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Costain JV wins £65m Southern Water projects

Costain Southern Water
Aerial view of a Southern Water water treatment works

The CMDP joint venture between Costain and MWH Treatment has secured improvement contracts worth £65m from Southern Water.

The work will improve water supply resilience and upgrade wastewater treatment works at Testwood near Southampton, and Burham, Kent. The investment is part of Southern Water’s seventh asset management period (AMP7).

Testwood Water Supply Works will be refurbished. Improvements will be made to abstraction points from the River Test, pumping stations, and flow and filtration assets. Rapid gravity filtration facilities will be upgraded and contact reservoir tanks repurposed.

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