Dŵr Cymru Welsh Water

Water quality report — Wales

9.5/10

Average score

Excellent

CF10

Lowest scored area

9.4/10

SA1

Highest scored area

9.6/10

Contaminants flagged

across all areas

Water Quality Across Dŵr Cymru Welsh Water Area

Scores sorted by lowest first — worst quality at the top.

Postcode	Area	Score	Status
CF10	Cardiff	9.4/10	Excellent
CF11	Cardiff	9.4/10	Excellent
CF14	Cardiff	9.5/10	Excellent
SA2	Swansea	9.5/10	Excellent
SA1	Swansea	9.6/10	Excellent

All postcode districts within Dŵr Cymru Welsh Water's supply network.