Investigation into Solihull's 'blue lake' after 'mystery substance' fears

Coun Keith Green next to the stream
-Credit: (Image: Councillor Ken Hawkins)


A Solihull councillor has expressed relief that a suspected leak, which transformed a local park's lake into a "blue lagoon", seems to be non-toxic to its wildlife. However, the identity of the light blue substance found in the Monkspath lake remains a mystery.

The Local Democracy Reporting Service had covered the story about the water at Hillfield Park changing colour in early May. Councillor Ken Hawkins of Blythe ward initially feared for the park's inhabitants, including fish, ducklings, and herons.

Thankfully, Councillor Hawkins reported that there have been no adverse effects on the wildlife since the pollution was first spotted by him and colleague Councillor Keith Green. "As a daily visitor to the lake I have not noticed anything untoward and ducklings and goslings are thriving, as are the three herons on site," he remarked.

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Despite the good news, Councillor Hawkins is still troubled by the unknown nature of the light blue substance, which seems to originate from storm drains and flows into the lake via a brook. His concern is heightened by the fact that the lake had recently undergone expensive dredging work, reports Birmingham Live.

"Eighteen months ago we spent a lot of money dredging that lake, making it more sustainable," he explained, adding, "It is clearly someone's fault - I want to know who did this."

-Credit:Councillor Ken Hawkins
-Credit:Councillor Ken Hawkins

The Environment Agency (EA), Severn Trent Water (STW) and Solihull Council were all alerted to the incident, with the trio initiating a joint investigation. An EA spokesperson provided an update, stating: "We are continuing to work with STW to investigate the possible pollution incident into a watercourse in the Monkspath area of Solihull."

"Please report any pollution incidents to our hotline on 0800 807060."

Hillfield Nature Reserve, spanning two acres, is recognised with a Green Flag award, which is the benchmark international standard for publicly accessible parks.

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