tapwater.uk

Southern Water

Water quality report — South East

7.1/10

Average score

Good

SO15

Lowest scored area

0/10

PO2

Highest scored area

9.9/10

4

Contaminants flagged

across all areas

Water Quality Across Southern Water Area

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

PostcodeAreaScoreStatus
SO15Southampton0/10Very Poor
BN1Brighton and Hove6.5/10Fair
BN2Brighton and Hove6.5/10Fair
SO14Southampton9.7/10Excellent
PO1Portsmouth9.9/10Excellent
PO2Portsmouth9.9/10Excellent

Postcode Areas Served

All postcode districts within Southern Water's supply network.

BN1Brighton and Hove6.5BN2Brighton and Hove6.5PO1Portsmouth9.9PO2Portsmouth9.9SO14Southampton9.7SO15Southampton0
Supplier compliance rates are sourced from the Drinking Water Inspectorate (DWI) annual reports. Postcode scores are calculated from Environment Agency monitoring data. See our methodology for full details.