Land contamination: technical guidance
Technical guidance on the management of contaminated land including how to investigate, assess and manage the risks.
Risk management
Risk assessment: the water environment
You can use the ‘ConSim’ tool to assess the risk that’s posed to groundwater by leaching contaminants. Get the ConSim software.
Risk assessment: human health
Find out about category 4 screening levels (C4SL) in Defra’s research project Development of Category 4 Screening Levels for assessment of land affected by contamination - SP1010.
Land contamination reports
Summaries of Defra reports and surveys measuring land contamination.
Site characterisation: field and laboratory analysis
See soil monitoring for the quality requirements for chemical test data.
Updates to this page
Last updated 11 February 2022 + show all updates
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Added Land contamination risk management (LCRM) to this collection.
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Some documents from the 1990s which aren't used now have been withdrawn. The collection is now grouped more clearly and the messaging has been removed from this collection because all of the important information is now in https://www.gov.uk/guidance/land-contamination-risk-management which has been brought into this collection.
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Added link to contaminated land capital projects forms.
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Linked to additional publications.
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First published.