Ground water samples from 83 villages in Honnali taluk of Davangere district were analyzed for their suitability for irrigation purpose with special reference to presence of fluoride content. Ground water in the study area was classified according to sodium adsorption ratio and electrical conductivity.

The present study aims at the assessment of water quality in Mallapura tank of Chitradurga, Karnataka. The physico-chemical parameters of the Mallapura tank has been studied monthly during the year October 2004 to September 2005 from one site. The results revealed that most of the water quality parameters are not within the permissible limit as per WHO and BIS standards.