Following the identification of blue-green algae at Llandrindod Wells Lake in August 2021 and in Llangorse Lake in May 2021, sampling by Natural Resources Wales (NRW) has confirmed levels have now reduced at both sites.
Two consecutive weekly samples taken from the lakes are below the warning threshold. Therefore, NRW are now advising that the algae bloom has subsided.
Powys County Council have lifted all restrictions, that were temporarily put in place whilst the algae levels where high, and all water-based activities can now resume.
The build-up of blue-green algae in both lakes is a natural occurrence which occurs from time to time during warm conditions. It is always possible that a blue-green algae bloom may return. Members of the public are still advised to exercise caution where there are still signs of algae in the lake (such as discolouration).
To report any further signs of blue green algae, call Natural Resources Wales on 0300 065 3000.
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