Journal of Advances in Environmental Health Research

Journal of Advances in Environmental Health Research

Evaluation of Physicochemical Properties, Heavy Metal Contamination and Health Risk Implications, and Microbial Integrity of Borehole Water in Odogunyan-Ikorodu, Lagos, Nigeria

Document Type : Original Article

Authors
Tajudeen O. Yahaya 1
Umar Faruk Mohammed 2
Abdulmalik Abdulazeez 1
1 Department of Biological Sciences, Federal University Birnin Kebbi, Nigeria
2 Department of Pure and Industrial Chemistry, Federal University Birnin Kebbi, Nigeria
10.34172/jaehr.1411
Abstract
Background: Contaminated water remains a major cause of disease worldwide, emphasizing the need for regular safety evaluations of water sources in residential areas. This study aimed to assess the physicochemical properties, heavy metal concentrations, and microbial contamination of borehole water in Odogunyan-Ikorodu, Lagos.
Methods: The water samples were collected from Ademotu, Three Brothers, Olafiku, Cammy, Leke Silas, Alaba, Opeloyeru, Sakajojo, AOJS, and Omeji streets and analyzed using standard procedures. The results for each parameter were compared with the World Health Organization (WHO) guideline values. Also, the average daily intake (ADI) and hazard quotient (HQ) of the heavy metals were calculated to evaluate potential health risks.
Results: Physicochemical analysis indicated that temperature, pH, dissolved oxygen (DO), conductivity, total dissolved solids (TDS), and hardness were within permissible limits. However, concentrations of lead (Pb) and mercury (Hg) exceeded the limits ( ≤ 0.01 mg/L for Pb and ≤ 0.006 mg/L for Hg) at all locations. Iron (Fe) levels were also above the permissible limit ( ≤ 0.3 mg/L) in samples from Ademotu, Three Brothers, Olafiku, Cammy, and Leke Silas, whereas zinc (Zn) and chromium (Cr) concentrations were within acceptable ranges. Although the ADI values for all heavy metals were within the threshold, the HQ exceeded the acceptable value ( ≤ 1) in all sampling sites. Microbiological analysis showed that all samples contained non-permissible levels of bacteria and coliforms.
Conclusion: These findings indicate that the borehole water poses potential health risks. Regular monitoring and appropriate treatment are vital to protect public health in the community.
Keywords
Average daily intake
Borehole
Coliforms
Lead
Mercury

Subjects

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Journal of Advances in Environmental Health Research
Volume 13, Issue 4
Autumn 2025
Pages 279-286