Assessment of the quality of well water in the spatial terraces of river code in Yogyakarta Indonesia

Abstract

Many residents live on the banks of the Yogyakarta Code River. Some of them are still there who dispose of liquid waste directly into the river so that it has the potential to pollute the environment. Pollution also occurs in population wells. In general the condition of the riverbank is terraced, so that liquid waste originating from terrace 1 (the top) will flow to terrace 2 (the middle part), then flow to terrace 3 (bottom), and finally enter the river. The purpose of this study was to assess the quality of well water on the banks of the River Code, based on DO parameters, pH, DHL, Temperature, TDS, and E-Coli bacteria and to ascertain whether there was a direct correlation of pollution accumulation from high elevation to low elevation. The methods used include: identification of wells, measurement of the position of the well with GPS, plotting the location of wells to maps, sampling of well water, analyzing the quality of well water in the laboratory, and assessing the spatial water pollution of the well. Based on the results of the study, it can be concluded that there is a decrease in the quality of well water from high elevation to low elevation so that the quality of well water at low elevations is worse than the quality of well water at higher elevations. So that there is a direct correlation of accumulated pollution from well water at high elevations to lower elevations in the terraces of the Code River banks.