Nitrate in surface water

  • Decrease in average nitrate concentration of recent years now stagnating

    The average nitrate concentration in surface water in agricultural areas improved between 2005-2006 and 2013-2014, but has since stagnated.

  • Stop in decrease of number of monitoring stations where threshold value is exceeded

    The share of monitoring stations exceeding the threshold value decreased between 2005-2006 and 2013-2014. Here again, there has been no improvement since then. In the 2016-2017 winter year, nearly 21% of the monitoring stations exceeded the threshold value. 


Environmental report (MIRA), Flanders Environment Agency (VMM): Nitrate in surface water 


Winter year: a winter year runs from 1 July of a calendar year to 30 June of the following calendar year. 

Publication date

19 December 2018

Next update

December 2019

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