Due to industrialization and urbanization the problem of providing good quality water for drinking and irrigation has become very critical now in Karur district. Hence, in this study, emphasis has been given to water quality for drinking and irrigation in Karur district. In order to assess the groundwater quality, samples were collected from Aravakurichi and K. Paramathi block and analysis for pH, Electrical Conductivity (EC), major cations like calcium, magnesium, sodium, potassium and anions like chloride, sulphate, carbonates and bicarbonates were done in the laboratory using the standard methods given by the American Public Health Association (APHA, 2005). By using the analyzed data, the chemical indices Sodium Adsorption Ratio (SAR) were calculated. It is found that majority of the locations in both the blocks have high levels of calcium, magnesium, chloride and sulphate concentration, while all other were within the permissible limit for drinking. About 79.9% of area is having EC ranging from 0.75-2.25 dS m^-1, which is classified under doubtful class by USSL for irrigation. Water samples were found suitable for irrigation with respect to SAR for both the blocks.

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