Average spills per storm overflow, England (2025)
20.5spills per overflow
Environment Agency, storm overflow spill data for 2025 reports average spills per storm overflow, England (2025) of 20.5spills per overflow for 16 June 2026.
Changes
No changes since we first published this figure.
Where we use it
- Tim Farron on storm overflow spill hours, 16 June 2026
Tim Farron said: “Instead, sewage was released into our lakes, rivers and seas for 1.8 million hours last year, and more than 100,000 of those were in the Thames region alone.” This page repeats what Environment Agency reports.
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