NVZ compliance made straightforward for UK livestock farms
Nitrogen loading, N movements, dirty water storage, closed periods and audit-ready PDF reports — all in one place. Know you're compliant before the inspector arrives.
Free Tool — No Account Needed
NVZ Whole-Farm Nitrogen Loading Check
Check your whole-farm N loading against the 170 kg/ha limit in under 2 minutes.
What's included in the app
Everything you need to stay NVZ compliant
From the initial loading check to the application record and the audit PDF — the full compliance workflow in one app.
Whole-Farm N Loading Check
Enter your livestock numbers and land area — the app calculates your total organic nitrogen loading and flags any breach of the 170 kg N/ha NVZ limit instantly.
N Movements Recorder
Log every organic and manufactured nitrogen application field by field. The app totals each field automatically and alerts you before you exceed individual field limits.
Dirty Water Storage Calculator
Calculate exactly how much dirty water storage you need based on livestock numbers, housing type and the required storage period for your NVZ closed period.
Closed Period Tracker
Never apply in the wrong closed period. The app tracks application windows for slurry, FYM and manufactured fertilisers across arable and grassland fields.
Compliance PDF Export
Generate a full NVZ compliance report as a professional PDF — complete with N loading calculations, field records and storage balances. Ready for farm assurance audits.
Limit Breach Alerts
The app flags red when any field or whole-farm N figure approaches or exceeds a limit. Catch problems before they become breaches, not after.
170 kg
N/ha NVZ limit tracked automatically
Audit-ready compliance report in one click
14 days
Free trial — full access from day one
Full NVZ compliance workflow
14-day free trial
Know you're NVZ compliant before anyone asks
Start your free trial today. No credit card, no commitment — full access to all NVZ compliance tools from day one.
NVZ Compliance FAQs
NVZ rules apply to farms in designated Nitrate Vulnerable Zones in England. Rules differ in Wales and Scotland. Always check current DEFRA guidance and consult your agronomist or AHDB adviser for farm-specific advice.