According to the source, serious incidents are the ones ranked as Category 1 and 2. Category 1 incidents have a serious, extensive or persistent impact on the environment, people or property. Category 2 incidents have a lesser, yet significant, impact.
This statistic has been compiled from multiple reports.
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Serious pollution incidents from water and sewage companies in England 2013-2022
Sewage and water companies in England were responsible for ** serious pollution incidents in 2022. This was a decrease from the previous year and the lowest since 2013, when sewage and water companies caused almost ** serious pollution incidents.
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Environment Agency. (July 31, 2023). Total number of serious pollution incidents from sewage and water supply assets in England from 2013 to 2022 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1395107/water-sewage-company-serious-pollution-incidents-england/
Environment Agency. "Total number of serious pollution incidents from sewage and water supply assets in England from 2013 to 2022." Chart. July 31, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1395107/water-sewage-company-serious-pollution-incidents-england/
Environment Agency. (2023). Total number of serious pollution incidents from sewage and water supply assets in England from 2013 to 2022. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1395107/water-sewage-company-serious-pollution-incidents-england/
Environment Agency. "Total Number of Serious Pollution Incidents from Sewage and Water Supply Assets in England from 2013 to 2022." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 Jul 2023, /statistics/1395107/water-sewage-company-serious-pollution-incidents-england/
Environment Agency, Total number of serious pollution incidents from sewage and water supply assets in England from 2013 to 2022 ÌÇÐÄÆƽâ°æ, /statistics/1395107/water-sewage-company-serious-pollution-incidents-england/ (last visited July 31, 2026)
Total number of serious pollution incidents from sewage and water supply assets in England from 2013 to 2022 [Graph], Environment Agency, July 31, 2023. [Online]. Available: /statistics/1395107/water-sewage-company-serious-pollution-incidents-england/
