Estimations of Dissolved Oxygen (DO), Chemical Oxygen Demand (COD) and Trace Elements in Borehole Water from Local Government Areas in Plateau State, Nigeria

This paper presents the results of an
investigations into the levels of dissolved
oxygen(DO),chemical oxygen demand(COD), chloride,
sodium, potassium, lead, arsenic, and cadmium in
boreholes water in some local government areas of Plateau
State, Nigeria. The study samples comprised samples
collected from 50 boreholes located in ten (10) local
government areas. The data were collected using standard
water analysis procedures, and the results were analyzed
using Association of Official Analytical Chemists(2019)
manual. The results revealed that all the parameters
measured fell within the recommended values for drinking
water quality, Though, the Nigeria Industrial
Standard(NIS)has the maximum concentration reference
ranges for Sodium, Chloride, Lead, Cadmium and Arsenic
as 200mg/L,250mg/L,0.01mg/L,0.003mg/L and 0.01mg/L
respectively.

Also, the NIS did not have a threshold values for
dissolved oxygen (DO),chemical oxygen demand (COD)
and potassium for the boreholes water samples. The study
concluded that the boreholes water from the study area
was generally of good quality and suitable for drinking
since there were no contaminations of the water samples
by any of the metals, The findings of the study could form
the basis for further research and the implementation of
appropriate water quality management measures.