The Physico-Chemical Characteristics of Groundwater Quality in Some Coastal Areas of Akwa Ibom State, Nigeria

This study analyzed the physico-chemical characteristics of groundwater quality in some coastal areas of Akwa Ibom State, Nigeria. The study utilized primary data obtained from thirty boreholes in the area. The primary data consist of water quality parameters obtained from laboratory analysis of collected groundwater samples in the study area. Spatial distribution of groundwater constituents was carried out using ArcGIS 10.4 software. The result indicated that the groundwater in the coastal areas id acidic (pH ranges from 3.9 to 6.4); chloride ranges from 2.0mg/l to 52.0mg/l; total dissolved solids ranges from 4.8mg/l to 128.2mg/l; nitrate ranges from <0.01mg/l to 10.0mg/l; and turbidity ranges from 1.0 NTU to 3.11 NTU. The result also indicates that the groundwater is saline (salinity level range from 4.32mg/l to 85.8mg/l); turbidity at some locations also exceeds permissible standards. The study revealed that the quality of groundwater in the coastal areas is poor and not suitable for human consumption acidic and saline. Therefore, the groundwater in the coastal areas should be treated for acidity and salinity before domestic use

Evaluation of hydrochemical characteristics and flow directions of groundwater quality in Udi Local Government Area Enugu State, Nigeria

A hydrogeological study was conducted at the Udi Local Government Area in south-eastern region of Nigeria to examine the hydrochemical constituent of groundwater and determine the quality for drinking and agricultural purposes. Results show that groundwater in the area is slightly acidic to slightly basic, soft and potable, when compared with the World Health Organisation standards for drinking water, and is suitable for agricultural purposes. The groundwater flow direction was determined to establish the implications of pollution from any water contamination. Twenty-one groundwater samples from existing boreholes were collected and analysed for various physicochemical parameters using standard field and laboratory techniques. Distribution of major ions was plotted on a Trilinear Piper diagram. Ajali Sandstone, known as major aquiferous layer in the area, outcrops predominately in sandy bed with medium to coarse-grained sediments. The aquifers are unconfined, semi-confined and with hydraulic conductivity values ranging from 9.0 x 10(-2) to 8.5 x 10(-2) m/day indicating medium transmissivity of groundwater in some areas and a flow net south to northward groundwater flow towards the coast. This explains why the aquifer does not appear to be very permeable and only provides a medium yield of good quality water in some regions of the study area