Nutrient Neutrality
Alongside all other local planning authorities in Norfolk, the Broads Authority received a letter in 2022 from Natural England concerning nutrient pollution in the protected habitats of the Broads Special Area of Conservation and Ramsar site.
The letter advised that new development within the catchment of these habitats comprising overnight accommodation has the potential to cause adverse impacts with regard to nutrient pollution. Such development includes, but is not limited to:
- new homes,
- student accommodation,
- care homes,
- tourism attractions,
- tourist accommodation,
- permitted development (which gives rise to new overnight accommodation) under the Town and Country Planning (General Permitted Development) (England) Order 2015, and
- Any development not involving overnight accommodation, but which may have non-sewerage water quality implications.
The Conservation of Species and Habitats Regulations 2017 require local planning authorities to ensure that new development does not cause adverse impacts to the integrity of protected habitats such as the Broads prior to granting planning permission. At present there are no identified mitigation solutions available locally to resolve these impacts.
Whilst the Authority assesses the implications of these matters, it cannot lawfully conclude that development within the catchment of the Broads Special Area of Conservation and Ramsar site will not have an adverse effect. Therefore, until these matters are resolved the Authority will not be able to grant planning permission for developments comprising overnight accommodation within the affected catchments.
Downloads and links
- Norfolk nutrient calculator training video - this YouTube video is designed to help those who need to use the Norfolk Calculator.
- River Wensum SAC and Broads SAC Nutrient Budget Calculator - Updated May 2024 (XLSX) - This calculator is based on the Natural England calculator, but some parts have been updated to reflect Norfolk. There is an accompanying technical report (see below) that provides more information.
- Norfolk Nutrient Budget Calculator Technical Report (PDF) - The Norfolk nutrient budget calculator is a regional specific tool designed to rapidly calculate the nutrient loading from new residential development in the catchments of the River Wensum SAC and the Broads SAC. This report presents the methods, principles and key assumptions on which the calculator is based. Natural England have responded to the potential to use this Norfolk Calculator and the response is below.
- Natural England Norfolk Nutrient Calculator Response (PDF)
- Catchment Map (PDF)
- Nutrients Catchment Map (PDF)
- Bure Nutrients Catchment Map (PDF)
- Wensum Nutrients Catchment Map (PDF)
- Nutrient Neutrality Frequently Asked Questions (PDF)
- Report: Small scale discharges of phophorous: Low risk mapping (PDF) - The guidance relates to small discharges from Package Treatment Plants (PTPs) and Septic Tanks (STs) and it states that where all of the requirements of pre-defined conditions are met, a PTP / ST will not have a likely significant effect on the designated site from phosphorus.
- Small Scale Discharge Low Risk Zone Map
- Royal Haskoning Final Norfolk Nutrient Strategy Nutrient Mitigation Solutions Report - This report sets out suitable short, medium, and long-term mitigation options that could potentially be used to offset the additional nutrient load from a new development within the catchment of the River Wensum Special Areas of Conservation and/ or The Broads Special Areas of Conservation, including potential strategic options to manage nutrient inputs and allow further residential development to proceed.
Previous updates
November 2022
We are finalising a Norfolk Nutrient calculator as well as improved mapping.
If you wish to find out more about Nutrient Neutrality or think it applies to your scheme, please contact the Development Management Team on 01603 610734
Alongside all other local planning authorities in Norfolk, the Broads Authority has received a letter dated 16 March 2022 from Natural England concerning nutrient pollution in the protected habitats of the Broads Special Area of Conservation and Ramsar site. The letter advised that new development within the catchment of these habitats comprising overnight accommodation has the potential to cause adverse impacts with regard to nutrient pollution. Such development includes, but is not limited to:
- new homes,
- student accommodation,
- care homes,
- tourism attractions,
- tourist accommodation,
- permitted development (which gives rise to new overnight accommodation) under the Town and Country Planning (General Permitted Development) (England) Order 2015, and
- Any development not involving overnight accommodation, but which may have non-sewerage water quality implications.
The Conservation of Species and Habitats Regulations 2017 require local planning authorities to ensure that new development does not cause adverse impacts to the integrity of protected habitats such as the Broads prior to granting planning permission. At present there are no identified mitigation solutions available locally to resolve these impacts.
Whilst the Authority assesses the implications of these matters, it cannot lawfully conclude that development within the catchment of the Broads Special Area of Conservation and Ramsar site will not have an adverse effect. Therefore, until these matters are resolved the Authority will not be able to grant planning permission for developments comprising overnight accommodation within the affected catchments.
The Authority will be working closely with its neighbouring authorities and Natural England to better understand the implications and identifying possible options for mitigation to ensure sustainable development can proceed. Unfortunately, at present it is not possible to state how long this may take to resolve. However, the Authority will keep this webpage up to date with more information as it arises.
- Natural England Water Quality and Nutrient Neutrality Advice dated 16 March 2022 (PDF)
- The Broads SAC Catchment Area Map (PDF)
Working with the other Norfolk LPAs, we have also produced some Frequently Asked Questions (PDF).
July 2022
In July, the Government issued further information about Nutrient Neutrality and steps to be taken to assist with the delivery of mitigation schemes to help enable development to proceed. Mitigation schemes within the affected areas will be necessary to enable further development such as housing growth to be permitted.
A Written Ministerial Statement made by George Eustice (Secretary of State for Environment, Food and Rural Affairs) was issued on 20 July 2022
This sets out that the government will:
- Place a legal duty on water companies to upgrade wastewater treatment works by 2030 in nutrient neutrality areas
- Require Natural England to establish and deliver a Nutrient Mitigation Scheme
The government advice was followed by a letter about nutrient neutrality and habitats regulations assessment from Joanna Averley (Chief Planner) issued 21 July 2022.
The Norfolk Authorities are working together to ensure consistency of approach on Nutrient Neutrality. The contents of the Written Ministerial Statement and Chief Planner letter are therefore being considered carefully to establish whether this provides a basis for enabling permissions to be issued now with conditions/restrictions or, whether there is a need to wait until there is better understanding of mitigation schemes to be delivered by Natural England and confirmation that those schemes are deliverable. Further updates will be provided once clarity has been established.
In relation to the use of Natural England Nutrient Calculators and the Habitats Regulations process, the Court of Appeal decision in R (Wyatt) v Fareham BC & Natural England was issued on 15 July 2022. Thisconfirms that Local Planning Authorities can rely on the guidance of Natural England via their nutrient calculator tools. However, these are not the only tools that can be used when calculating nutrient loading, they are merely one way of carrying out an “appropriate assessment” and their use is not therefore mandatory. However, the Court of Appeal decision suggests that a planning authority ought to follow the methodology suggested by the statutory nature conservation body unless it has good reason not to do so.
Royal Haskoning are continuing with their work on behalf of the Norfolk Authorities which includes the development of a bespoke nutrient calculator for the Norfolk catchments. They are also exploring the identification of mitigation solutions for the short, medium, and long term.
Further updates on the progress of the work of Royal Haskoning will be provided by the Norfolk Authorities.