Information notice 21/04: Expectations, assurance and information requirements for water company charges for 2022-23. This document sets out how we expect water companies to engage with customers and stakeholders when developing their charging policy and charges, as well as our expectations around charges assurance. It also summarises the charges information requirements on water companies and the timetable for publishing this information. This document should be read in conjunction with our charging rules which set out the requirements in full as well the changes we made to the charging rules which will come into effect from 1 April 2022. This information notice is an update from Information notice 20/07.