Research and analysis
E9b: Matrix of environmental management metrics for English aquaculture, 1992 to 2023
Updated 1 December 2025
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| Indicator for | Metric | Unit | Time series | Sector | Trend |
|---|---|---|---|---|---|
| Seafood supply | Production | Tonnes | 2012 to 2021 | Bivalve shellfish | No trend |
| Seafood supply | Production | Tonnes | 2012 to 2021 | Finfish | Decreasing trend |
| Managing pressures on local environments | Aquatic Animal Health compliance | Number of enforcement actions pernumber of farms | 2011 to 2022 | Bivalve shellfish | No trend |
| Managing pressures on local environments | Aquatic Animal Health compliance | Number of enforcement actions pernumber of farms | 2011 to 2022 | Finfish | No trend |
| Managing pressures on local environments | Farm pollution offences | Number of pollution incidents per number of farms | 2011 to 2022 | Bivalve shellfish | Not relevant |
| Managing pressures on local environments | Farm pollution offences | Number of pollution incidents per number of farms | 2011 to 2022 | Finfish | No trend |
| Managing pressures on local environments | Triploidy | Percentage reported as triploid | 2012 to 2021 | Bivalve shellfish | Decreasing trend |
| Managing pressures on local environments | Triploidy | Percentage reported as triploid | 2012 to 2021 | Finfish | Not relevant |
| Managing pressures on local environments | Antibiotic use | Milligrams active ingredients per kilograms production | 2017 to 2022 | Bivalve shellfish | Not relevant |
| Managing pressures on local environments | Antibiotic use | Milligrams active ingredients per kilograms production | 2017 to 2022 | Finfish | No trend |
| Environmental contamination | Chemical contamination | Percentage non-compliant samples | 2015 to 2023 | Bivalve shellfish | No trend |
| Environmental contamination | Chemical contamination | Percentage non-compliant samples | 2011 to 2022 | Finfish | Decreasing trend |
| Environmental contamination | Bacterial contamination | Percentage of samples above threshold for E. coli | 1992 to 2022 | Bivalve shellfish | Decreasing trend |
| Environmental contamination | Bacterial contamination | Percentage of samples above threshold for E. coli | 1992 to 2022 | Finfish | Not relevant |
| Environmental contamination | Biotoxin contamination | Percentage of samples above Maximum Permitted Level | 2016 to 2022 | Bivalve shellfish | No trend |
| Environmental contamination | Biotoxin contamination | Percentage of samples above Maximum Permitted Level | 2016 to 2022 | Finfish | Not relevant |