Assessment of groundwater quality using Physico-chemical analyses of Sahel-Doukkala region

Water quality preservation represents one of the biggest challenges world is facing nowadays. In Morocco, water decline among significant problems country’s sector. Geographic Information System (GIS) an effective and useful tool for interpreting, evaluating displaying spatial data resources management. order to assess Physico-chemical characteristics groundwater Sahel-Doukkala aquifers, samples were collected from 50 points well distributed in study area, analysed according standard methods, results interpreted using geographic information system technique. There was important variability studied parameters element concentrations (T°, pH, EC, Cl - , Ca 2+ Mg Sr, B Na + ), revealing that aquifers lithology, sea intrusion agriculture methods are main factors influencing nature area.