Assessment of Surface Water Quality Using Water Quality Index and Discriminant Analysis Method

Author:

Mammeri Asma1,Tiri Ammar1ORCID,Belkhiri Lazhar1,Salhi Hichem1,Brella Djouhaina1,Lakouas Elhadj1,Tahraoui Hichem2ORCID,Amrane Abdeltif3ORCID,Mouni Lotfi4ORCID

Affiliation:

1. Laboratoire de Recherche Appliquée en Hydraulique, Université Mostafa Ben Boulaid Batna2, Batna 5000, Algeria

2. Laboratory of Biomaterials and Transport Phenomena, University of Medea, Medea 26000, Algeria

3. Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR–UMR6226, Université Rennes, F-35000 Rennes, France

4. Laboratoire de Gestion et de Valorisation des Ressoreces et Assurance Qualité, Faculté de la Nature et de vie et Sciences de la Terre, Université de Bouira, Bouira 10000, Algeria

Abstract

Given the complexity of water quality data sets, water resources pose a significant problem for global public order in terms of water quality protection and management. In this study, surface water quality for drinking and irrigation purposes was evaluated by calculating the Water Quality Index (WQI) and Irrigation Water Quality Index (IWQI) based on nine hydrochemical parameters. The discriminant analysis (DA) method was used to identify the variables that are most responsible for spatial differentiation. The results indicate that the surface water quality for drinking is of poor and very poor quality according to the WQI values, however, the IWQI values indicate that the water is acceptable for irrigation with restrictions for salinity sensitive plants. The discriminate analysis method identified pH, potassium, chloride, sulfate, and bicarbonate as the significant parameters that discriminate between the different stations and contribute to spatial variation of the surface water quality. The findings of this study provide valuable information for decision-makers to address the important problem of water quality management and protection.

Publisher

MDPI AG

Subject

Water Science and Technology,Aquatic Science,Geography, Planning and Development,Biochemistry

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