Official numbers
Water companies: official phone numbers
Numbers that water companies publish on their own websites, including emergency lines.
74 numbers from 22 organisations, checked 13 October 2026 to 14 October 2026.
Organisations
- Affinity Water
2 numbers
- Anglian Water
6 numbers
- Bournemouth Water
2 numbers
- Bristol Water
2 numbers
- Cambridge Water
3 numbers
- Dŵr Cymru Welsh Water
6 numbers
- Essex & Suffolk Water
4 numbers
- Hafren Dyfrdwy
2 numbers
- Network Plus
1 number
- NI Water
1 number
- Northumbrian Water
6 numbers
- Scottish Water
1 number
- SES Water
1 number
- Severn Trent
2 numbers
- South East Water
4 numbers
- South Staffs Water
3 numbers
- South West Water
1 number
- Southern Water
6 numbers
- Thames Water
5 numbers, including 3 it says it calls from
- United Utilities
6 numbers
- Wessex Water
2 numbers
- Yorkshire Water
8 numbers
Numbers they say they call from
Each organisation lists these on its own website. A caller can still fake one.
- 0800 009 3815
They may call you from this number
Thames Water
Number Thames Water may call from about outstanding debts
Source: “We may call from 0800 009 3815, 0800 009 3615 or 0800 009 3806” (opens in a new tab). Checked 14 October 2026.
- 0800 009 3615
They may call you from this number
Thames Water
Number Thames Water may call from about outstanding debts
Source: “We may call from 0800 009 3815, 0800 009 3615 or 0800 009 3806” (opens in a new tab). Checked 14 October 2026.
- 0800 009 3806
They may call you from this number
Thames Water
Number Thames Water may call from about outstanding debts
Source: “We may call from 0800 009 3815, 0800 009 3615 or 0800 009 3806” (opens in a new tab). Checked 14 October 2026.
How scams that copy water companies work
UK Finance says criminals pose as organisations such as utility companies, claiming you must settle a fine, pay a bill or return a refund paid by mistake. Check your account through the water company’s own website or the number on your bill.
Sources and checks
This page relies on:
- affinitywater.co.uk/contact
- anglianwater.co.uk/contact-and-support
- bournemouthwater.co.uk/household/help-support/faqs/about-us
- bristolwater.co.uk/contact-0
- bristolwater.co.uk/contact-2
- cambridge-water.co.uk/contact-us
- contact.dwrcymru.com/en
- eswater.co.uk/contact/
- hdcymru.co.uk/contact-us/
- networkplus.co.uk/contact/
- niwater.com/contact-us/
- nwl.co.uk/emergency/emergencyhelplines/
Checked on 13 October 2026 to 14 October 2026. Read how we build the directory. How we check our information. Spotted a mistake? Tell us and we will put it right.