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Porth Dafarch
Isle of Anglesey
We do not read the water company's overflow data here yet, so storm overflows within 3 km of Porth Dafarch are not shown.
The cleanest samples over the last four seasons. Heavy rain can lower water quality here.
- Latest E. coli
- <10
- per 100 ml, 16 Sep 2026
- Latest enterococci
- <10
- per 100 ml
- Overflows within 3 km
- -
- Spills nearby, 30 days
- -
- Excellent or Good
- Sufficient
- Poor
- Overflow discharging
- Overflow
- Offline
About this beach
Located on the west coast of Anglesey, between Trearddur Bay and South Stack on Holy Island, the beach is a small sandy, sheltered cove. Porth Dafarch is located within the Anglesey Area of Outstanding Natural Beauty and the Holy Island Coast Special Area of Conservation / Special Protection Area and Site of Special Scientific Interest. The water quality sample point is located at the centre of the bay.
From the Natural Resources Wales profile.
Storm overflows within 3 km
Nearest first, straight-line distance.We do not read the water company's overflow data here yet, so overflows within 3 km are not shown.