The number of discharges from combined sewer overflows (CSOs) rose by 54% in 2023, in what the Environment Agency has described as a “disappointing […] but not surprising” year. Environment Agency figures show 464,056 sewage spills were reported in England in 2023 - the highest number since records began in 2016. However, this was the first year with complete event duration monitor (EDM) coverage, which was a legal requirement by the end of 2023 for all CSOs in England.
Storm overflow discharges up 54%
