Water
Precast Concrete » Sectors » Water » Water Products
Water Overview
At FLI Precast we specialise in the design, manufacture, and installation of our semi-precast solution for use in all types of water storage and treatment applications.
FLI Precast (Formerly Carlow Precast) developed the semi-precast DfMA concrete tank solution (the Carlow tank) in response to the challenging demands of the Water Industry.
FLI Precast’s semi-precast concrete system has been used in the design and manufacture of hundreds of rectangular and circular tank applications throughout the water sector in Ireland and the UK.
Simply put, we pour wet concrete against hard precast concrete. By designing in accordance with established codes and specifications we produce DfMA infrastructure using a modern approach to established technologies.
We can also deliver 100 year+ of design life without the introduction of unproven materials or construction techniques.
Water Products
Water Treatment Structures
FLI Precast design, manufacture and install various treatment structures including Flocculation, SBR, DAF, ASP, RGF, ASP, Inlet works, and many more. Our solutions can be designed to incorporate pipework, access, process, and other M&E equipment within our units.




Service Reservoir
Our Modular Pre-cast system used to build service reservoir structures can be tailored to suit any volume and footprint.
FLI Precast provides a Semi Precast DfMA solution for the construction of Service Reservoirs and Contact Tanks which is widely regarded as the go-to system for the storage of potable water.
Baffle Walls
FLI Precast design Baffle Wall systems which come in two different configurations. We offer a king post and plank system which can be fixed down to an existing base which enables a rapid installation and can be tailored to suit your project requirements. We also provide a Baffle system which can be incorporated into the base slab of a structure and enables the baffles to be load-bearing.




Contact Tanks
Our Modular Pre-cast system used to build service reservoir structures can be tailored to suit any volume and footprint.
FLI Precast provides a Semi Precast DfMA solution for the construction of Service Reservoirs and Contact Tanks which is widely regarded as the go-to system for the storage of potable water.
Concrete Spillways
FLI Precast provides concrete retaining walls that can be designed to suit your site-specific requirements and eliminate the requirement for the majority of in-situ concrete works.
We provide a full design service that enables us to incorporate details that can often be difficult to achieve on-site to suit EN & BS code.


Other Water Products FLI Precast provide
- Mixer and Blending Chambers
- PFET Structures
- Rapid Gravity Filters
- Granular Activated Carbon (GAC) Filters
- Dosing Chambers
- Inlet Structures
- Pumping Stations
- Process Chambers
- Valve Chamber
- Weir Walls
- Chlorination Structures
Related Projects
Testwood Water Supply Works
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.

Get a Quotation
