. Results indicated high value of BOD, COD, Nitrate and Phosphate in downstream
area than in the upstream area of the Nambol river. This is mostly due to the anthropogenic
activities.