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On the scope and management of pesticide pollution of Swedish groundwater resources: The Scanian example

Författare:
  • Maria Åkesson
  • Charlotte Sparrenbom
  • Peter Dahlqvist
  • Stephen Fraser
Publiceringsår: 2015
Språk: Engelska
Sidor: 226-238
Publikation/Tidskrift/Serie: Ambio
Volym: 44
Nummer: 3
Dokumenttyp: Artikel i tidskrift
Förlag: Springer

Abstract english

Twenty-three south-Swedish public supply wells were studied to assess pesticide pollution of regional groundwater resources. Relations between pesticide occurrence, hydrogeology, and land use were analyzed using Kohonen's Self-Organizing Maps approach. Pesticides are demonstrated to be substantially present in regional groundwater, with detections in 18 wells. Concentrations above the drinking water threshold are confirmed for nine wells. Observations indicate considerable urban influence, and lagged effects of past, less restricted use. Modern, oxic waters from shallow, unconfined, unconsolidated or fracture-type bedrock aquifers appear particularly vulnerable. Least affected waters appear primarily associated with deeper wells, anoxic conditions, and more confined sediment aquifers lacking urban influence. Comprehensive, standardized monitoring of pesticides in groundwater need to be implemented nationwide to enable sound assessments of pollution status and trends, and to develop sound groundwater management plans in accordance with the Water Framework Directive. Further, existing water protection areas and associated regulations need to be reassessed.

Keywords

  • Geology

Other

Published
  • ISSN: 0044-7447
Charlotte Sparrenbom
E-post: charlotte.sparrenbom [at] geol.lu.se

Universitetslektor

Kvartärgeologi

+46 46 222 39 54

+46 72 222 52 66

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