Assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo

<p>The project to reduce environmental and health risks related to the activity of boreholes water sellers in Lomé (in French PRRESAF) was implemented to contribute to the guarantee of public health. One of its objectives is to improve the hydrological understanding of the shallow Continental...

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Autores principales:	K. V. Akpataku, M. D. T. Gnazou, Y. T. Agbefu Nomesi, P. Nambo, K. Doni, L. M. Bawa, G. Djaneye-Boundjou
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Environmental sciences GE1-350 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/bfa1d68fc43848ecbe86bc76dc7caad7
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spelling	oai:doaj.org-article:bfa1d68fc43848ecbe86bc76dc7caad72021-11-16T06:55:09ZAssessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo10.5194/piahs-384-75-20212199-89812199-899Xhttps://doaj.org/article/bfa1d68fc43848ecbe86bc76dc7caad72021-11-01T00:00:00Zhttps://piahs.copernicus.org/articles/384/75/2021/piahs-384-75-2021.pdfhttps://doaj.org/toc/2199-8981https://doaj.org/toc/2199-899X<p>The project to reduce environmental and health risks related to the activity of boreholes water sellers in Lomé (in French PRRESAF) was implemented to contribute to the guarantee of public health. One of its objectives is to improve the hydrological understanding of the shallow Continental Terminal (CT) aquifer tapped by water sellers. It is a vital water resource in the coastal sedimentary extending from Ghana to Nigeria. The results presented here are part of this project and aim at assessing the hydrological factors controlling CT groundwater quality and chemistry using principal component analysis (PCA), hierarchical cluster analysis (HCA), and GIS. High-resolution sampling campaigns for major ions water quality analyses were performed to improve the accuracy of factors assessment. The results showed that groundwater is predominantly acidic with varying degrees of mineralization ranging from very soft to brackish waters. The integration of multivariate results to GIS allows classifying samples into five main groups. They revealed the probable recharge and discharge areas, associated hydrochemical evolution along flow paths, and areas under the high impact of land-use dynamics, wastewaters/sewage infiltration, and interactions with surface water systems. This study appears useful for managing boreholes' water sellers' activity relative to the integrity of groundwater resources and public health.</p>K. V. AkpatakuK. V. AkpatakuM. D. T. GnazouY. T. Agbefu NomesiP. NamboK. DoniL. M. BawaG. Djaneye-BoundjouCopernicus PublicationsarticleEnvironmental sciencesGE1-350GeologyQE1-996.5ENProceedings of the International Association of Hydrological Sciences, Vol 384, Pp 75-80 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Environmental sciences GE1-350 Geology QE1-996.5
spellingShingle	Environmental sciences GE1-350 Geology QE1-996.5 K. V. Akpataku K. V. Akpataku M. D. T. Gnazou Y. T. Agbefu Nomesi P. Nambo K. Doni L. M. Bawa G. Djaneye-Boundjou Assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo
description	<p>The project to reduce environmental and health risks related to the activity of boreholes water sellers in Lomé (in French PRRESAF) was implemented to contribute to the guarantee of public health. One of its objectives is to improve the hydrological understanding of the shallow Continental Terminal (CT) aquifer tapped by water sellers. It is a vital water resource in the coastal sedimentary extending from Ghana to Nigeria. The results presented here are part of this project and aim at assessing the hydrological factors controlling CT groundwater quality and chemistry using principal component analysis (PCA), hierarchical cluster analysis (HCA), and GIS. High-resolution sampling campaigns for major ions water quality analyses were performed to improve the accuracy of factors assessment. The results showed that groundwater is predominantly acidic with varying degrees of mineralization ranging from very soft to brackish waters. The integration of multivariate results to GIS allows classifying samples into five main groups. They revealed the probable recharge and discharge areas, associated hydrochemical evolution along flow paths, and areas under the high impact of land-use dynamics, wastewaters/sewage infiltration, and interactions with surface water systems. This study appears useful for managing boreholes' water sellers' activity relative to the integrity of groundwater resources and public health.</p>
format	article
author	K. V. Akpataku K. V. Akpataku M. D. T. Gnazou Y. T. Agbefu Nomesi P. Nambo K. Doni L. M. Bawa G. Djaneye-Boundjou
author_facet	K. V. Akpataku K. V. Akpataku M. D. T. Gnazou Y. T. Agbefu Nomesi P. Nambo K. Doni L. M. Bawa G. Djaneye-Boundjou
author_sort	K. V. Akpataku
title	Assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo
title_short	Assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo
title_full	Assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo
title_fullStr	Assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo
title_full_unstemmed	Assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo
title_sort	assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of togo
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/bfa1d68fc43848ecbe86bc76dc7caad7
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Assessment of hydrological factors affecting shallow groundwater chemistry in the most urbanized area of the coastal sedimentary basin of Togo

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