Using GIS to Determine the Potential Use of Groundwater in the Angads Plain (Morocco) for Irrigation and Human Consumption

Groundwater resources are a source for irrigation and human consumption, this work in the context of the determination their quality at the level of the Angads plain which is in the eastern part of the Taourirt-Oujda corridor in Morocco, on a set of nineteen sampling points and nineteen bacteriological and physicochemical parameters. The results of this study show that the TC, FC, and FS parameters largely exceed the standards of the World Health Organization, as well as the Moroccan standards for irrigation and human consumption. In particular at the level of the points located downstream of the station for the purification of polluted water (wastewater treatment plant) and downstream and in the vicinity of the landfill located in Oujda. Thus some physico-chemical parameters, namely NO3−, EC, Cl−, Fe2+, Mn2+, and HCO3−, which exceed these standards, have been found in wells located near the landfill and others downstream from the wastewater treatment plant (WWTP). Faced with these constraints, it is necessary to find adequate solutions to protect this resource against pollution and among the recommendations proposed are the supervision of the use of fertilizers, reduce the use of pesticides in agriculture and purify polluted water before discharge.