Environment & Climate
Suspected dry-weather sewage discharges increase in first five months of 2026
Freedom of Information data shows thousands of potential permit breaches by water firms in England and Wales, but industry officials say the numbers remain unverified.
The short version
- Freedom of Information requests revealed 7,280 suspected raw sewage discharges during dry weather in England and Wales from January through May 2026.
- Releasing raw sewage during dry spells is considered illegal and a breach of permits because low river volumes lack rainwater to dilute the waste.
- Water industry body Water UK said the figures are unverified and noted that companies plan to invest £12bn by 2030 to cut storm overflow spills by half.
Key facts
- Water companies in England and Wales recorded 7,280 suspected illegal raw sewage discharges during dry weather between January and May 2026, according to Environment Agency data obtained by former agency officer Robert Forrester via Freedom of Information requests.[The Guardian]
- The reported 7,280 incidents in the first five months of 2026 compare with 8,576 dry-spill discharges recorded for the entire year of 2025, which was the first year regulators mandated such reporting.[The Guardian]
- South West Water accounted for 1,299 dry-day discharges in the first five months of 2026, compared to 2,451 for all of 2025.[The Guardian]
- Trade association Water UK stated that the cited data is unverified and premature to categorize as confirmed dry-day spills.[The Guardian]
- South West Water stated that its live monitoring data requires validation prior to regulatory reporting and that factors other than rainfall can trigger overflow activations.[The Guardian]
What remains uncertain
- It is unverified whether all 7,280 flagged incidents meet the legal classification of dry-day spills, as live monitoring systems may record false readings or react to non-rainfall factors prior to regulatory validation.[The Guardian]
Sources
- Dry weather sewage discharges soar as water companies face scrutinyThe Guardian - Environment