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

To ask His Majesty's Government how many criminal convictions have been secured by regulators against Southern Water since privatisation.

Since the privatisation of water and sewerage companies in 1989, all ten Water and Sewerage companies which discharge into English waters have been convicted of criminal offences including Southern Water. Details of the enforcement action taken against water companies by regulators are available on the relevant regulators’ websites.

We will not let companies get away with illegal activity and where breaches are found, the regulators will not hesitate to hold companies to account. The Water (Special Measures) Act 2025 provides the most significant increase in enforcement powers for the regulators in a decade and ensures that imprisonment is always available as a sentencing option to the courts where investigations by the environmental regulators have been obstructed.