Update on Environment Agency investigation into sewage treatment works

On 18 November 2021, the Environment Agency and Ofwat announced separate major investigations into potential widespread non-compliance by water and sewerage companies at wastewater treatment works (WWTW).

One year on, and the Environment Agency is now investigating more than 2,200 WWTW that discharge into English waters. This relates to all water and sewage companies.

The Environment Agency’s initial assessment indicates that there may have been widespread and serious non-compliance with the relevant regulations by all water and sewerage companies.

When the Environment Agency completes their investigation, they will consider all the options available under their enforcement and sanctions policy. As with all criminal investigations, they need to obtain and secure evidence to make sure they can prove their case beyond reasonable doubt if they begin court proceedings.