Affinity Water
Central region only: Bedfordshire, Berkshire, Buckinghamshire, Hertfordshire, Surrey and parts of London and Essex.
- Recorded status
- Enforceable
- Effective
- 00:01 on 17 July 2026
Water company register
Restriction status by drinking-water supplier
Eight supplier records were checked 28 July 2026. Company pages explain the recorded scope, the date and where a property-level check is still needed.
Why company pages?
Supply boundaries do not follow place names neatly
A county, town or postcode district can contain more than one drinking-water supplier. We publish pages only where there is a current company source. We do not generate thin pages for every location.
Anglian Water
All customers supplied drinking water by Anglian Water, except customers in Hartlepool.
- Recorded status
- Enforceable
- Effective
- 01:01 on 11 July 2026
Cambridge Water
All customers across the Cambridge Water supply region.
- Recorded status
- Enforceable
- Effective
- 01:00 on 17 July 2026
Southern Water
Southern Water supply areas in Hampshire and on the Isle of Wight.
- Recorded status
- Enforceable
- Effective
- In force when the supplier source was reviewed on 28 July 2026
South East Water
All South East Water supply areas: Kent, Sussex, Surrey, Hampshire and Berkshire.
- Recorded status
- Enforceable
- Effective
- Kent from 3 July; remaining supply areas from 25 July 2026
South West Water
Mid Devon and parts of East Devon and Dorset, including the named towns on the supplier page.
- Recorded status
- Enforceable
- Effective
- 12:00 on 14 July 2026
Thames Water
The whole Thames Water supply area.
- Recorded status
- Enforceable
- Effective
- 00:01 BST on 23 July 2026
Dŵr Cymru Welsh Water
Mid and south Ceredigion, parts of north Pembrokeshire and north Carmarthenshire.
- Recorded status
- Enforceable
- Effective
- 10:00 on 19 July 2026