Mitterndorfer Senke

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The Mitterndorfer Senke in the Vienna Basin in Lower Austria is one of the largest groundwater resources in Europe.

It runs from the Neunkirchen area and the Steinfeld in the south via Ebreichsdorf , where it reaches its narrowest (2 km) and deepest point, and Mitterndorf to Fischamend in the north. The approximately 40 km long and 8 km wide tectonic rift valley was filled with gravel during the Ice Age and is up to 150 m deep. The age of the gravel deposits is estimated to be around 400,000 years and is therefore younger than the surrounding Vienna basin . The water surface is about 200  m above sea level. A. and is therefore close to ground level in large areas. Most of the water flows through meltwater from the Schneeberg area .

Numerous water supply companies have their pumping stations here. The water supply associations on the Wiener Neustadt, Baden, Mödling thermal baths , the Triestingtaler Wasserleitungsverband or the water association northern Burgenland get their drinking water here. The City of Vienna is also supplementing its water requirements with the third Viennese water pipeline here to cover consumption peaks.

In 1969 an ordinance to protect the groundwater resources in the Mitterndorfer Basin was issued. Time and again, contamination from former landfills and illegal deposits of oil-contaminated soil, household and industrial waste lead to major problems . The best known case is the " Fischer landfill ", which in the 1970s and 1980s led to the contamination of the groundwater in parts of the Mitterndorfer Basin.

Fischer landfill (1989)

In 2010 it was decided to remove the contaminated site N-06 southwest of Wiener Neustadt , which has become known as the "aluminum slag landfill " , where 580,000 m³ of materials are to be treated and disposed of. In July 2013, the environmental impact assessment brought in by Bundesaltlastensanierungsges.mbH (BALSA) was formally terminated, so that the renovation, which was estimated to last 10 years, could now be commissioned. At the beginning of 2017, a consortium of several companies began to clean up the landfill.

Web links

Individual evidence

  1. ↑ Ordinance of the Federal Minister of Agriculture and Forestry of April 11, 1969 for the protection of the groundwater in the Mitterndorfer Senke ris.bka.gv.at, accessed on March 12, 2012.
  2. ↑ ORF.at: Pesticides contaminate Mitterndorfer Senke , April 15, 2010, accessed on July 22, 2013.
  3. ^ Die Presse.com: Accusation: Company contaminates water, land benefits ( Memento from May 11, 2012 in the Internet Archive ), September 12, 2011.
  4. ^ Federal Environment Agency Austria: Description of the contaminated site N6: Aluminum slag landfill , January 1991, accessed on July 22, 2013.
  5. ↑ Magistrate of the City of Wiener Neustadt: ( Page no longer available , search in web archives: EIA for clearing the aluminum slag landfill will be requested at the beginning of October ), press release from September 14, 2011, accessed on July 22, 2013.@1@ 2Template: Toter Link / www.wiener-neustadt.gv.at
  6. ↑ ORF.at: Green light for remediation of contaminated sites , July 22, 2013.
  7. ^ Lower Austria state government: EIA procedure for the aluminum slag landfill in Wiener Neustadt completed , press release , July 22, 2013.
  8. ↑ Renovation of the aluminum slag landfill started. In: Niederösterreichische Nachrichten . January 16, 2017, accessed August 12, 2018 .

Coordinates: 47 ° 59 '  N , 16 ° 28'  E