Assessment on Seasonal Variation of Groundwater Quality of Phreatic Aquifers – a River Basin System

  • C. M. Laluraj
  • Girish Gopinath


Spatial distribution of pH, electrical conductivity (EC), total dissolved solids (TDS), fluoride and total iron content of ground water samples collected from the muvattupuzha river basin, Kerala, India, has been studied for pre monsoon and post monsoon periods of year 2001. Results showed the groundwater of the basin is acidic for which the pH values ranged between 5.5 and 8.0. Average EC was found to be less than 100 μS/cm, for most of the study region. The pre monsoon minimum and maximum TDS were found as 25.6 and 227.84 mg/L respectively, where as post monsoon values ranged between 16 and 162.56 mg/L. The relatively low EC and TDS values found both during the seasons in the lateritic terrain of the river basin signifies the lower residence time of ground water with the country rock. This makes the groundwater quality of this river basin as good. Pre monsoon season samples showed high total iron content than that during the post monsoon period. During the study period values of the fluoride contents were found to be within the permissible limits.


groundwater quality phreatic aquifers pre and post monsoon periods river basin 


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© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  1. 1.National Institute of OceanographyRegional CentreCochinIndia
  2. 2.Department of Marine Geology and GeophysicsCochin University of Science and TechnologyCochinIndia

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