An online map is available on the Government website (, showing areas of the UK land mass which fall into Nitrate Vulnerable Zones.


The areas shown on the NVZ maps change every 4 years depending on where the high risk areas are deemed to be.


It is also necessary for farmers to create maps showing which areas of their farm are high, medium and low risk for spreading of either organic or artificial fertilisers.


These NVZ maps are usually colour coded based on a “traffic light” system, and will be required during cross compliance and farm assurance inspections. 



4R Reassurance create and produce NVZ maps for our clients.