🇮🇪 Bathing water quality in Ireland

Also known as Éire, Eire, Irlandia. 153 officially monitored bathing sites, tested all season for sewage bacteria.

153monitored sites
79%rated Excellent
1rated Poor
10turned around

Home › Ireland

Excellent: 120Good: 23Sufficient: 7Not classified: 2Poor: 1

⚠️ Rated Poor in Ireland — think twice

A Poor classification means persistent contamination across recent seasons. Authorities must advise against bathing, or ban it, at these sites.

✅ The safest bets in Ireland

Sites that have held the top rating five seasons in a row — not a one-year fluke.

📈 Turned around

These were rated Poor or Sufficient a few seasons ago and are Excellent today.

📍 Destinations in Ireland

Common questions about swimming in Ireland

Is it safe to swim in Ireland?
Mostly yes. 79% of Ireland's 153 officially monitored bathing sites hold the top "Excellent" class in the 2025 assessment, but 1 site is rated Poor — bathing there is advised against or banned all season.
Which beaches in Ireland should I avoid?
The 1 rated Poor: Dun Laoghaire Baths. Poor means the site failed the minimum standard across four seasons of sampling.
Where is the water cleanest in Ireland?
96 sites have held the top rating five seasons running — a far better signal than a single good year. Around Dublin, Galway, Cork you will find the densest clusters.
How often is water quality tested in Ireland?
Through the whole bathing season. National sanitary authorities sample each official site for E. coli and intestinal enterococci, report to the European Environment Agency, and the published class reflects the last four seasons combined.

Ratings are the official season-long classification, computed from the last four seasons of sampling — not a live reading. After a storm any site can be temporarily worse; local advisories win.