Southern Water Change of Address | Moving Home
Leaving, joining or staying with Southern Water? Here’s how to update or cancel your account quickly, plus everything else for your move.
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Southern Water moving home: how to update your address
If you are moving home, you will need to update your address with your water and sewerage provider. This guide covers how to update your address with Southern Water, whether you are leaving the area, joining them for the first time, or simply moving within their jurisdiction.
You will need to tell Southern Water you are moving even if you are leaving their area entirely, since they will need to send you a final bill or close your account correctly.
How to update your address with Southern Water
There are two ways to update your address with Southern Water.
Update online in one go with SlothMove
SlothMove is directly integrated with Southern Water and every other water and sewerage supplier in the UK. Using SlothMove’s home setup service, you can update Southern Water alongside your council tax and over 100 other organisations in a single online form. The process takes three steps:
- Enter your new and previous postcode. SlothMove identifies your new and previous council tax and water providers automatically.
- Select who you’d like to update, such as Southern Water, your council, your bank, the NHS and any loyalty cards.
- Submit the form. SlothMove sends an automatic change of address notification to Southern Water and every other service you selected.
Update directly with Southern Water
If you would rather update Southern Water yourself, you can create an account on the Southern Water moving home page directly, or call them on 0330 303 0368.
If you update directly with Southern Water, remember you will still need to separately update your previous water provider, your council and any other services. SlothMove’s moving home checklist covers everyone you need to contact.
What you'll need to update your account
To complete your Southern Water change of address, you will need to provide:
- Your previous address
- Your new address
- Your customer number
- A meter reading, if you live in a metered property
What happens after you submit your change of address
Once you submit, SlothMove sends an automatic change of address notification to Southern Water. They will then reach out within 2 to 4 weeks to confirm your address change or new account setup.
Paying your final bill or setting up payment
If you are leaving Southern Water’s area, you will need to pay your final bill. If you are moving into the area from another provider, such as Thames Water, you will need to set up your payment details.
If you are moving within Southern Water’s area, your Direct Debit will usually continue automatically. This can change depending on your current payment plan and whether your new or previous property has a water meter.
How to cancel your Southern Water account
You can close your Southern Water account in the same way you would set one up, either directly with Southern Water or using SlothMove’s change of address service.
To cancel Southern Water:
- Enter your new and previous postcode on SlothMove’s update service.
- Select Southern Water as your previous supplier.
- Complete the form and SlothMove will let Southern Water know you’ve moved out, and when.
If your account is in debit, Southern Water will send a final bill to your new address within 2 weeks. You will need to clear this balance within 28 days. If you have overpaid, you will receive a credit instead.
Before you leave your old property, take a meter reading if your water is metered, and note down the last day you lived there. This will help Southern Water close your account accurately and quickly.
Update Southern Water and the rest of your move in one go
Moving home usually means updating your address with far more than just your water supplier. SlothMove’s home setup service lets you update Southern Water, your council tax, your energy supplier, the NHS, HMRC and hundreds of other organisations from a single form, so you are not repeating the same details across dozens of separate websites and phone calls.
Here’s why over 75,000 people have chosen SlothMove:
- Save 14+ hours of admin time: based on data from over 75,000 completed moves.
- One form updates everything: DVLA, NHS, HMRC, councils, utilities, and more.
- Cheaper than mail redirection: Just £30 versus up to £87 for mail forwarding.
- Secure and trusted: ICO-registered, GDPR compliant, with 256-bit SSL encryption, backed by Taylor Rose MW (one of the UK’s largest conveyancing firms).
SlothMove handles your Southern Water update along with all your other essential updates. No chasing, no forgotten providers, no stress.
Related articles and Guides
If you are updating your address with Southern Water, you are probably updating several other accounts at the same time. These guides cover the rest of your move:
How to change your address online
Council tax change of address
Switching energy suppliers when moving house
Change of address checklist
How to update your address with HMRC
What our customers say
Frequently asked questions
How do I update my address with Southern Water when moving home?
You can update your address directly with Southern Water online, or update Southern Water alongside your council tax, energy supplier and other accounts in one go using SlothMove’s home setup service.
How do I cancel my Southern Water account?
Enter your new and previous postcode, select Southern Water as your previous supplier, and submit the form. Southern Water will send a final bill to your new address within 2 weeks, which must be cleared within 28 days.
What information do I need to update my Southern Water account?
You will need your previous address, new address, customer number, and a meter reading if your property is metered.
Will my Direct Debit continue automatically if I move within the Southern Water area?
Usually, yes, although this can change depending on your current payment plan and whether your property has a water meter.
How long does Southern Water take to confirm a change of address?
Southern Water typically reaches out within 2 to 4 weeks of receiving your change of address notification.
About SlothMove
SlothMove has helped over 75,000 UK residents update their address across government and private organisations since 2019. We are an ICO-registered data controller, GDPR compliant, and backed by Taylor Rose MW, one of the UK’s
leading conveyancing firms.