The porous and permeable calcarienites rocks in Tuticorin areas act as good aquifers source of portable water. Lense of portable water in these zones solve the water problem. In the laterite and the alluvial areas groundwater is in unconfined state in shallow aquifers and in confined state below a blanket of clay of varying thickness in deeper aquifers. Prior to 1930 Tuticorin people quenched their thrust from the perched water in tuticorin are, people used to dug shallow wells and extracted the water then closed them is and when they had gone saline.