International Journal of
Water Resources and Environmental Engineering

  • Abbreviation: Int. J. Water Res. Environ. Eng.
  • Language: English
  • ISSN: 2141-6613
  • DOI: 10.5897/IJWREE
  • Start Year: 2009
  • Published Articles: 331

Full Length Research Paper

Assessment of the physico-chemical and bacteriological quality of the waters of the quaternary aquifer of the city of Mao in Chad

MAHAMAT NOUR Abdallah
  • MAHAMAT NOUR Abdallah
  • Department of Geology, Laboratory of Hydro-Geosciences and Reservoirs, University of N’Djamena, N’Djamena, Chad.
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ABDERAMANE Hamit
  • ABDERAMANE Hamit
  • Department of Geology, Laboratory of Hydro-Geosciences and Reservoirs, University of N’Djamena, N’Djamena, Chad.
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MOUSA Abderamane
  • MOUSA Abderamane
  • Department of Geology, Laboratory of Hydro-Geosciences and Reservoirs, University of N’Djamena, N’Djamena, Chad.
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MOUSSA Batrane
  • MOUSSA Batrane
  • Department of Geology, Laboratory of Hydro-Geosciences and Reservoirs, University of N’Djamena, N’Djamena, Chad.
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  •  Received: 06 June 2021
  •  Published: 31 August 2021

Abstract

The objective of this work is to characterize the quality of drinking water in the city of Mao and its surroundings. This study is based on 20 water samples collected in the city of Mao and its surroundings between 2018 and 2020. The parameters considered are the physicochemical parameters (pH, T°, Electrical conductivity), major chemistry and bacteriological. The chemical analysis made it possible to highlight three types of chemical water facies: chlorinated and sulphated calcium and magnesium facies; a calcium and magnesian bicarbonate facies; and finally a sodium and potassium chloride or sodium sulphate facies. The results of the physico-chemical analysis are for the most part below the drinking water standard defined by the WHO/Chad except the boreholes of “Fezan, the Eglise Cath, and Djougou N” which have concentrations of nitrates above the standard set by WHO/Chad. Indicators of bacteriological pollution were identified in seven boreholes (“Bozonga1, Hydraulique, Lycée A. Zezerty, Hopital, Governorat, Ecole N Inst, STE (Société Tchadienne des Eaux)”).

Key words: Assessment, Chad, Mao, Quaternaire aquifer, physico-chemical and bacteriology.