This dataset contains records of substantiated pollution incidents where the environmental impact is category 1 (major) or category 2 (significant). The dataset contains incidents that have a status of either completed or closed. Where incidents are uncompleted or have been reopened, the Environment Agency is reviewing the incident details or assessing the incident. Each incident is given an impact rating signifying its impact to air, land or water. Coordinates supplied by the Environment Agency have varying precision in this dataset and so a suitable buffer of 150m should be considered when using this data for site assessment.