Thames Water has gone out to tender with an AMP8 contract for sewer mapping services worth approximately £7.2 million.
The water company is seeking to develop the mapped sewer network throughout Greater London and the Thames Valley area, in order to reduce blockages, internal and external floods and pollution.
Unmapped sewers lead to a delay in locating and attending blockages, floods and pollution, affecting local communities and the environment.
Thames Water’s aim is to map any unmapped sewer networks at scale, speed and accuracy, directly supporting the Pollution Incident Reduction Plan (PIRP) that Thames Water is working towards during AMP8.
The contract is being tendered in the following Lots:
Lot 1 - Aerial Mapping (£4,213,588 inc VAT)
- Capture of 2,484 km² across 71 Sewer Drainage Area Catchments (SDACs) using manned aircraft, delivering georeferenced 2D, oblique 2D, and 3D imagery with phased delivery by 2028
Lot 2 - Asset Detection (£1,628,593 inc VAT)
- Detection of manholes, gullies, rainwater downpipes, soil stacks, misconnections, and outfalls with confidence grading.
Lot 3 - Sewer Inferencing (£1,353,019 inc VAT)
- Semi-/automated inferencing of unmapped sewers, laterals, drains, rising mains, and selected SPSs, achieving ?80% accuracy.
Thames Water envisages that the contract will be awarded for an initial term of 4 years with options to extend by 2 years, up to a maximum overall ter m of 6 years. Current estimated start and end contract dates are 2 March 2026 to 28 February 2030, with a further possible extension option to 27 February 2032.
Additional purchases of aerial survey services may also be considered during the contract term
One supplier will be appointed for each Lot. Bidders may apply for multiple Lots, but Thames Water reserves the right to limit awards so that each bidder receives only one Lot, to ensure resilience and spread of risk.
Deadline for requests to participate is 10:00am on 3 October 2025. Thames Water expects to make its award decision in February 2026.
Thames Water is now inviting suppliers to register their interest in thesewer mapping procurement and provide the company name and contact details of two people from the supplier organisation with whom the water company can correspond.
Once the details have ben completed and submitted the nominated representatives will then be sent an invitation to access to Thames Water’s Project SharePoint site where they will have access to the Procurement Specific Questionnaire (PSQ) and related documents necessary to complete their initial submission.
Additional system access will then be provided for the next stage of the process for suppliers who successfully pass the PSQ stage.
Click here to access the online form to register your interest.
Barhale has completed work on two separate Rapid Action Taskforce Spills projects it is carrying out for Severn Trent.
Börger UK, which has firmly established itself as a leading pump brand since it was set up in Staffordshire in 2004, has moved into bigger, brand-new premises in Shrewsbury.
HUBER Technology UK & Ireland are inviting people to register for their March webinar where they will be providing information about HUBER water intake screens for municipal and industrial applications.
Sulzer has launched a new global Center of Excellence (CoE) for Water Treatment Solutions - the CoE consolidates Sulzer’s wastewater treatment expertise in a unified and global manner.
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.