Charges and billing
To calculate the cost of supplying services to a potential customer within the Welsh Water supply area, see our published charges for our wholesale services.
The Wholesale Charging Rules require each undertaker considering significant changes to its Primary Charges, to publish information informing stakeholders of the scope of its proposed changes no later than six months before publishing its final charges.
In accordance with information requirement A2 of Ofwat’s rules for wholesale charging:
- We confirm that we anticipate increases of around 10% to wholesale water primary charges applicable to Eligible Sites for 2023/24, based on our current inflation forecast.
- We are not proposing to change the structure of any of the primary charges applicable to Eligible Sites for 2023/24.
Charging and Billing Documents
Charges and Billing 2023/24
- Board Assurance Statement 2023-2024
- Indicative Wholesale Tariff 2023-2024
- Statement of Significant Changes 2023-2024
Charges and Billing 2022/23
- Wholesale Tariff Document 2022-2023
- Assurance Statement - Wholesale Tariff Document 2022-2023
- Indicative Wholesale Tariff 2022-2023
- Indicative Board Assurance 2022-2023
- Statement of Significant Changes 2022-2023
- Wholesale Billing Timetable 2022-2023
Charges and Billing 2021/22
- Wholesale Tariff Document 2021-2022
- Statement of Board Assurance 2021-22
- Value Added Services – Charging information for Retailers 2021/22
- Indicative Wholesale Tariffs 2021-22
- Statement of Board Assurance - Indicative Wholesale Tariffs 2021-22
- Statement Of Significant Changes - Indicative Wholesale Tariffs 2021-22
- Wholesale Billing Timetable 2021-22
Charges and Billing 2020/21
- Wholesale Tariff Document 2020-21 Vs 2
- Statement of Board Assurance – Wholesale Tariff Document 2020-21
- Value Added Services – Charging Information for Retailers 2020/21 Vs2
- Indicative Wholesale Tariffs 2020-21
- Statement of Board Assurance - Indicative Wholesale Tariffs 2020-21
- Statement Of Significant Changes - Indicative Wholesale Tariffs 2020-21
- Wholesale Billing Timetable 2020-21
Charges and Billing 2019/20
- Wholesale Tariff Document 2019-20
- Statement of Board assurance - Wholesale Tariff Document 2019-20
- Value Added Services - Charging Information for Retailers 2019-20
- Indicative Wholesale Tariffs 2019/20
- Statement of Board Assurance - Indicative Wholesale Tariffs 2019-20
- Wholesale Billing Timetable 2019-20
Charges and Billing 2018/19
- Wholesale Tariff Document 2018-19
- Wholesale Billing Timetable 2018-19
- Indicative Wholesale Tariffs 2018-19
- Statement Of Significant Changes 2018-19