Use this quick and easy tool to learn about nitrate vulnerable zone regulations and make sure your farming practices meet them.

The nitrate vulnerable zone (NVZ) self assessment tool checks if your farming methods meet NVZ regulations and if you need to make any changes

This tool uses Government Gateway.

Getting help
Contact the Defra Helpline if you have any queries about the nitrate vulnerable zone regulations.

Defra Helpline
onlinehelp@defra.gsi.gov.uk
08459 33 55 77
Monday to Friday, 9am to 5pm

Agents
Sign up as an agent if you want to use the tool for more than one farmer.

Scotland and Wales
If you’re in Scotland, you can use the Nmax calculator and compliance tool.

If you’re in Wales, find out what NVZ tools are available by calling the NVZ Wales helpline.

NVZ Wales helpline
01974 847 000