Water companies
Dŵr Cymru Welsh Water phone numbers
Edited by Richard BarkerChecked 13 October 2026
Dŵr Cymru Welsh Water publishes 6 numbers for you to call on its own website. We list each one with the page it is on (1 page in all), a short quote from that page and the date we checked it.
Numbers to call Dŵr Cymru Welsh Water
What each line is for, as Dŵr Cymru Welsh Water describes it, with opening hours where it gives them.
- 0800 052 0130
You call them on this number
Operations team for emergencies and reporting problems
Hours: 24 hours a day, 7 days a week
Source: “Speak to our operations team: 0800 052 0130” (opens in a new tab). Checked 13 October 2026.
- 0800 052 0145
You call them on this number
Billing and account enquiries
Hours: Monday to Friday 8am to 6pm
Source: “Speak to our Billing team: 0800 052 0145” (opens in a new tab). Checked 13 October 2026.
- 0800 052 6058
You call them on this number
Welsh language line
Hours: Monday to Friday 8am to 6pm
Source: “If you'd prefer to speak to us in Welsh 0800 052 6058” (opens in a new tab). Checked 13 October 2026.
- 029 2058 4977
You call them on this number
Billing team for customers calling from abroad
Hours: Monday to Friday 8am to 6pm
Source: “Calling from abroad? +44 2920 584 977” (opens in a new tab). Checked 13 October 2026.
- 0800 917 2652
You call them on this number
Developer Services team
Hours: Monday to Friday 8:30am to 5pm
Source: “Speak to our Developer Services team: 0800 917 2652” (opens in a new tab). Checked 13 October 2026.
- 0800 281 141
You call them on this number
Checking the identity of a visiting officer or reporting a bogus caller
Hours: 24 hours a day, 7 days a week
Source: “Bogus caller / checking a visiting officers identity: 0800 281 141” (opens in a new tab). Checked 13 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.
This could still be a scam call
Criminals can make their number look like a genuine one (this is called spoofing). If someone calls from this number and asks for money, bank details, a code or passwords, hang up. Then call Dŵr Cymru Welsh Water back on a number you've found yourself, such as the one on their own website or on a letter or bill from them.
Safe ways to check
- Dŵr Cymru Welsh Water's own contact page (opens in a new tab): Where this number is published.
- Report Fraud (opens in a new tab): Report fraud and cyber crime in England, Wales and Northern Ireland. In Scotland, call Police Scotland on 101.
- Forward scam texts to 7726 (opens in a new tab): It is free, and reports the message to your mobile provider.
- How number spoofing works: Why a genuine number on your screen does not prove who is calling.
Questions about Dŵr Cymru Welsh Water’s numbers
What numbers can I call Dŵr Cymru Welsh Water on?
Dŵr Cymru Welsh Water publishes 6 numbers for the public to call. They include: 0800 052 0130 (Operations team for emergencies and reporting problems); 0800 052 0145 (Billing and account enquiries); 0800 052 6058 (Welsh language line). Check the source page for each one before you call, as numbers and opening hours change.
Does Dŵr Cymru Welsh Water publish a number on its own website that is not listed here? Suggest a number for Dŵr Cymru Welsh Water.
Sources and checks
This page relies on:
Checked on 13 October 2026. Read how we build the directory. How we check our information. Spotted a mistake? Tell us and we will put it right.