Electrical conductivity and pH of groundwater: important exploratory tools in groundwater surveys

Abstract

This paper attempts to draw attention to the fact that groundwater electrical conductivity (EC) and pH observations may assist in the development of a conceptual model of the groundwater resources of an area under investigation. The geologic environment investigated is the Benin Formation (Coastal Plain Sands) where the main rock constituents are unconsolidated sands. Water samples were collected from 26 existing boreholes in the area and their EC and pH measurements taken. An analysis of the spatial variation of these parameters indicates that the EC and pH values of groundwater allow us to make deductions not only on the changes in the groundwater quality that may exist in the area but also to estimate relative changes in permeability of the water bearing zones in the area in which they are situated. This will guide water resources planners in making preliminary assessment of the water resources required for the development of an area.

Nigerian Journal of Technology and Education in Nigeria Vol. 8(2) 2003: 76-86