Thames Water

0844 248 2562

The Thames Water complaints number can be used to make a complaint about the general company or it services, just call 0844 248 2562.

Department Contact Number Opening Times
Complaints 0844 248 2562 Monday-Friday: 9am-5pm
Customer Service 0843 290 7106 Monday-Friday: 9am-5pm
Service Complaints  0843 218 9683 Monday-Friday: 9am-5pm
Staff complaints  0843 218 9684 Monday-Friday: 9am-5pm
Leak Complaints  0844 453 0213 Monday-Friday: 9am-5pm
Account complaints  0843 218 9685 Monday-Friday: 9am-5pm


The complaints team can be called for any general complaints you have about Thames Water and their services. Just call the complaints number on 0844 248 2562, you may be transferred to a different department if they will be able to deal with your complaint better.

Customer Services

The customer services team can be contacted if you have any inquiries or problems that you would like help with. Simply call 0843 290 7106 to speak to a member of the team about any aspect of the company/services. You can also inquire about the complaints procedures and policies.

Service Complaints

If you are unhappy with the services you have received from Thames Water you can call the service complaints team on 0843 218 9683. You will need to explain what part of their services are unhappy with and you can even suggest improvements for them to take into consideration.

Staff Complaints

If you have spoken to a member of the Thames Water team via phone call or email or you have recently seen a repair team in person as well as any other Thames Water staff and you had a negative experience with them you can call the staff complaints team on 0843 218 9684, you may need to give a description of the experience and any information you have about the staff member.

Leak Complaints

If you’re experiencing a leak or you have recently seen a leak or you have had a leak recently and you’re unhappy with what the repair team have done to fix it (or it is leaking again) you can call the leak complaints team on 0844 453 0213, they may organise for another repair team to come out and fix the leak.

Account Complaints

The account complaints team deals with any complaints you may have about the account feature on the Thames Water website whether you can’t log in or you feel theres something missing you can complain about it by calling 0843 218 9685.