Derreen — water body quality
near Rathdangan
Official classification
Good
Assessed 2026
| Stretch | Status |
|---|---|
| Derreen | Good |
| Derreen | Good |
| Derreen | High |
| Derreen | Good |
| Derreen | Good |
| Derreen | Good |
| Derreen | Good |
| Derreen | Good |
| Derreen | Good |
| Derreen | Good |
Overall status reflects the worst stretch (precautionary).
This page shows water-quality information, not swim-safety advice. For today's conditions and swim-safety guidance, check Water Safety Ireland.