Physicochemical, Bacteriological and Biochemical Assessment of Water Samples from Unprotected Wells in Lagos State Metropolis

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Adedayo Emmanuel Ogunware
Pelumi Abimbola Adedigba
Yetunde Ebunlomo Oyende
Adesewa Adeyinka Adekoya
Abosede Racheal Daramola


Aims: This study presents the results of the physicochemical parameter data and water quality index use to assess the quality of unprotected well water in Lagos southwest, Nigeria.

Methodology: 20 water samples were collected from selected locations namely; PPL, Okokomaiko, Cassidy, Iba express and Iba junction and they were analyzed for 7 physical parameters (temperature of the water, temperature of air, colour, odor, turbidity, conductivity, total dissolved solids) and 7 chemical parameters (pH, iron, Total Alkalinity, Total Hardness, Chloride, organic matter and residual chlorine).

Results: The result showed that 5 (25%) samples had pH below the NSDWQ limit for drinking water quality and 10 (50%) samples had conductivity that were above the standard limit. 15 (75%) samples had Total dissolve solid that were above the standard limit. All other physicochemical parameters were within the NSDWQ. Microbiological analyses were done to assess the total plate count and the coliform count of the water samples and the results showed that 9 samples had colonies that were too numerous to count exceeding the permissible limit of 100 CFU/ml set by WHO. The coliform count of the water samples showed that the MPN per 100 ml of all the water samples were above the WHO limit by having results greater than 1. The IMViC result showed that Klebsiella species and Enterobacter species were found in 6 plates (30%), Citrobacter species were found in 7 plates (35%) and Escherichia species were found in 7 plates (35%).

Conclusions: This result highlight that the well water in these areas are not safe for human consumption without additional treatment such as boiling or addition of disinfectants, therefore there is need to enlighten the consumers around these researched study areas to at least disinfect and filtrate their well water before drinking in order to avoid outbreak of waterborne diseases. Physicochemical

Physicochemical, bacteriological, biochemical, Lagos State, analysis, public health and well water.

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How to Cite
Ogunware, A. E., Adedigba, P. A., Oyende, Y. E., Adekoya, A. A., & Daramola, A. R. (2020). Physicochemical, Bacteriological and Biochemical Assessment of Water Samples from Unprotected Wells in Lagos State Metropolis. Asian Journal of Biochemistry, Genetics and Molecular Biology, 3(4), 24-36.
Original Research Article


Møller H, Landt J, Jensen P, Pedersen E, Autrup H, Jensen OM, Nitrate exposure from drinking water and diet in a danish rural population. International Journal Of Epidemiology. 1989;18(1):206-212.

Akoteyon I, Mbata U, Olalude G, Investigation of heavy metal contamination in groundwater around landfill site in a typical sub-urban settlement in alimosho, Lagos-Nigeria. Journal Of Applied Sciences In Environmental Sanitation. 2011;6(2).

Agbaire P, Obi C. Seasonal variations of some physico-chemical properties of river ethiope water in Abraka, Nigeria. Journal Of Applied Sciences And Environmental Management. 2009;13(1).

Majolagbe AO, Adeyi AA, Osibanjo O. Vulnerability assessment of groundwater pollution in the vicinity of an active dumpsite (olusosun), lagos, Nigeria. Chem. Int. 2016; 2(4):232-241.

Gulumbe B, Aliyu B, Manga S. Bacteriological and physicochemical analyses of aliero dam water. International Journal of Inno-Vative Studies in Sciences and Engineering Technology (Ijisset). 2016;2(4):30-43.

Lamikanra A. Essential microbiology for students and practitioners of pharmacy, medicine and microbiology; 1999.

Adelekan B. Water quality of domestic wells in typical african communities: Case studies from Nigeria. International Journal of Water Resources and Environmental Engineering. 2010;2(6):137-147.

Ritter KS, Paul Sibley, Ken Hall, Patricia Keen, Gevan Mattu, Beth Linton, Len. Sources, pathways and relative risks of contaminants in surface water and groundwater: a perspective prepared for the walkerton inquiry. Journal Of Toxicology And Environmental Health Part. A. 2002;65(1):1-142.

Chinedu SN, Nwinyi O, Oluwadamisi AY, Eze VN. Assessment of water quality in canaanland, ota, southwest Nigeria. Agriculture And Biology Journal of North America. 2011;2(4):577-583.

Oluyemi E, Adekunle A, Adenuga A, Makinde W. Physico-chemical properties and heavy metal content of water sources in ife north local government area of Osun State, Nigeria. African Journal of Environmental Science And Technology. 2010;4(10):691-697.

Awoyemi OM, Achudume AC, Okoya AA. The physicochemical quality of groundwater in relation to surface water pollution in majidun area of Ikorodu, Lagos State, Nigeria. American Journal of Water Resources. 2014;2(5):126- 133.

Majolagbe AO, Adeyi AA, Osibanjo O, Adams AO, Ojuri OO. Pollution vulnerability and health risk assessment of groundwater around an engineering Landfill In Lagos, Nigeria. Chem. Int. 2017;3(1):58-68.

Idowu A, Oluremi B, Odubawo K. Bacteriological analysis of well water samples in sagamu. African Journal of Clinical and Experimental Microbiology. 2011;12(2)