🌊 Can I Swim?

All beaches Areas How it works

All beaches › Areas

Bathing water in Cardiff, Wales

1 designated bathing water. Today's readings load below.

Checking…

Llanishen Reservoir
Cardiff · Wales
Checking…

Can I Swim? shows official warnings, live sewage spill data and rainfall for every designated bathing water in Britain and Ireland. It is not an official source: if a sign at the beach says otherwise, believe the sign.

Where the data comes from

Environment Agency and Natural Resources Wales — daily pollution risk forecasts, open pollution incidents and bathing water classifications
SEPA and DAERA — Scottish daily predictions and Northern Irish sampling
The EPA and local authorities in Ireland — statutory bathing restrictions
Eleven water companies — live storm overflow status for 18,600 monitored outfalls
Open-Meteo — rainfall

Contains public sector information licensed under the Open Government Licence v3.0. Water company data under CC BY 4.0. How this works and what it can't tell you.