LEVEL OF CONTAMINATION BY TRACE METALS IN GROUNDWATER IN THE AGRICULTURAL AREA OF EL GANZRA PROVINCE OF KHÉMISSET, MOROCCO

The population of the agricultural zone El Ganzra supplies water for various uses (drink, irrigation, brevetage…) primarily groundwaters (wells) since the majority of the inhabitants do not have drinking water adduction yet nor of cleansing of waste waters , from where importance of this study which aims to determine the quality of this water by the follow-up of the metal elements traces (Cd, Cr, Cu, Zn, Al) . The analysis of the ETM in these groundwaters shows an absence of contamination of this water by these elements, except for Copper on the level of the well P5 and the presence of a possible impact of agriculture indicates on the quality of this water. However, the value of 251 ?g/l raised for Aluminium on the level of the P12 exceeding the allowed value by the Moroccan standards, let think of a possibility of local contamination by the deep layers of the area and opens the voice with a future investigation for better determining this presence.