Physicochemical Characterization and Assessment of Magnitude of Pollution to Contribute to Water Sustainability

Ougrad Ihsane, Elassassi Zahra, Rezouki Sanae, Elbouch Mohammed, Mohammed Bourhia, Gomaa A. M. Ali, Lahcen Ouahmane, Ahmad M. Salamatullah, Mourad A. M. Aboul-Soud, John P. Giesy and Fadli Mohamed
Additional contact information
Ougrad Ihsane: Laboratory of Plant, Animal and Agro-Industry Productions, Faculty of Sciences, Ibn Tofail University, Kenitra 14000, Morocco
Elassassi Zahra: Organic Chemistry, Catalysis, and Environment, Department of Chemistry, Faculty of Science, Ibn Tofail University, Kenitra 14000, Morocco
Rezouki Sanae: Organic Chemistry, Catalysis, and Environment, Department of Chemistry, Faculty of Science, Ibn Tofail University, Kenitra 14000, Morocco
Elbouch Mohammed: National Laboratory of Studies and Monitoring of Pollution, Rabat 10112, Morocco
Mohammed Bourhia: Laboratory of Microbial Biotechnology, Agro-Sciences and Environment (BioMAgE), Cadi Ayyad University, Marrakesh 40000, Morocco
Gomaa A. M. Ali: Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
Lahcen Ouahmane: Laboratory of Microbial Biotechnology, Agro-Sciences and Environment (BioMAgE), Cadi Ayyad University, Marrakesh 40000, Morocco
Ahmad M. Salamatullah: Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
Mourad A. M. Aboul-Soud: Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia
John P. Giesy: Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N 5B3, Canada
Fadli Mohamed: Laboratory of Plant, Animal and Agro-Industry Productions, Faculty of Sciences, Ibn Tofail University, Kenitra 14000, Morocco

Sustainability, 2022, vol. 14, issue 11, 1-16

Abstract: As in many countries worldwide, deterioration of quality of water in Morocco’s natural reserves continues, such that an inventory of qualities of these reserves has become necessary. Based on statistical analyses of the data collected by measuring nineteen physicochemical variables, and applying an index, the comprehensive pollution index, to those data, the quality of the waters of Lake Dayat Roumi, Morocco, were assessed. Waters of the lake are currently characterized by a salinity of 921.7 mg Cl − /L and 124.2 mg sulfates/L. The concentration of chloride exceeds the value indicated in the standard norms. This can affect the composition of the sediment, overlying water, and specific composition of biota in the lake. Status and trends of values of other parameters also indicate deterioration of water quality in this lake. Multivariate statistical analysis made it possible to differentiate four clusters of samples according to their physicochemical characteristics. These groups are due to inputs from three sources of materials: leaching of rocks from the watershed and plantations, discharge of domestic wastewater and runoff water. Samples taken from deeper parts of the lake indicate a depression of concentrations of dissolved oxygen during the hot season. The analysis results demonstrate the heterogeneous degradation of the water quality in the peripheral areas and deep parts of the lake, favored by the leaching of soils by rainwater, which, when sufficiently severe, can cause repeated mortalities of fishes. This situation requires regular water quality monitoring to develop a management plan for restoration of water quality in the lake to preserve valued ecological services.

Keywords: water; pollution; Lake Dayat Roumi; sustainability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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