Diffuse pollution risk assessment and Diffuse pollution steading assessment

This is an old version of the page

Date published: 15 December, 2021

Date superseded: 26 January, 2023

For recent changes to this guidance, please see the bottom of the page.

Note: This page is not applicable for the 2021 round

The purpose of this is to carry out a basic assessment of the diffuse pollution risks that may be present on your holding.

This is required for all applications, except where you are only applying for Organic Farming, Upland HIA for deer management or Improving Public Access.

This will help to identify the options or actions that may be appropriate to help deal with these risks and where they should be located to maximise their effectiveness.

When assessing diffuse pollution risks it is important to consider whether diffuse pollution is actually occurring or whether there is a real risk of pollution occurring. In order to asses this; it is useful to think along the lines of the Source - Pathway -Receptor approach, as follows:

  • 1. Has a SOURCE of diffuse pollution been identified? Examples include dirty yard areas, eroded areas at gates etc.

  • 2. Is there a clearly identified PATHWAY for transporting the potential pollutants from the source to a watercourse? Examples include an open drain/ gulley at a steading which drains to a watercourse or direct run-off from the source area such as a hardstanding and/or track to a watercourse.

  • NOTE: lightly contaminated run-off which currently discharges onto grassed areas, with no direct run-off to a watercourse, is not generally considered to be a water pollution risk, even if there are underground field drains present.

  • 3. Is there a RECEPTOR (receiving water). If no receptor has been identified then there is no real pollution risk. (NB. in some cases the receiving water may be outside the farm boundary, however if there is a connection (via drain or ditch etc) a pollution risk may still exist).

A water pollution risk only occurs if all 3 of the above can be identified.

Where SEPA has carried out a farm visit, have they identified a diffuse pollution problem or risk at the steading and/ or out in the fields? There should be a letter from SEPA with a map/ plan identifying the pollution issues found. This could be used as a basis to create your own diffuse pollution assessment for the whole farm.