Identification of Groundwater Quality of Alluvium Zone Using Geoelectric Method of Schlumberger Configuration in Merauke City Area

Clean water is needed for our daily activities such as drinking, cooking, bathing, washing, latrines, etc.Therefore, the provision of clean water is essential because it directly affects the regularity of human activity.Merauke city which is located at an altitude of3-4 above sea level, composed by the youngest rocks aged Miocene. This condition possesses a risk that tides may intrude seawater to the land or intrusion, and this event would cause the impact of a clean water crisis.Based on the importance of clean water, the research was conducted in Merauke District of Merauke Regency.The research used geoelectric resistivity method of Schlumberger configuration type which is aimed to identify groundwater quality in alluvium zone with the youngest rock of Miocene age.The results of data processing show that there are two types of groundwaterin the study area, namely free groundwater and distressed groundwater. The resistivity of distressed groundwater type is 0.0772 ohm m which can be found at a depth of 51.1 meters, water with this type of resistance is indicated as polluted or brackish water.Meanwhile, free groundwater is located at a depth of 11.2 meters with a resistance type of 2.78 ohm m is also categorized as brackish water.