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Hanley Park lake does not contain harmful algae after 'further investigation'

By Jordan Edwards 23rd Jul 2025

Parts of the lake at Hanley Park are now completely green. (Nub News)
Parts of the lake at Hanley Park are now completely green. (Nub News)

Stoke-on-Trent City Council has confirmed the lake at Hanley Park has turned green due to duckweed and does not contain blue-green algae as previously suspected.

Yesterday (22 July) the city council said 'harmful' blue-green algae had been detected in the lake at Hanley Park but today 'further investigation' has revealed it is duckweed.

Duckweed is harmless to people and pets but as it has covered the entire lake, park users are being warned to take care not to fall into the lake as it may look like grass.

Stoke-on-Trent City Council said: "Following further investigation we've confirmed that the green layer on Hanley Park lake is duckweed, not blue-green algae.

"Duckweed is harmless to people and pets but has covered the entire lake - making it look like grass.

"This could be confusing for dogs and children who may mistake the lake surface for grass so please remember not to enter the water."

     

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