NDLI: The origin and distribution of nitrate in groundwater from village wells in Kotagede, Yogyakarta, Indonesia

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Hydrogeologic and hydrochemical framework of the shallow groundwater system in the southern Voltaian Sedimentary Basin of Ghana. Reply to comments by Pradeep Raj

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The origin and distribution of nitrate in groundwater from village wells in Kotagede, Yogyakarta, Indonesia

Content Provider	Springer Nature Link
Author	Smith, Geoffrey D. Wetselaar, Robbert Fox, James J. van de Graaff, Robert H. M. Moeljohardjo, Doeljachman Sarwo, Joko Asj'ari, Sri Rahajoe Tjojudo, Suharto
Copyright Year	1999
Abstract	The causes and nature of nitrate pollution of wells in a village within Kotagede, a subdistrict of the city of Yogyakarta, Indonesia, were investigated in a detailed hydrological study. Nitrate concentrations in groundwater frequently exceeded the WHO recommended limit of 50 mg L − 1. Groundwater nitrate concentrations were measured over a 19-month period in monitoring wells and in piezometers placed strategically in relation to sewage tanks within the village. Results indicate that the tanks are major sources of nitrate in the groundwater and that the input is markedly dependent on rainfall, resulting in a surge of nitrate into the groundwater at the beginning of each wet season. That the tanks are a major source was confirmed by measuring nitrate in soil cores obtained by augering close to selected tanks. Washrooms, where people wash themselves, are not significant sources of nitrate. Faecal coliform counts in groundwater from a random selection of wells are very high. The results have implications for the siting of wells and toilets within villages in Indonesia.Les causes et la nature de la pollution par les nitrates de puits d'un village de Kotagede, un sous-district de la ville de Yogyakarta (Indonésie), ont été analysées à l'occasion d'une étude hydrologique détaillée. Les concentrations en nitrates des eaux souterraines ont été mesurées pendant une période de 19 mois dans des puits de contrôle et dans des piézomètres situés stratégiquement par rapport à des réservoirs d'eaux usées du village. Les résultats indiquent que les réservoirs constituent la source essentielle de nitrates dans les eaux souterraines et que l'entrée est nettement liée à la pluie, responsable de l'introduction de nitrates dans les eaux souterraines au début de chaque saison humide. Le fait que les réservoirs soient la source essentielle a été confirmé par des mesures de nitrates dans les sols réalisées sur des carottes prélevées près de réservoirs sélectionnés. Les salles d'eau ne constituent pas une source significative de nitrates. Les teneurs en coliformes fécaux des eaux souterraines de puits sélectionnés au hasard sont très élevées. Ces résultats ont des implications en matière de localisation de puits et de toilettes dans les villages d'Indonésie.
Starting Page	576
Ending Page	589
Page Count	14
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	7
Issue Number	6
e-ISSN	14350157
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-10-01
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Geology Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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Optimal pumping from skimming wells from the Yamuna River flood plain in north India

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