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Increasing population density affects clean water reserves in Surakarta City. Free groundwater reserves in 2015 during the transition season in Solo is merely 1.34 billion L, whereas the amount of confined groundwater at the same time is up to 21 billion L. Solo population’s water requirement, however, is 51 million L/day or 18.62 billion L/year; therefore, it is predicted that well water crisis will occur in 2020. Population growth rate and the emergence of other supporting facilities in Surakarta result in a rapid change in agricultural lands into housing and industrial areas. The land utilization conversion becomes one of groundwater pollution sources and contributes to the entry of pollutants into the groundwater. This research aims to find out free groundwater vulnerability level to pollution and distribution of each DRASTIC parameter as well as land utilization for Surakarta City territories. The research is conducted using weighting method and parameter appraisal consists of DRASTIC parameters as main parameters and land utilization as development parameter. According to data obtained, the overall free groundwater in Surakarta territories indicates a high vulnerability level to pollution. Factors that are estimated to influencing the high level of the vulnerability include: soil texture that is dominated by loam, sand, and gravel, and land utilization.

Analysis of free groundwater vulnerability level to pollution using “DRASTIC METHOD” development in surakarta city