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Hydrorock flood-defence technology installed in Wanstead

WVD-OCT-2025-floodDuring and after Hydrorock installation on Hermon Hill

Redbridge Council has expanded its use of Hydrorock flood-defence technology in Wanstead after a successful trial in Seven Kings.

Installed beneath the road that connects to the gullies, the Hydrorock blocks absorb rainwater and release it slowly into sewers, preventing surges. Since last year’s installation on Seven Kings High Road, the site has remained flood-free despite downpours.

The system was installed on Hermon Hill and Wellesley Road in June.

Sections of the road were also re-surfaced with permeable paving.

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Author: Editor