Document library
Read important information relating to our services, tariffs, policies and supporting contractual documentation.
Wholesale service offering
- Wholesale service offering.pdf | 1.8 MB
- Non-household market participant feedback mechanisms.pdf | 1.2 MB
- Getting data from Thames Water meters.pdf | 511.4 KB
- Wholesale portal user guide.pdf | 2.3 MB
- NAV service offering.pdf | 442.1 KB
- NAV portal user guide.pdf | 2.7 MB
- NAV named contact details.pdf | 243 KB
Charges documents
- Wholesale tariff document 2023-24.pdf | 1.8 MB
- NAV tariff document 2023-24.pdf | 798.4 KB
- Statement of board assurance for wholesale charges 2023-24.pdf | 227.5 KB
- Statement of significant change for wholesale charges 2023-24.pdf | 203.9 KB
- CMOS tariff schedule - wholesale charges 2023-24.xlsx | 24.3 KB
- Wholesale invoicing timetable 2023-24.pdf | 127.1 KB
- Non-primary billing timetable 2023-24.pdf | 67.9 KB
- NAV billing timetable 2023-24.pdf | 69.1 KB
- Wholesale tariff document 2022-23.pdf | 1.8 MB
- Statement of board assurance for wholesale charges 2022-23.pdf | 212.7 KB
Applications and contracts
- Wholesale contract.pdf | 156 KB
- Wholesale supply application form.pdf | 37.7 KB
- Common carriage application form.pdf | 146.4 KB
- S1 secondary supplies initial enquiry form.pdf | 57.8 KB
- Draft confidentiality agreement.pdf | 68.1 KB
- Wholesale services agreement - combined supply.pdf | 130.5 KB
- WIRSAE Memorandum of Understanding.pdf | 2.4 MB
Policies
- Thames Water WIRSAE addendum.pdf | 396 KB
- Gap site incentive scheme.pdf | 176.5 KB
- Honest and ethical behaviour policy.pdf | 230.1 KB
- Metering policy.pdf | 407.3 KB
- Sensitive customers code of practice.pdf | 238.3 KB
- Private blockages code of practice.pdf | 390.3 KB
- Disconnections and reconnections code of practice.pdf | 287.7 KB
Access code and compliance code
Alternative credit support agreements
- ADSM 05/10/2023.pdf | 211.5 KB
- ADSM 04-04-2023.pdf | 140.5 KB
- Arla Foods 25-04-2023.pdf | 141.1 KB
- Castle Water 05/10/2023.pdf | 138 KB
- Castle Water 25-04-2023.pdf | 141 KB
- Clear Business Water 05/10/2023.pdf | 135.8 KB
- Clear Business Water 25-04-2023.pdf | 140.6 KB
- ConservAqua 05/10/2023.pdf | 163.8 KB
- ConservAqua 13-03-2023.pdf | 140.7 KB
- David Lloyd Leisure 25-04-2023.pdf | 141.1 KB
Previous years
- ADSM 29-03-2022.pdf | 149 KB
- Anglian 24-03-2022.pdf | 150.8 KB
- Anglian 01-04-2021.pdf | 147.1 KB
- ARLA 17-03-2022.pdf | 149.4 KB
- Business Stream 01-04-2021.pdf | 145.7 KB
- Castle 31-03-2022.pdf | 149.1 KB
- Castle 01-04-2021.pdf | 145.8 KB
- Clear Business 04-04-2022.pdf | 149 KB
- Clear Business 26-07-2021.pdf | 145.4 KB
- Conservaqua 30-03-2022.pdf | 150 KB
Data management status reports
We're active members of the Retailer Wholesaler Group and we're working to align with their good practice guidance.