ASSESSMENT OF GROUNDWATER QUALITY FOR DRINKING PURPOSE IN NAMAKKAL DISTRICT, TAMIL NADU, INDIAS. SAMSON AND K. ELANGOVAN
Geochemical investigations of the groundwater samples from Namakkal district of Tamil Nadu were carried out to assess the quality of groundwater used for drinking purpose during the premonsoon season. Seventy three samples were collected all over the district except the areas of structural hills. The collected samples were tested for the following parameters electrical conductivity, turbidity, pH, total hardness, iron, chlorides, total dissolved solids, calcium, magnesium, potassium manganese, sulphate, nitrate, nitrite and total alkalinity. The test results were interpreted using Indian standard specification IS: 10500 1991 and statistical plots. Higher values of turbidity, total hardness, total dissolved solids, sulphate and total alkalinity influence the quality of groundwater of the study area however some of the samples collected from east, west and central part of the study area are found to be potable. Turbidity is high in the groundwater samples collected from the locations along the river bank which envelops the study area at south west side. The groundwater qualities of north and south side of the study area are unsuitable in any one of the parameters governing the quality.
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