Testwood Water Supply Works
FLI Precast assisted in the precast run-to-waste & backwash tanks design and installation.
Challenge
Work collaboratively alongside other contractors to design and manufacture to specific deadlines throughout the project.
Approach
As always, FLI Precast’s approach was to help keep pipework penetrations to a minimum and ensure efficiency on-site.
Solution
Working with our partners we able to bring all major pipework above ground and therefore reducing the need for large ancillary chambers.
Project Overview
Testwood Water Supply Works (WSW) is a critical surface water supply works within the Southern Water region, supplying 91 Ml/d to around 200,000 customers in Hampshire and the Isle of Wight.
FLI Precast assisted in the precast run-to-waste & backwash tanks design and installation.
To optimize the volume available within the given footprint on-site, a rectangular shape was preferable and was, therefore, a good candidate for modular precast concrete wall sections.
FLI Precast Ltd was engaged via Trant, and design progressed collaboratively. Keeping pipework penetrations to a minimum, and making them simple and linear minimised the amount of work required on site.
Space for the backwash tank was constrained and needed to fit logically into the overall plant process stream, there was a challenge to arrange the pipework in a way to maintain good access to all maintainable parts.
The final design brought all major pipework above ground thus reducing the need for large ancillary chambers.
Project Details
Location: Hampshire
Client: Southern Water
Services: Precast run-to-waste & backwash tanks
Duration: 44 weeks







