Pesticide leaching in Danish groundwater: identification of vulnerable areas

Authors

  • Erik Nygaard Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Vibeke Ernstsen Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Carsten S. Jacobsen Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Ole H. Jacobsen Danish Institute of Agricultural Sciences, Blichers Allé, Postbox 50, 8830 Tjele, Denmark
  • René K. Juhler Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Peter van der Keur Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Svend E. Olesen Danish Institute of Agricultural Sciences, Blichers Allé, Postbox 50, 8830 Tjele, Denmark
  • Jim Rasmussen Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Per Rosenberg Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Henrik Vosgerau Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark

DOI:

https://doi.org/10.34194/geusb.v4.4774

Abstract

In Denmark the supply of drinking water is based almost solely on groundwater. During the past few decades Danish groundwater monitoring has encountered numerous instances of pollution with pesticides and their metabolites (GEUS 2003a). As a result, some hundreds of abstraction wells out of about 8000 in general water supply have been closed. With this background, there is a particular concern for reducing the leaching of pesticides into the groundwater. In the present study an approach for identification of areas potentially prone to pesticide leaching is described. The potential risk of leaching of pesticides from agricultural areas into groundwater is minimised through a procedure of approval; however, some leaching still occurs (GEUS 2003b). The Danish counties are therefore obliged to identify areas where there is a particular risk of pesticide leaching, and where restrictions in use of pesticides may be introduced to reduce the risk (Miljøstyrelsen 2000). The Geological Survey of Denmark and Greenland (GEUS) and the Danish Institute of Agricultural Sciences (DJF) have carried out a project, focusing on sandy agricultural areas, that attempts to establish the necessary background knowledge for identifying areas particularly prone to pesticide leaching. The project aims to distinguish vulnerable and less vulnerable areas, both locally and nationwide, in a cost-effective way.

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Published

2004-07-20

How to Cite

Nygaard, E. ., Ernstsen, V. ., Jacobsen, C. S. ., Jacobsen, O. H. ., Juhler, R. K. ., van der Keur, P. ., Olesen, S. E. ., Rasmussen, J. ., Rosenberg, P. ., & Vosgerau, H. . (2004). Pesticide leaching in Danish groundwater: identification of vulnerable areas. GEUS Bulletin, 4, 25–28. https://doi.org/10.34194/geusb.v4.4774

Issue

Section

RESEARCH ARTICLE | SHORT

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