[ Evaluation de la qualité physicochimique de l’eau des forages dans la région du centre-nord au Burkina Faso: Cas des écoles primaires ]
Volume 29, Issue 4, July 2020, Pages 1349–1357
Aminata Kaboré1, Inoussa Zongo2, Boubacar Savadogo3, Jacques Sawadogo4, Damien Kaboré5, Lambert Z. P. Nikiema6, and Paul Windinpsidi Savadogo7
1 Institut de l’Environnement et de Recherches Agricoles, 04 BP 8645, Burkina Faso
2 Institut de Recherche en Sciences Appliquées et Technologies 03 BP 7047, Burkina Faso
3 Institut de Recherche en Sciences de la Santé (IRSS), Centre National de la Recherche Scientifique et Technologique (CNRST), Ouagadougou, Burkina Faso
4 Centre National de la Recherche Scientifique et Technologique, Département des Ressources Naturelles et Systèmes de Productions, Laboratoire Sol eau plante (SEP), 01 BP 476 Ouagadougou 01, Burkina Faso
5 Catholic Relief Services (CRS), 01 BP 469 Ouagadougou 01, Burkina Faso
6 Catholic Relief Services (CRS), 01 BP 469 Ouagadougou 01, Burkina Faso
7 Laboratoire Sol-Eau-Plante. Institut de l'Environnement et de Recherches Agricoles (INERA), Ouagadougou, Burkina Faso
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
To rise to the challenge of access to safe drinking water, hygiene and sanitation, Catholic Relief Services through his project named Koom yilma provided fifty-seven (57) elementary schools with boreholes in the centre-north region in Burkina Faso. This study aims to assess the organoleptic, physicochemical and heavy metal contents of water consumed in these schools. Thus, twenty-three (23) parameters were analyzed according to international standards. The results showed that the turbidity of 25% of water samples from boreholes were between 5.4-66.33 NTU, so non-compliant with WHO standard. The pH of 17.30% of water samples was between 8.52-8.9. 0.325-2.62 mg/L of iron were observed in 28.85% of water samples. The content of potassium was above WHO standard in 13.46% of water. Concerning nitrate and arsenic, 3.8% of samples were non-compliant with WHO standards. Water from Saada borehole was contaminated with 101.725 mg/L and those from Yaoghin with 125 µg/L of arsenic. Globally, waters from boreholes located in schools were of good quality except those of Saada and Yaoghin. Despite these good results, it is necessary to monitor the physicochemical and toxicological quality of these groundwater because of the geological context of site (gold region). That will prevent the consumption of water contaminated with heavy metal and therefore chronic diseases among children.
Author Keywords: Drinking water supply, Pollution, Heavy metals, Groundwater, Burkina Faso.
Volume 29, Issue 4, July 2020, Pages 1349–1357
Aminata Kaboré1, Inoussa Zongo2, Boubacar Savadogo3, Jacques Sawadogo4, Damien Kaboré5, Lambert Z. P. Nikiema6, and Paul Windinpsidi Savadogo7
1 Institut de l’Environnement et de Recherches Agricoles, 04 BP 8645, Burkina Faso
2 Institut de Recherche en Sciences Appliquées et Technologies 03 BP 7047, Burkina Faso
3 Institut de Recherche en Sciences de la Santé (IRSS), Centre National de la Recherche Scientifique et Technologique (CNRST), Ouagadougou, Burkina Faso
4 Centre National de la Recherche Scientifique et Technologique, Département des Ressources Naturelles et Systèmes de Productions, Laboratoire Sol eau plante (SEP), 01 BP 476 Ouagadougou 01, Burkina Faso
5 Catholic Relief Services (CRS), 01 BP 469 Ouagadougou 01, Burkina Faso
6 Catholic Relief Services (CRS), 01 BP 469 Ouagadougou 01, Burkina Faso
7 Laboratoire Sol-Eau-Plante. Institut de l'Environnement et de Recherches Agricoles (INERA), Ouagadougou, Burkina Faso
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
To rise to the challenge of access to safe drinking water, hygiene and sanitation, Catholic Relief Services through his project named Koom yilma provided fifty-seven (57) elementary schools with boreholes in the centre-north region in Burkina Faso. This study aims to assess the organoleptic, physicochemical and heavy metal contents of water consumed in these schools. Thus, twenty-three (23) parameters were analyzed according to international standards. The results showed that the turbidity of 25% of water samples from boreholes were between 5.4-66.33 NTU, so non-compliant with WHO standard. The pH of 17.30% of water samples was between 8.52-8.9. 0.325-2.62 mg/L of iron were observed in 28.85% of water samples. The content of potassium was above WHO standard in 13.46% of water. Concerning nitrate and arsenic, 3.8% of samples were non-compliant with WHO standards. Water from Saada borehole was contaminated with 101.725 mg/L and those from Yaoghin with 125 µg/L of arsenic. Globally, waters from boreholes located in schools were of good quality except those of Saada and Yaoghin. Despite these good results, it is necessary to monitor the physicochemical and toxicological quality of these groundwater because of the geological context of site (gold region). That will prevent the consumption of water contaminated with heavy metal and therefore chronic diseases among children.
Author Keywords: Drinking water supply, Pollution, Heavy metals, Groundwater, Burkina Faso.
Abstract: (french)
Pour relever les défis en matière d’eau potable, d’hygiène et d’assainissement, Catholic Relief Services à travers le projet Koom yilma a doté 57 écoles primaires de la région du centre-nord de forages à motricité humaine. Cette étude vise à évaluer la qualité organoleptique, physicochimique et les teneurs de métaux lourds des eaux consommées dans ces écoles. Pour cela, vingt-trois paramètres ont été analysés selon les normes internationales. Il ressort des résultats que la turbidité de 25% des échantillons était non conforme à la norme de l’OMS (5,4 - 66,33 NTU). 17,30% des eaux avaient un pH compris entre 8,52 et 8,9 et 28,85% contenaient 0,325-2,62 mg/L de fer. La teneur en potassium était supérieure à la norme dans 13,46% des échantillons d’eau. En ce qui concerne le nitrate et l’arsenic, 3,8% des échantillons n’étaient pas conformes à la norme. Pour ces paramètres, les concentrations les plus élevées ont été observées dans l’eau du forage de Saada (101,72 mg/L) et yaoghin (125 µg/L) respectivement pour le nitrate et l’arsenic. Globalement, pour la plupart des paramètres à impact sanitaire, l’eau de forage des écoles d’intervention de koom-yilma est de bonne qualité, excepté celles de Saada et Yaoghin. Malgré ces bons résultats, il est nécessaire de suivre la qualité physicochimique et toxicologique des eaux afin de déceler toute variation importante qui pourrait survenir au regard du contexte géologique du site (région aurifère). Cela permettra de prévenir la consommation d’eau contaminée aux métaux lourds et donc des maladies chroniques chez les enfants.
Author Keywords: Approvisionnement en eau potable, Pollution, Métaux lourds, Eau souterraine, Burkina Faso.
How to Cite this Article
Aminata Kaboré, Inoussa Zongo, Boubacar Savadogo, Jacques Sawadogo, Damien Kaboré, Lambert Z. P. Nikiema, and Paul Windinpsidi Savadogo, “Assessment of physicochemical quality of drinking water from boreholes in the Centre-North région in Burkina Faso: Case of elementary schools,” International Journal of Innovation and Applied Studies, vol. 29, no. 4, pp. 1349–1357, July 2020.
