Portstewart Bay — water body quality
near Castlerock, Causeway Coast and Glens
Portstewart Bay is a coastal water in Causeway Coast and Glens, near Castlerock, covering 122.0 km².
Official classification
Good
Assessed 2026
Good ecological status under the Water Framework Directive means the biology and chemistry of this water body depart only slightly from near-natural conditions for its type, which meets the Directive’s environmental objective.
| Stretch | Status |
|---|---|
| Portstewart Bay | Good |
Overall status reflects the worst stretch (precautionary).
This water body
- Type
- Coastal water
- Area
- 122.0 km²
- County
- Causeway Coast and Glens
- Location
- 55.2050, -6.8143
Others in Causeway Coast and Glens
This page shows water-quality information, not swim-safety advice. For today's conditions and swim-safety guidance, check Water Safety Ireland.
Official classifications on this page contain DAERA/NIEA Water Framework Directive classification data © Crown copyright, licensed under Open Government Licence v3.0.