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Who we are

Who we are

Who are Thames Water Wholesale?

We’re part of the Thames Water Group. We act as the commercial and customer service link between Thames Water and purchasers of water and/or wastewater wholesale services.

This means we provide water and/or wastewater wholesale services to:

  • Retailers
  • Business customers
  • New Appointments and Variations (NAVs)
  • Other wholesalers and other third parties

If you’re a non-household customer, your water and wastewater services are sold to you by your retailer — we provide it to the retailer.

What we do

We operate across London and the Thames Valley. We’re responsible for the abstraction, storage, treatment and distribution of your water services, as well as the collection, treatment and disposal of your wastewater services.

Where we supply

Supply area map

To check if you're in our supply area, enter your postcode in our supply checker.

Doing business with us

Wholesale Market Services are the commercial and customer service link between Thames Water and purchasers of water and/or wastewater wholesale services. We're here to make sure you receive the best possible service and experience when doing business with us. We're committed to working with you to ensure we support and help facilitate competition. We continue to work to improve the services we deliver.

Find out more

If you’re a retailer, business customer, new appointment and variation (NAV), wholesaler, or a third party wanting to know more about becoming a customer please visit our contact us page.

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