Phosphate credit schemes
Potential Third Party Phosphate Mitigation Schemes in the Somerset Levels and Moors Catchment Area
There are various phosphate (P) credit schemes currently operating within the river catchment areas of the Somerset Levels and Moors Ramsar Site. The map below shows each of these river catchment areas.
P mitigation must be delivered on a catchment-by-catchment basis i.e. if your proposed development is in the River Brue catchment area, your P mitigation (e.g. credits) must also be in the River Brue catchment area.
Somerset Council has prepared a list of potential P mitigation schemes operating in the River Brue, the River Parrett and the River Tone catchment areas. This can be found at the link below.
This list covers mitigation schemes operated by third parties. Somerset Council also has a council-led P-credit scheme in operation in the River Tone catchment area and more information on this is available Phosphate Credit Scheme page.
Please note the list of mitigation schemes within the link below is not exhaustive, it may not cover all P mitigation schemes in operation across Somerset. Somerset Council is not recommending any particular P mitigation scheme. Nor does the Council ‘accredit’ any particular P mitigation provider. The table simply lists potential schemes known to the Council and with appropriate processes in place with the Council to allow us to progress planning applications linked to these P-credits.
It is the responsibility of the developer/applicant to seek a phosphate mitigation solution to support their planning application as explained in the Nutrient Neutrality: Guide for Applicants, available in the Nutrient Neutrality in Somerset Guidance document. P-credits from third-parties are acquired at the applicant’s own risk.
How are third-party P-credits secured?
Applications intending to use third-party P-credits (from a P-credit provider with an overarching legal agreement with Somerset Council) must detail this within the Nutrient Neutrality Assessment and Mitigation Strategy (NNAMS) and/or shadow Habitats Regulations Assessment (sHRA) submitted with their planning application. Prior to 1 December 2025, a Reservation Notice was required for planning consent to be issued. From 1 December 2025, the Reservation Notice is no longer required.
A pre-commencement condition will be applied to the Decision Notice requiring the submission of an Allocation Certificate from the third-party P-credit provider for the same number of credits as detailed in the NNAMS/sHRA.
For phased, outline planning applications, the pre-commencement condition will require the Allocation Certificate on a phase-by-phase basis. A further pre-commencement condition will be applied requiring the submission of an updated NNAMS/sHRA for each phase, confirming the number of credits required for each phase. For outline applications using multiple types of phosphate mitigation, a bespoke approach may be required. This will be confirmed with the case officer following submission of the planning application.”
If you are a third-party P-mitigation provider
If you are a third-party P-mitigation provider with a potential P-mitigation scheme within the Somerset Levels and Moors catchment area, we recommend early engagement with Somerset Council prior to P-credits be marketed. This is to ensure that appropriate processes are in place to allow the Council to be able to progress planning applications linked to your third-party P-credits.
Please follow the following steps to process an overarching legal agreement with Somerset Council to allow the Local Planning Authority to accept your P-credits as phosphate mitigation.
- Obtain Natural England approval: We require confirmation from Natural England that proposed third-party P-mitigation schemes are acceptable. Please engage with Natural England through their Discretionary Advice Service prior to discussion with Somerset Council.
- Submission of technical details to Somerset Council: Submit a Phosphate Mitigation Statement setting out all of the technical details of your proposed scheme to SES@somerset.gov.uk and phosphates@somerset.gov.uk for the Council’s review. This should include confirmation of Natural England’s approval of the scheme.
- Commencement of legal process: If Somerset Council is able to technically approve the details of a proposed third-party P-mitigation scheme, the required legal process to agree an ‘overarching’ legal agreement to agree the process for P-credit allocation with Somerset Council. Prospective third-party P-mitigation providers must provide Solicitor details to manage this process.
Please note, Somerset Council is also launching a ‘call for sites’ seeking submission of land promoted for the delivery of phosphate mitigation schemes. For more information on this, please see our environmental call for sites page.
If you require any further information please email SES@somerset.gov.uk or phosphates@somerset.gov.uk.