We are selling temporary nitrogen credits in the Poole Harbour catchment area. You can use these credits to mitigate your developments impact up to 2030.

WarningYou can register your interest in the Poole Harbour credits from 8 January 2025 to 8 February 2025

Our catchment areas

We used data and maps from Natural England and Wessex water to create catchment areas maps. You can use these maps to see all the areas where you may need to consider mitigation.

You will need to mitigate in the catchment areas for developments that will: 

  • increase overnight stays, such as homes, hotels and campsites 
  • attract large numbers of people such as tourist attractions 
  • cause significant discharge of wastewater such as industrial processes 
  • increase agricultural activity such as new cattle barns 

You will need to provide mitigation if: 

  • your development is in these catchment areas 
  • wastewater from your development will enter these areas 

Temporary mitigation helps mitigate the short term impact of developments up until 2030. It can be useful where the nutrient impact will vary over time. You may also need permanent mitigation. This will help address the impact of your development over its lifetime.

Before you start

Each whole credit costs £617.

If your budget requires part of a credit, the price will be calculated to the nearest pound based on what you need. For example, 0.5 of a credit will cost £309.

We measure nitrogen in kilograms (kg) of Total Nitrogen (TN) per year (yr) or kg TN/yr for budget calculations.

Before you register your interest, you will need:

For some sewage treatment works, you will also need an agreed nutrient budget in kilograms of total nitrogen per year (kg TN/yr). You may have separate budgets pre-1 April 2030 and post 1 April 2030. Read our guide on temporary nutrient credits for more detail.

Register your interest 

Poole Harbour catchment temporary nitrogen credits

Register your interest

What happens next 

We will process applications February and March 2025 and confirm after that if you have secured the credits.

Once you have registered your interest, we will:  

  • send you a confirmation email
  • review your proposal 
  • check your nutrient budget 
  • confirm if have successfully secured the credits (after applications are processed in February and March)
  • complete the sale and take payment

Available credits from other organisations 

There are nitrogen credit schemes available in other catchment areas. We are not a part of these schemes so you will need to contact the organisation running them:  

No credits 

There are currently no credits available in these catchment areas: 

We may have nutrient credit schemes become available in the future. Subscribe with us if you would like to be told when other schemes become available.