EVALUATION OF SUBSURFACE WATER QUALITY BY ESTIMATION OF PHYSICO- CHEMICAL PARAMETERS IN MACHILIPATNAM TOWN, ANDHRA PRADESHP. SRINIVAS, T. SATYA NARAYANA AND G. N. PRADEEP KUMARAbstract The present study was undertaken to ascertain groundwater quality of Machilipatnam town in view of the potability. Groundwater samples at various locations were collected and analysed for some selected physico-chemical parameters such as pH, Specific Conductance, TDS, hardness, total alkalinity, chlorides, calcium, nitrates and sulphates. Except pH, all the collected percentage of samples are above the desirable limits. Strong positive correlation (r=1.000) was obtained between specific conductivity and total dissolved solids.
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