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State level Country / municipal
position Corporation under public law
Supervisory authority Ministry for the Environment, Nature Conservation, Agriculture and Consumer Protection of the State of North Rhine-Westphalia
founding July 22, 1927
Headquarters Viersen , North Rhine-Westphalia
Authority management Dietmar KW Schitthelm, board member
Servants 400
Web presence
Metal plaque on the banks of the Niers between Viersen and Mönchengladbach

The Niersverband is a public corporation with its seat in Viersen .

The area of ​​the association is the above-ground catchment area of the Niers and the Niers Canal in Germany . Members of the association are the 31 cities and municipalities, six districts and 323 larger companies in the association area.

The members manage the association themselves. Legal supervision lies with the North Rhine-Westphalian Ministry for the Environment, Nature Conservation, Agriculture and Consumer Protection .


The Niersverband has the following main tasks on the Niers and in the Niersverband area:

  • Maintenance of waters
  • Renaturation of waters
  • Flood protection
  • Treatment of rainwater
  • Treatment of all wastewater occurring in the association area
  • Disposal of the waste that arises when performing the task

The association can also take on tasks outside of the association's territory on a voluntary basis.

275 employees perform these tasks. To this end, they operate 24 sewage treatment plants and treatment plants , 22 pumping stations , 34 rain overflow basins , 15  rain retention basins , 17 dams and 18 gauges . The balance sheet total is 241.4 million euros, of which 15.3 million are personnel expenses (2002). The activities are mainly financed from membership fees.


The Niersverband was founded by Prussian law of July 22, 1927 with the aim of regulating water runoff, limiting or avoiding frequent floods, and purifying wastewater in the association area . At that time, the Niersverband area belonged to the Rhine Province of Prussia . The model for the establishment of the Niersverband was the Emschergenossenschaft , which existed since 1904. The Ruhrverband and the LINEG drainage cooperative on the left bank of the Rhine were also founded based on this model, as well as the Lippeverband in 1925 and later the Wupperverband (1930).

With the Niers Association Act (NiersG) of December 15, 1992, the state of North Rhine-Westphalia reformulated the legal basis of the association. The tasks of the Nierverband were specified and expanded to include the management of groundwater and the renaturation of water bodies. In addition, self-administration was reorganized.


The Niersverband is a self-governing body under public law . It represents the interests of its members within the framework of the legal requirements. Organs of the Niersverband are

  • the association assembly
  • the association council
  • the board

The members send the delegates elected by electoral groups to the association assembly, which meets at least once a year. The elected delegates are complemented by members of the Chamber of Agriculture.

The association council has the function of a supervisory body. It consists of 15 members. Five of these members are employee representatives.

The board takes care of the day-to-day administration and is the legal representative of the association.

facts and figures

  • Population in the association area: 735,000 (2002)
    • of which connected to sewage treatment plants: 730,000
    • Connection degree: 99%
  • Area of ​​the association area: 1,348 km²
    • Population density: 554 inhabitants / km²
  • Mean precipitation (1950–2006): 714 mm / year
  • mean flow rate in the Niers: 7.8 m³ / s
  • Length of the Niers - total: 112 km, of which
    • in Germany: 104 km
    • in the Netherlands 8 km
    • Greatly changed by expansion: 99 km
    • renatured again (2003): 4 km
  • Total wastewater volume in 2002: 83 million m³
    • Affiliated population equivalents (PE): 1.1 million
  • Waste from wastewater treatment: approx. 100,000 t / year, of which
    • Sewage sludge (18,000 t dry matter): 90,000 t
    • Screenings 2,500 t
    • Sand traps 2,500 t
    • Other 5,000 t

Members of the Niers Association


The Niersverband records the consequences of global warming . There are more local heavy rain events than before. With a permitted 2.8 milligrams of nitrogen per liter of water, a concentration of six to seven milligrams per liter was measured in the Niers in 2016. The nitrate problem persists; Phosphorus and drug residues are also in the water. In the large Mönchengladbach-Neuwerk sewage treatment plant, investments totaling 184 million euros are planned until 2035.

Web links


  1. ^ Rheinische Post online December 30, 2016: Niersverband increases the contributions