Examining the additional nitrate loading limits being granted to farms in Nutrient Vulnerable Zones

Responses we received from a Freedom of Information (FOI) exercise have revealed that, in Nitrate Vulnerable Zones (NVZs), farmers have secured additional nitrogen allowance in the last year which equates to the nitrogen production of the occupants of 603,000 homes.

In Nitrate Vulnerable Zones (NVZs) farmers can apply up to 170kg per hectare of nitrogen in livestock manure to their land. Each year farmers can apply to the Environment Agency for a derogation from environmental regulations.

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These applications can grant farmers up to 250kg of nitrogen per hectare. This is while Natural England’s moratorium on home building remains and has persisted since June 2019.

The ban on new builds is an attempt to address high phosphate and nitrate levels in rivers and has spread to over a quarter of England’s local authority areas, affecting more than 160,000 homes.

1.1 million kgs

of additional nitrogen has been granted to farms in 2023. That's an additional 22%.

603,000 homes

could be occupied with the same allowance of nitrogen as last year's additional nitrogen allowance.

Just one quarter

of the nitrogen allowance awarded to farmers in 2023 would free up the 155,000 homes currently blocked by nutrient neutrality.

How many derogations are granted each year?

In response to HBF’s Freedom of Information request, the Environment Agency has provided details of the derogations (exemptions) granted to farmers during 2023.

In total, 190 exemptions were granted in 2023. The successful applicants already had a combined Nitrogen allowance of just under 5 million kilogrammes of nitrogen per year. The exemptions to these 190 farms increased the legal limits for nitrogen spreading by more than 1.1 million kgs (an additional 22%).

In the six years to 2023, the Environment Agency received 1,394 applications for derogations. The success rate for these applications was 98.6%, with 1,374 granted.

On average, over the five year period 2018-22, successful applicants to the scheme received an additional allowance equivalent to an extra 22% (38kg Nitrogen per hectare) on top of the 170kg per hectare per year limit that otherwise applies in NVZs.

If homes were afforded just one quarter of the annual nitrogen production afforded to farmers through derogations granted in 2023, all 160,000 new homes blocked by nutrient neutrality could be built.

How to the exemptions equate to home building?

Occupants of new homes account for just 0.3% of nitrogen emissions each year.

A sheep produces the same nutrients as the occupants of 3 new houses.

One dairy cow produces the same nutrients as the occupants of 29 new houses.

Agricultural activities are responsible for 70% of nitrogen pollution.

It is estimated that around 160,000 new homes remain blocked in the planning process due to Natural England’s interpretation of EU law and the imposition of nutrient neutrality requirements.

We can estimate that just the additional nitrogen use approved through last year’s derogation process represents the equivalent nitrogen production of the occupants of 603,000 homes.

The total potential annual nitrogen production from the residents of 160,000 new homes would equate to less than one quarter of the amount afforded to farmers through the derogations granted in 2023.

Exemptions granted by region

Home building in the North West, West Midlands and South West has been significantly impacted over the past five years by nutrient neutrality measures imposed to prevent nitrate and phosphate pollution of rivers, despite the evidence pointing to home building making no impact and new home occupancy presenting a negligible potential impact.

The results of the Freedom of Information request show that three regions account for more than 90% of all successful applications to EA for derogations in England over the past five years.

Over the past five years, 49% of derogations granted in Nitrate Vulnerable Zones were located in the North West. The Midlands accounted for 32% of derogations granted and the South West saw 211 successful applications, 15% of the total granted between 2018 and 2023.

Although the Environment Agency has this time grouped the East and West Midlands as one region, previous years’ results show that the West Midlands accounted for around five times the number of applications as the East Midlands.

In most regions the success rate for applications stands at more than 95%. EA has not refused an application for a derogation in the South East or East of England, though it should be noted that these are areas where few applications are made.

In the North West and Midlands, seven of the 1,127 applications received between 2018 and 2023 have been refused.

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