An assessment of water quality of river cauvery and its tributaries arasalar with reference to physico-chemical paremeters at Tanjore Dt, Tamilnadu, India.

ABSTRACT

Present work deals with an assessment of some physico chemical parameters of the water bodies of two rivers (Cauvery and Arasalar) which is suitable for human consumption have been carried out during the period of one year (January 2010 to December 2010). Analysis of some physico-chemical characteristics like air temperature, water temperature, transparency, electrical conductivity, total solids, total dissolved solids, total suspended solids, pH, free carbon dioxide, dissolved oxygen, BOD and COD has been done during the investigation period. BOD values were not compiling with WHO guide lines in the River Cauvery and total solids and BOD values were not compiling with WHO guide lines in the River Arasalar. Study indicates the rivers were slightly polluted by anthropogenic performance due to local anthropogenic activities, agricultural runoff and discharge of untreated municipal sewage, religious credence and subject to amend owed to seasons, climate and flows and influx of waters from various tributaries. In addition present study points out that the river Arasalar facing severe pollution followed by the river Cauvery.