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Assessment of the physico-chemical characteristics and elemental properties of water and sediments from Owan river in Edo State, Nigeria

A Correction to this article was published on 17 September 2021

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The water quality of Owan river, a very important river in Ovia North-East Local Government Area of Edo State, Nigeria was assessed. American Public Health Association (APHA) standard analytical procedures for water and sediment samples were used. Elemental composition of the sediment samples were determined by Energy Dispersive X-ray Fluorescence Spectrometer (EDXRF). Results obtained were statistically analysed (basic descriptive). In water, concentrations (mg/L) of nitrate—(2.65–21.55), sulphate—(58.6–80.0), calcium —(3.21–8.60), dissolved oxygen (5.5–6.53), total hardness (12.60–42.0), alkalinity (32.0–50.5), Cd (0.01), Cr (0.1–0.15), As (0.01–0.05), and Zn (1.4–2.04), electrical conductivity (32.0–38.0 µS/cm) and pH (6.10–6.85) were within environmental standards. However, Fe and Pb were slightly above the standards. In the sediment samples, Al, Si, Fe, and K are the most abundant elements. The highest values were detected as follows: Al—8.09 (SW7), Si—25.08 (SW5), Fe—16.72 (SW6), and K—2.1 (SW7). Urgent checks and monitoring by relevant agencies, government representatives, public health practitioners, and community leaders are required.

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Fig. 1
Fig. 2

Data availability statement

The data presented in this study are available on request from the corresponding author.

Change history



Potentially toxic elements


Trace metals


Nigerian Standard for Drinking Water Quality


United States Environmental Protection Agency


Biochemical oxygen demand


Chemical oxygen demand


Nephelometric turbidity unit


Dissolved oxygen


World Health Organisation


Water sample


Total dissolved salts/solids


Electrical conductivities


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The authors wish to acknowledge the contributions of the people who assisted in the collection of the samples and the anonymous reviewers.


The authors wish to thank Tertiary Education Trust Fund (TETFund) for the research grant received (TETFUND/DRSS/POLY/OWO/2016/RP/VOL 1) through Rufus Giwa Polytechnic, Owo, Nigeria to carry out this research project.

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Correspondence to A. Akinnusotu.

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Akinnusotu, A., Ukpebor, J.E., Okieimen, F.E. et al. Assessment of the physico-chemical characteristics and elemental properties of water and sediments from Owan river in Edo State, Nigeria. Int J Energ Water Res (2021).

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  • Water quality
  • Sediments
  • Owan river
  • Heavy metals
  • Public health
  • Nigeria