Wholesale Charging Rules
| Date of Issue of the charging rules | Summary of change to the Wholesale Charging Rules | Link to relevant publication |
| 20 October 2021 | Adding a small number of definitions and clarifying the publication dates of charging document | Statutory consultation on updating Ofwat’s charging rules |
| 27 March 2020 | A new sentence has been added to confirm that these rules apply to the Isles of Scilly from 1 April 2020. | Ofwat’s reasons for varying South West Water’s area of appointment and updating statutory documents to include the Isles of Scilly |
| 20 December 2018 | Amendment to the definition of a small company | Charges Scheme Rules, Wholesale Charging Rules and Charging Rules for New Connection Services (English Undertakers) decision document |
| 16 October 2018 | Amendment focused on making March 2018 changes permanent. | Consultation on changes to the Wholesale Charging Rules in accordance with 66E and 117I of the Water Industry Act 1991 |
| March 2018. Expired September 2018 | Temporary change to ensure that our charging rules for new connection services (English Undertakers) apply to developer services requested through a retailer. | Changes to our wholesale charging rules to include charging rules for new connection services for English water companies |
| November 2016 | First issue of charging rules | Link Wholesale Charging Rules – Decision Document
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Charges Scheme Rules
| Date of Issue of the charging rules | Summary of change to the Charges Scheme Rules | Link to relevant publication |
| 5 December 2022 | Strengthening the role of affordability and other key charging principles, and clarifying our position on charging trials | Charging rules from April 2023 |
| 20 October 2021 | Moving rules relating to infrastructure charges to the Charging rules for New Connection Services (English Undertakers). Also, simplifying the publication dates of charging publications. | link Charging rules from April 2022 |
| 27 March 2020 | Insertion of new 2A to confirm that the rules apply on the Isles of Scilly from 1 April 2020 | Ofwat’s reasons for varying South West Water’s area of appointment and updating statutory documents to include the Isles of Scilly |
| 20 December 2018 | Amendment to make the previous temporary amendment permanent. | Charges Scheme Rules, Wholesale Charging Rules and Charging Rules for New Connection Services (English Undertakers) decision document |
| 29 June 2018 | Temporary amendment focused on when infrastructure charges can be levied. | Changes to our Charges Scheme Rules and Charging Rules for New Connection Services (English Undertakers) concerning infrastructure charges made by English water companies |
| 15 December 2016 | Changes made to align with the newly introduced Charging Rules for New Connection Services (English Undertakers) | Charging rules for new connections: decision document |
| 17 November 2015 | First issue of charging rules | Final charges scheme rules and summary of responses to our draft charges scheme rules |
Charging Rules for New Connection Services (English Undertakers)
| Date of Issue of the charging rules | Summary of change to the Charging Rules for New Connection Services (English Undertakers) | Link to relevant publication |
| 20 October 2021 | Moving rules relating to infrastructure charges from the Charges Scheme Rules. Adding a number of standardised terms. Also, simplifying the publication dates of charging publications. | Charging rules from April 2022 |
| 27 March 2020 | Change to paragraph 2 to confirm that from 1 April 2020 these rules will also apply to the Isles of Scilly. | Ofwat’s reasons for varying South West Water’s area of appointment and updating statutory documents to include the Isles of Scilly |
| 15 July 2019 | Moved the income offset from requisition charges to infrastructure charges. Clarified the balance of charges rule. | Charging rules for new connections and new developments for English companies from April 2020 – decision document |
| 20 December 2018 | Amendment to make the June 2018 changes permanent. | Charges Scheme Rules, Wholesale Charging Rules and Charging Rules for New Connection Services (English Undertakers) decision document |
| 29 June 2018 | Temporary urgent amendment to definition of network reinforcement to ensure that infrastructure charges could be levied regardless of the method by which developer services are procured. | Changes to our Charges Scheme Rules and Charging Rules for New Connection Services (English Undertakers) concerning infrastructure charges made by English water companies |
| 8 December 2017 | First issue of charging rules | New Connections Charging |