Project Update 16/04/2026

Hello everyone,

We hope you’re well.

Following our last update in January, we wanted to share how construction at Horsley Water Treatment Works has continued to progress as part of the ongoing upgrade works.

Since January, work on the new chlorine contact tank has moved through several key stages.

Inside the tank, all of the pre‑cast concrete baffle walls that form the internal layout are now fully installed. Securing and sealing works are continuing, alongside the installation of reinforcement and formwork in readiness for the next phases of concrete construction.

Significant progress has also been made on the main tank structure itself. The first major concrete base pours have now been successfully completed, providing a key foundation for the tank walls. Preparation works for the remaining wall pours are ongoing, and the overall shape and scale of the new tank are now clearly visible within the site.

Alongside the tank construction, work associated with the Granular Activated Carbon (GAC) filters and pumping infrastructure has continued as part of the wider upgrade.

Pipework installation for the current phase has now been completed, with associated concrete support structures progressing beneath pipework and valves. These works are being carefully managed and coordinated to ensure water quality is protected at all times while construction continues.

Construction of the new outlet flowmeter chamber has also begun in recent weeks. Excavation works have been completed, and a blinding layer has been installed at the base of the excavation to prepare the ground for the next stage of construction.

Thank you for your continued patience and understanding while work progresses. We’ll continue to share updates here as the project moves forward.

The Project Team