Hydrochemical Analysis and Evaluation of Groundwater Quality in Ouazi Basin (Essaouira, Morocco)

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Publication Details

Output type: Book

UM6P affiliated Publication?: Yes

Author list: Bahir M., El Mountassir O., Ouazar D., Carreira P.M.

Publisher: Springer Nature

Publication year: 2021

URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85103547398&origin=inward

Languages: English (EN-GB)

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Groundwater plays a dominant role in arid and semi-arid regions; it is among the most available water resources in Essaouira basin, where groundwater is the most important source of water supply. The aim of the study is to assess water quality with respect to agriculture and drinking for a better management of groundwater resources. To achieve such objectives, water analysis was carried out on 50 groundwater samples. The Piper plot reveals that the facies characterizing Ouazi basin was a combination of Ca-Mg-Cl type, Mg-Ca-HCO3 type, SO4-Ca-Mg and Na-Cl water type. The sustainability of groundwater for drinking and irrigation was assessed based on the World Health Organization (WHO), Wilcox and Richards’s diagrams. The obtained results show that the consumption of groundwater in the study area requires a treatment before use as drinking water and most of the groundwater samples fall in C3S1–C4S1 indicating very high salinity and high to low sodium alkalinity hazard. Thus, groundwater quality is ranging between good to permissible and doubtful to unsuitable for irrigation uses under normal condition, and further action for salinity control is required in remediating such problem. The groundwater remains suitable for plants supporting high salinity.


Essaouira, Groundwater quality, Irrigation, WHO, Wilcox


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Last updated on 2021-26-11 at 23:16