South Staffordshire Water supplies Cambridge, and the quality of that water is regulated by the Drinking Water Inspectorate in England and Wales, per ONS Postcode Directory (May 2026), each postcode placed in the water companies' supply-area boundaries (read 26 September 2026).
Source: ONS Postcode Directory (May 2026), each postcode placed in the water companies' supply-area boundaries — read 26 September 2026Contains OS data © Crown copyright and database right 2026Contains Royal Mail data © Royal Mail copyright and database right 2026Source: Office for National Statistics licensed under the Open Government Licence v.3.0Water company boundaries © Water UK, licensed under CC BY 4.0
Drinking Water Inspectorate (DWI) enforces the UK drinking water quality regulations in England and Wales. Figures it classifies or regulates on this page cover England and Wales only.
The official answer
Cambridge is supplied by South Staffordshire Water, whose water is regulated by Drinking Water Inspectorate under the UK drinking water quality regulations.
Source: ONS Postcode Directory (May 2026), each postcode placed in the water companies' supply-area boundaries — read 26 September 2026Contains OS data © Crown copyright and database right 2026Contains Royal Mail data © Royal Mail copyright and database right 2026Source: Office for National Statistics licensed under the Open Government Licence v.3.0Water company boundaries © Water UK, licensed under CC BY 4.0
Who supplies Cambridge
South Staffordshire Water's supply area (100% of the 2,952 live postcodes in Cambridge): 2952 postcodes
Source: ONS Postcode Directory (May 2026), each postcode placed in the water companies' supply-area boundaries — read 26 September 2026Contains OS data © Crown copyright and database right 2026Contains Royal Mail data © Royal Mail copyright and database right 2026Source: Office for National Statistics licensed under the Open Government Licence v.3.0Water company boundaries © Water UK, licensed under CC BY 4.0
What South Staffordshire Water's own figures show
South Staffordshire Water's published drinking water quality results: 65715 published sample results
Source: South Staffordshire Water's published drinking water quality results, published on the water industry's shared data portal — dated 20 September 2026, read 20 September 2026Cambridge Water Domestic Water Quality © 2024 by Cambridge Water is licensed under CC BY 4.0
South Staffordshire Water's published drinking water quality results: 290756 published sample results
Source: South Staffordshire Water's published drinking water quality results, published on the water industry's shared data portal — dated 20 September 2026, read 20 September 2026South Staffs Water Domestic Water Quality © 2024 by South Staffs Water is licensed under CC BY 4.0
What an independent test shows
We have not tested Cambridge’s water ourselves. Nothing on this page is our own measurement. You can have your own supply tested.
Related pages
- What we hold on tap-water safety, town by town
- Hard water in the UK
- Check your postcode
- Every zone we hold a figure for
- South Staffordshire Water: what we hold
- South Staffordshire Water hosepipe ban status
- What South Staffordshire Water publishes for your postcode
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