
Water & Wastewater

Wastewater Sewer Works
Wastewater Modular Treatment Plants
Water Infrastructure
MEI

Our range of Water & Wastewater services includes:
Design consulting and process engineering
Advanced water designs
Specialists in MEICA and process design/engineering
Consulting services
Design and engineering
Temporary works design
Digital engineering
Building Information Modelling (BIM)
Non-infrastructure – treatment system solutions
New builds, refurbishment, and upgrades
New build reservoirs and Pumping stations
Tanks, including raw water storage, primary contact, filtration, settlement
Storage tanks and mixers
Dual contained pipework and chemical dosing systems
Aeration, primary, secondary and tertiary treatment plants
SAF, iSAF & Anoxic SAF Biological wastewater treatment
Electrical installations, instrumentation control and automation
Modular hire solutions
Treatment technology process solutions – modular
Design, development, manufacturing, selection of temporary and permanent wastewater treatment systems.
Full civil, mechanical and electrical installation
Maintenance of existing assets
Product supply for primary and secondary solids removal, phosphorus removal and biological treatment
Mechanical, electrical and instrumentation solutions
Project management and design (HV & LV)
Commissioning and protection testing
Full commissioning of HV installations
NICEIC approved contractor for hazardous and non-hazardous areas
Electrical design to BS7671
Cable installation – power, controls, and communications
Inspection and testing capabilities
Design and manufacture of LV control panels
Infrastructure – pipelines, developer and network services
Civils work
Traffic management and streetworks
Pipelines
Mains Renovation
Slip lining
Service replacements
Developer Services (WIRS)
Large scale new connections and commercial supply
Flood defence, harbour and pier, surface water management Flood Defence
Construction of flood defence
Earthworks embankment
Pumping station installation
Flood gate installation
Dredging and dredge deepening
Foreshore reclamation
Seawall construction
Surface water management ponds and channels
SUDs and Swales construction

We offer proven expertise in both framework delivery and bespoke project solutions.
Our extensive national network of offices and depots ensures reliable, responsive service wherever it’s needed.

OCU is a water infrastructure service provider, safely delivering innovative and reliable solutions. We offer consultation, design, build and maintenance support for our water clients across the UK & Ireland.
From potable and raw water systems to sewer risings mains, sewer replacement, refurbishment and more, we work closely with treatment facilities, water and wastewater networks.
Our two decades of experience in the water industry has established our reputation for delivering the full spectrum of water and wastewater treatment projects.










