EVALUATION OF THE METALLIC CONTAMINATION (MANGANESE, LEAD, CADMIUM, ARSENIC AND MERCURY) OF THE WATERS OF THE NOUBAGHIYA BRACKISH WATER DESALINATION UNIT IN MAURITANIA

In the commune of Noubaghiya, characterized by agricultural potential, the feed waters of the reverse osmosis brackish water desalination unit of this village are subject to several possibilities of contamination.In this municipality, desalinated water is an important source of drinking waterThe objective of this work is to evaluate the metallic quality of the waters of the Noubaghiya unit in Mauritania (manganese, lead, cadmium, arsenic and mercury) with reference to the standards of potability.The results obtained (during the month of December of the year 2012) showed that at the level of the station of the water of rejection (ER), the contents in Pb and Cd exceed the norms. While at the level of the station produced water (EP) Mn, Pb, Cd, As and Hg contents are below the standards.However, at the feed water station (EA), the Pb levels exceed the value set by the standards.At the end of this evaluation, it can be concluded that the use of the drinking water of this municipality without prior treatment can constitute a health risk for the population.