Fairy Water (Envagh) — water body quality
near Castlederg, Derry City and Strabane
Fairy Water (Envagh) is a river in Derry City and Strabane, near Castlederg, extending 14.6 km.
Official classification
Moderate
Assessed 2026
Moderate is the first Water Framework Directive class that falls short of the Directive’s objective: the biological communities here differ moderately from those expected in a near-natural water body of this type, so a programme of measures applies.
| Stretch | Status |
|---|---|
| Fairy Water (Envagh) | Moderate |
Overall status reflects the worst stretch (precautionary).
This water body
- Type
- River
- Length
- 14.6 km
- County
- Derry City and Strabane
- Location
- 54.6559, -7.5374
Others in Derry City and Strabane
- Altinaghrea Burn, MagheramasonGood
- Burn Dennet River (Ballynamallaght), BallymagorryGood
- Burn Dennet River (Dunnamanagh), BallymagorryGood
- Burn Dennet River (Milltown), BallymagorryModerate
- Burngibbagh, New BuildingsGood
- Burntollet River (Lougheramore), EglintonModerate
- Burntollet River (Ness Wood), EglintonModerate
- Cappagh Burn, NewtownstewartModerate
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.