What contaminants are in Portsmouth tap water?

The most commonly flagged contaminants across Portsmouth are Nitrite (flagged in 4 areas). No PFAS were detected.

England

Is Portsmouth tap water safe to drink?

Q: Is Portsmouth tap water safe to drink?

Yes, Portsmouth tap water is generally safe to drink. Across 7 areas tested, the average water quality score is 8.5/10. Portsmouth Water draws from chalk springs and boreholes in the Hampshire Downs, one of the UK's smallest water companies.

Q: Who supplies water in Portsmouth?

Water in Portsmouth is supplied by Portsmouth Water. Portsmouth Water draws from chalk springs and boreholes in the Hampshire Downs, one of the UK's smallest water companies.

Portsmouth Water draws from chalk springs and boreholes in the Hampshire Downs, one of the UK's smallest water companies.

Average score

8.5/10

Areas tested

Issues flagged

PFAS detected

None

Yes, Portsmouth tap water is safe to drink. Based on 7 areas tested, Portsmouth has an average water quality score of 8.5/10. 4 contaminants were flagged above recommended levels across all areas. Water is supplied by Portsmouth Water. Portsmouth Water draws from chalk springs and boreholes in the Hampshire Downs, one of the UK's smallest water companies.

Top concerns in Portsmouth

Contaminants flagged most often across the city.

Nitrite4 areas

Water quality by area

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

PostcodeAreaScoreFlaggedSupplier

PO7Portsmouth8.10Portsmouth Water PO1Portsmouth8.41Portsmouth Water PO4Portsmouth8.41Portsmouth Water PO3Portsmouth8.51Portsmouth Water PO5Portsmouth8.51Portsmouth Water PO6Portsmouth8.50Portsmouth Water PO2Portsmouth8.80Portsmouth Water

Main water supplier

Portsmouth Water

Check your postcode

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