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

To ask the Secretary of State for Environment, Food and Rural Affairs, which water companies are planning to trial progressive or rising block water tariffs, and to what timetables, according to the latest information held by (a) Ofwat and (b) his Department.

All companies plan to trial new charging structures by 2030. A list of all current and planned trials is publicly available on Ofwat’s website, which can be found here.