What contaminants are in Cardiff tap water?

No contaminants were flagged above recommended levels across Cardiff. All tested areas passed on the parameters measured.

Wales

Is Cardiff tap water safe to drink?

Q: Is Cardiff tap water safe to drink?

Yes, Cardiff tap water is generally safe to drink. Across 10 areas tested, the average water quality score is 9.5/10. Dŵr Cymru Welsh Water supplies Cardiff from reservoirs in the Brecon Beacons and Taff Fawr valley.

Q: Who supplies water in Cardiff?

Water in Cardiff is supplied by Dŵr Cymru Welsh Water. Dŵr Cymru Welsh Water supplies Cardiff from reservoirs in the Brecon Beacons and Taff Fawr valley.

Dŵr Cymru Welsh Water supplies Cardiff from reservoirs in the Brecon Beacons and Taff Fawr valley.

Average score

9.5/10

Areas tested

Issues flagged

PFAS detected

None

Yes, Cardiff tap water is safe to drink. Based on 10 areas tested, Cardiff has an average water quality score of 9.5/10. No contaminants were found above recommended levels. Water is supplied by Dŵr Cymru Welsh Water. Dŵr Cymru Welsh Water supplies Cardiff from reservoirs in the Brecon Beacons and Taff Fawr valley.

Water quality by area

All postcode districts in Cardiff, ranked by water quality score.

PostcodeAreaScoreFlaggedSupplier

CF24Cardiff9.30Dŵr Cymru Welsh Water CF10Cardiff9.40Dŵr Cymru Welsh Water CF11Cardiff9.40Dŵr Cymru Welsh Water CF15Cardiff9.40Dŵr Cymru Welsh Water CF23Cardiff9.40Dŵr Cymru Welsh Water CF14Cardiff9.50Dŵr Cymru Welsh Water CF5Cardiff9.50Dŵr Cymru Welsh Water CF83Cardiff9.50Dŵr Cymru Welsh Water CF72Cardiff9.60Dŵr Cymru Welsh Water CF30Cardiff10.00Dŵr Cymru Welsh Water

Main water supplier

Dŵr Cymru Welsh Water

Check your postcode

Get a detailed water quality report for your exact area in Cardiff.