Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, what assessment she has made of the potential compliance risks caused by erroneous monitoring data at Thames Water sewage treatment works, including East Shefford, Winterbourne, Hamstead Marshall, and Hungerford.

The Environment Agency (EA) has undertaken inspections of Thames Water sewage treatment works at East Shefford, Winterbourne, Hamstead Marshall and Hungerford. It has also assessed Event Duration Monitoring data from these sites and completed Event Duration Monitoring flow data assessments.

Winterbourne, Hamstead Marshall and Hungerford sewage treatment works had no permit breaches caused by erroneous flow monitoring data. East Shefford sewage treatment works had a breach relating to flow monitoring systems and missing flow data which will be enforced against in line with the EA’s Enforcement and Sanctions Policy.