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

To ask the Secretary of State for Environment, Food and Rural Affairs, what steps her Department is taking to ensure that water companies publish the data they collect on water quality in a timely manner.

The Government is driving up monitoring and transparency of water quality data. We have increased the number of storm overflows monitored across the network from 7% in 2010 to 91% now, and we will reach 100% by end of this year.

The Government has also required water companies to publish Event and Duration Monitoring (EDM) data annually since 2020. Data from 2022 was published in March 2023.

The Government is taking additional steps to further improve water quality data published by companies. In April 2023 we launched a consultation on continuous water quality monitoring, setting out proposals to enhance the monitoring of watercourses to show not just whether an overflow is discharging but also its impact on the receiving watercourse. The Government is currently analysing responses and will respond to the consultation in due course.

The Environment Agency has secured through the Water Industry National Environment Programme (WINEP), the monitoring of Storm Overflows through Event Duration Monitoring (EDM). There will be 100% coverage in England by December 2023. We secure the monitoring and reporting of EDM performance to the Environment Agency through requirements on water and sewerage company discharge permits.

Defra and Government have introduced statutory requirements on the water and sewerage companies to publish EDM data annually and in near real time.

There are also statutory requirements on water and sewerage companies through the environment act for water and sewerage companies to monitor and report on the water quality impacts of their discharges through installation of continuous water quality monitors. The Environment Agency is supporting Defra in their technical standards work around this monitoring and reporting and facilitating delivery by water and sewerage companies through the Environment Agency WINEP PR24 and future programme.