Imprints of sea surge and municipal activities on non-potability of groundwater in shallow coastal sandy aquifer system of Lagos State, Southwestern Nigeria

Asiwaju-Bello, Yinusa Ayodele; Olabode, Oluwaseun Franklin; Owoseni, Joshua Oluwasanmi; Daramola, S. O.; Ogunsuyi, Miriam Tolulope; Yusuf, L.A.; Utulu, B.S.; Adiele, T.; Shodeinde, R.

doi:10.1016/j.gsd.2021.100613

Cited by 4 publications

(1 citation statement)

References 55 publications

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“…facies, observed in sixteen (55%) wells, indicates occurrence of high salinity caused by overexploitation of groundwater by consumers, seawater encroachment, domestic wastewater and septic tank in ltration(Appelo and Postma, 1996;Asiwaju et al, 2021). This NaCl dominance is an expected outcome for coastal groundwater as reported by Asiwaju et al, 2021 and Badmus et al, 2020 in their reports of various hydrogeochemical studies of some coastal aquifers in Nigeria.…”

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Conceptualization of Pollution of Groundwater Resources in Ilaje Area, Nigeria, West Africa: Contribution From Hydrogeochemical and Numerical Index Techniques

Erukubami¹,

Adelakun²,

Asiwaju-Bello³

et al. 2021

Preprint

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Ilaje is a coastal settlement in Nigeria with a large number of its population depending on groundwater, through hand-dug wells, for domestic and irrigation use. Due to the vulnerability of coastal aquifers to contamination, for this study, 29 groundwater samples were analyzed for physicochemical parameters, major ions and trace elements to appraise the quality, pollution status and health risks of Ilaje water sources. Hydrogeochemical analysis revealed cationic, anionic and trace metals concentrations in these orders: Na+>K+>Mg2+>Ca2+, HCO3->Cl->SO42->NO3-, and Fe2+> Co2+>Pb2+> Ni2+> Mn2+ respectively and prevalence of Na-Cl facies suggesting imprints of saline-water intrusion. The results from the pollution evaluation and irrigation index methods revealed that the groundwater has significant trace metal pollution and has low to no suitability for irrigation. Furthermore, in this study, the carcinogenic and non-carcinogenic health risks posed by ingestion of the water to adults and children were determined using Probability of Cancer Risk, Chronic Daily Intake, Health hazard Quotient and Indices. It was discovered that upon exposure to the water for a long period of time, residents are prone to illnesses such as kidney disfunction, brain damage, diabetes and cancer. The pollution of the shallow groundwater resources hinges on the highly porous and permeable nature of the alluvial aquifer system of the area. This work recommends solutions like proper monitoring system and treatment plants installation to control the problem of groundwater pollution in the area.

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confidence: 76%

Conceptualization of Pollution of Groundwater Resources in Ilaje Area, Nigeria, West Africa: Contribution From Hydrogeochemical and Numerical Index Techniques

Erukubami¹,

Adelakun²,

Asiwaju-Bello³

et al. 2021

Preprint

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Water scarcity in the fast‐growing megacity of Lagos, Nigeria and opportunities for managed aquifer recharge

Olabode,

Comte

2024

WIREs Water

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In the last three decades, the world has experienced a rapid emergence of megacities. The increasing demographics, urbanization, and water demand brought severe and undesired effects on the quantity and quality of their water resources. A prime example is Lagos (Nigeria, West Africa), which is projected to become the world's largest city by 2100, and faces water scarcity challenges common to other megacities of developing countries. A literature review reveals the vast gap between water demand and regulated supply, inadequate knowledge and information on the current state of water (re)sources, and major, yet unregulated, use of groundwater. It further highlights the impacts of uncontrolled wastewater discharge into surface waters and aquifers, the role of increasing paved surfaces and blocked drainages on flooding, the inadequate supply of potable water, and the unsustainable abstraction of groundwater. Here, we examine the potential of managed aquifer recharge (MAR) to address these recurrent challenges across the megacity. The analysis reveals the opportunities and potential risks associated with the capture of wastewater, storm water, and brackish surface water for MAR. These waters, after appropriate treatment and subsurface storage may bridge the growing water supply–demand gap and mitigate the effects of groundwater (over)exploitation, including aquifer depletion, saltwater intrusion and land subsidence. Immediate efforts should focus on improving the conceptual and quantitative knowledge of Lagos' hydrogeology and groundwater resources through comprehensive spatial–temporal groundwater monitoring and socio‐economic studies of groundwater access and use. The insights provided may inform other fast‐growing coastal megacities in Africa and the wider developing world.This article is categorized under: Science of Water > Water and Environmental Change Engineering Water > Water, Health, and Sanitation Human Water > Value of Water Science of Water > Hydrological Processes

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Groundwater quality in the vicinity of a dumpsite in Lagos metropolis, Nigeria

Ferreira,

Adama-Ajonye,

Ikenna

et al. 2023

Geography and Sustainability

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Imprints of sea surge and municipal activities on non-potability of groundwater in shallow coastal sandy aquifer system of Lagos State, Southwestern Nigeria

Cited by 4 publications

References 55 publications

Conceptualization of Pollution of Groundwater Resources in Ilaje Area, Nigeria, West Africa: Contribution From Hydrogeochemical and Numerical Index Techniques

Conceptualization of Pollution of Groundwater Resources in Ilaje Area, Nigeria, West Africa: Contribution From Hydrogeochemical and Numerical Index Techniques

Water scarcity in the fast‐growing megacity of Lagos, Nigeria and opportunities for managed aquifer recharge

Groundwater quality in the vicinity of a dumpsite in Lagos metropolis, Nigeria

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