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All Journal Indonesian Journal of Geography
Afid Nurkholis
Watershed Modeling Research Group, Faculty of Geography, Universitas Gadjah Mada
Earth & Planetary Sciences

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Distribution of Nitrate Household Waste and Groundwater Flow Direction around Code River, Yogyakarta, Indonesia Muryanto Muryanto; Suntoro Suntoro; Totok Gunawan; Prabang Setyono; Afid Nurkholis; Nurisa Fajri Wijayanti
Indonesian Journal of Geography Vol 51, No 1 (2019): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2052.8 KB) | DOI: 10.22146/ijg.43420

Abstract

The nitrate concentrations in shallow groundwater of the Yogyakarta City and its surroundings has increased to about twenty times in the period 1985-2018. The objective of this study was to analyse the distribution of nitrate concentrations in water well around the Code River, Yogyakarta. Flownets mapping was performed to find out the distribution and direction of potential groundwater pollution. Nitrate concentration was analysed by taking 18 groundwater samples scattered in the upstream, midstream and downstream areas of the Code River. The results of this study indicate that nitrate concentrations in the water well of upstream and downstream areas could still be used as a source of drinking water and recreation-irrigation-livestock. Meanwhile, the nitrate concentration in water well of the midstream area of the Code River, Yogyakarta City, mostly (80% of the sample) did not meet all classes of water quality standards. Human activities in the densely populated settlements were the main factors that influence nitrate pollution. Furthermore, groundwater flow in the study area leads from north to south and towards the Code River. This condition indicates that the nitrate concentrations in  the groundwater can be a source of a pollutant for the Code River.
Co-Authors Muryanto Muryanto Nurisa Fajri Wijayanti Prabang Setyono Suntoro Suntoro Totok Gunawan