Microbial Ecology and Public Health Risk Assessment of the Ologbo River, Ikpoba-Okha LGA, Edo State, Nigeria

References

[1] Adefisoye, M. A., & Okoh, A. I. (2016). Identification and antimicrobial resistance prevalence of pathogenic Escherichia coli strains from treated wastewater effluent in Eastern Cape, South Africa. MicrobiologyOpen, 5(1),143–151. https://

[2] American Public Health Association (APHA). (2017). Standard methods for the examination of water and wastewater (23rd ed.). APHA/AWWA/WEF.

[3] Bartram, J., & Pedley, S. (2021). Water quality and health: Review of microbiological aspects. International Journal of Environmental Research and Public Health, 18(2), 421–437. https://

[4] Clinical and Laboratory Standards Institute (CLSI). (2023). Performance standards for antimicrobial susceptibility testing (33rd ed.). CLSI Supplement M100.

[5] Edokpayi, J. N., Odiyo, J. O., & Durowoju, O. S. (2020). Impact of wastewater on surface water quality in developing countries: A case study of South Africa. In Water Quality (pp. 401–416). IntechOpen. https://

[6] Egbueri, J. C. (2020). Groundwater quality assessment using pollution index of groundwater (PIG), ecological risk index (ERI), and hierarchical cluster analysis (HCA): A case study from Southwestern Nigeria. Environmental Systems Research, 9(1), 33. https://

[7] Ezeh, C. I., & Ananwude, A. C. (2020). Environmental implications of crude oil exploration and production in Nigeria’s Niger Delta. Energy and Environment Research, 10(1), 1 –14. https://

[8] Gibney, K. B., O’Toole, J., Sinclair, M., & Leder, K. (2017). Quantitative microbial risk assessment and infectious diseases. In Encyclopedia of Environmental Health (2nd ed., pp. 657 –666). Elsevier. https:// 9.10857-0

[9] Haas, C. N., Rose, J. B., & Gerba, C. P. (2014). Quantitative microbial risk assessment (2nd ed.). John Wiley & Sons.

[10] Igbinosa, E. O., & Okoh, A. I. (2009). Impact of discharge wastewater effluents on the physico- chemical qualities of a receiving watershed in a typical rural community. International Journal of Environmental Science & Technology, 6(2), 175–182. https://

[11] Igbinosa, E. O., Uyi, O. O., Odjadjare, E. E., Ajuzie, C. U., Orhue, P. O., & Adewole, E. M. (2013). Assessment of physicochemical qualities, heavy metals and antibiotic resistance properties of bacteria isolated from river water in Southern Nigeria. African Journal of Environmental Science and Technology, 7(5), 144–153. https://

[12] Nduka, J. K., & Orisakwe, O. E. (2011). Water- quality issues in the Niger Delta of Nigeria: A look at heavy metal levels and some physicochemical properties. Environmental Science and Pollution Research, 18(2), 237– 246. https://

[13] Newton, R. J., Jones, S. E., Eiler, A., McMahon, K. D., & Bertilsson, S. (2011). A guide to the natural history of freshwater lake bacteria. Microbiology and Molecular Biology Reviews, 75(1), 14 –49. https://

[14] Nigerian Meteorological Agency (NIMET). (2023). Nigerian Meteorological Agency Climate Report 2023. Abuja: NIMET.

[15] Nigerian Standard for Drinking Water Quality (NSDWQ). (2015). Nigerian Standard for Drinking Water Quality. Nigerian Industrial Standard (NIS 554:2015). Standards Organisation of Nigeria (SON).

[16] Nwidu, L. L., Oveh, B., Okoriye, T., & Vaikosen, N. A. (2016). Assessment of the water quality and prevalence of water borne diseases in Amassoma, Niger Delta, Nigeria. African Journal of Environmental Science and Technology, 10(9), 293 –303. https://

[17] Odonkor, S. T., & Ampofo, J. K. (2013). Escherichia coli as an indicator of bacteriological quality of water: An overview. Microbiology Research, 4(1), e2. https://

[18] Ogunyemi, A. L., Fagbohun, O. F., & Akinloye, O. A. (2019). Bacteriological and physicochemical assessment of Osun River, Southwestern Nigeria. Applied Water Science, 9(6), 1–9. https:// 1037-4

[19] Owamah, H. I. (2014). Water quality assessment of the Warri River, Nigeria: A study of the impact of industrial discharges. Journal of Environmental Health Science & Engineering, 12(1), 1 –12. https://

[20] Teunis, P. F. M., Moe, C. L., Liu, P., Miller, S. E., Lindesmith, L., Baric, R. S., Le Pendu, J., & Calderon, R. L. (2008). Norwalk virus: How infectious is it? Journal of Medical Virology, 80(8),14681476.https:// 37

[21] World Health Organization (WHO). (2023). Guidelines for drinking-water quality (4th ed.). WHOPress.https://www.who.int/publications/i/i tem/9789241549950

@article{1710145,
      author = {Emmanuel Afeonkhai},
      title = {Microbial Ecology and Public Health Risk Assessment of the Ologbo River, Ikpoba-Okha LGA, Edo State, Nigeria},
      journal = {Iconic Research And Engineering Journals},
      year = {2025},
      volume = {9},
      number = {2},
      pages = {507-514},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1710145.pdf},
      abstract = {The Ologbo River in Ikpoba-Okha LGA, Edo State, Nigeria, is a vital water source but is increasingly exposed to microbial contamination from human, agricultural, and industrial activities. This study assessed its microbial ecology and public health risks across wet and dry seasons. Water samples from six stations were analysed for Escherichia coli, total and faecal coliforms, Salmonella spp., Shigella spp., and physicochemical parameters. All microbial indicators exceeded WHO and Nigerian drinking water limits, with higher loads in the wet season (p<0.05) and downstream sections most affected. Antimicrobial resistance was common, especially to ampicillin and tetracycline. Quantitative Microbial Risk Assessment indicated infection probabilities far above WHO benchmarks, signalling significant waterborne disease risks. Findings call for urgent pollution control, regular monitoring, and safe water interventions to protect community health.},
      keywords = {Ologbo River; microbial ecology; faecal contamination; antimicrobial resistance; quantitative microbial risk assessment; public health},
      month = {August},
  }