Charges and billing
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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.

Wholesale Industrial Tariffs – Charges for 2020/21

In accordance with information requirement A2 of Ofwat’s rules for wholesale charging, confirmed in the letter to Regulation Directors of 14 June 2019:

 -  We confirm that, based on the plan that we have submitted for PR19, we do not anticipate any significant increases to wholesale water primary charges applicable to Eligible Sites for 2020/21.
 -  We are not proposing to change the structure of any of the primary charges applicable to Eligible Sites for 2020/21. 

The above statements are made on our reasonable expectations for wholesale water charges for 2020/21. However, there is greater uncertainty around the scope for any changes for this year due to the Company not being in a position to know the results of the price review process at this time.

Charging and Billing Documents

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 Retaailers 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 

Charges and Billing 2017/18

Wholesale Tariff Document 2017/18

Wholesale Billing Timetable 2017/18


Leakage Non Household Customers