HYDROCHEMICAL CHARACTERIZATION OF GROUNDWATER OF FIELD Y, OFFSHORE NIGER DELTA

The hydrochemical study exposes the water quality by measuring the concentration of parameters and comparing them with the WHO drinking water standards. Groundwater samples have been collected and analysed for physiochemical characteristics in order to understand the hydrochemistry of the water. The results revealed that ground water has a high electrical conductivity, which could be as a result of more chemicals dissolved in the water and total hardness observed in all samples shows that the water isn't hard water. Major cations and anions were identified using Piper Trilinear diagram Durov diagrams and Stiff diagrams. The parameters studied include; Ph, Electrical conductivity, Temperature, Total Suspended Solid, Turbidity as Chloride, Sulphate, Total Hardness, Total Hydrocarbon Content, Nitrate, Phosphate, Alkalinity, Calcium, Sodium, Magnesium, Potassium, Copper,Chromium,Iron, Zinc. The major cations are: Sodium(Na+), Potassium (K+), Calcium (Ca++), while the major anions are: Bicarbonate (HCO3-), Carbonate(C03--), Sulfate(SO4--), and Chloride(Cl-). TDS is the major physical parameter that is dominant in the Durov diagram, although the analysis in the Durov, Piper and Stiff diagram shows that Ca2+ and HCO3-, are the major cation and anion respectively, i.e, the groundwater in the study area are Ca2+ and HCO3-. It was also observed that the quality of groundwater was suitable for domestic purpose and agricultural purpose.