Northumbrian Water has gone out to tender with a contract for construction works at the Hanningfield Water Treatment Works in Essex worth an estimated £5.2 million.
The contract covers construction of a washwater tanks extension at the Hanningfield WTW which is located within Essex and Suffolk Water's Operating Region.
Northumbrian Water is looking to appoint a contractor to carry out the construction of 2 nº wash water tank and pumping station alongside the existing wash water tanks and pumping station.
Construction is scheduled to start in July 2018 with the aim of having the asset/works in use before January 2020 as this is a date agreed with the Environment Agency.
The existing tanks will remain in service and be incorporated in to the new works - the existing pumping station and tanks will be refurbished only once the new works is fully commissioned and in service.
The scope of works includes:
- Reduced level excavation for the wash water tanks and pumping station basement including the installation and removal of temporary works.
- Construction of two new concrete wash water tanks.
- Construction of new pumping station comprising of pump basement, interconnecting pipe work to the tanks and an above ground building to house the new MCC and beam crane.
- Pipe laying and manhole construction.
- Supply, installation and commissioning of all M&E equipment inc. pumps, pipework, valves, control systems, MCC, sub-station and new HV electricity supply.
- Construction of a new overflow structure at the emergency lagoon.
- The need to keep the current system running during the construction of the new works.
- ICA control — A fully automated PLC controlled process, with HMIs communicating back to the Central SCADA network.
Time limit for receipt of requests for documents or for accessing documents is 14th February 2018 and 21st February 2018 for receipt of tenders or requests to participate.
Click here to access the tender documentation
With the UK government demanding a 50% reduction in storm overflow spills by 2029, the era of reactive management is over. Speaking in the House of Commons on 21 July 2025, then environment secretary Steve Reed said, “This Government will cut water companies’ sewage pollution in half by the end of the decade.”
ERG, the leading supplier of odour control systems and industrial gas cleaning & thermal systems, has been awarded the coveted King’s Award for Enterprise.
Welsh Water’s new artificial intelligence-driven tool, ORAI, has been shortlisted for three categories at the prestigious British Data Awards 2026 – underscoring the company’s commitment to using cutting-edge technology to deliver better outcome for customers.
Barhale has completed work on two separate Rapid Action Taskforce Spills projects it is carrying out for Severn Trent.
Hear how Scottish Water has completed its £235 million Ayrshire Glasgow Resilience Project - customers across Greater Glasgow, Ayrshire and East Renfrewshire will now benefit from a more secure and resilient water supply.
Hear how United Utilities is accelerating its investment to reduce spills from storm overflows across the Northwest.
Find out more about the remarkable career opportunities on offer at WSP - scroll down to watch the inspirational video.