Sewer Mapping
Details
- Supplier(s)
- APEM Ltd, 1Spatial Group Ltd
- Value
- £11,992,000
- Duration
- 4 years
- Topic
- Sewer survey services
- Published
- 6 March 2026
- Source
- uk:find_a_tender
Tender description
Thames Water 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 Thames Water locating and attending blockages, floods and pollution, affecting local communities and the environment. The objective of FA2241 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. Lot 1 - Aerial Mapping: Capture of 2,484 km² across 71 Sewer Drainage Area Catchments (SDACs) using manned aircraft, delivering georeferenced 2D, oblique 2D, and 3D imagery. Lot 2 - Asset Detection: Detection of manholes, gullies, rainwater downpipes, soil stacks, misconnections, and outfalls with confidence grading. Lot 3 - Sewer Inferencing: Semi-/automated inferencing of unmapped sewers, laterals, drains, rising mains, and selected SPSs, achieving ?80% accuracy. ## Contract award Title: Sewer Mapping Lots: - Lot 3: Sewer Inferencing ## Contract award Title: Sewer Mapping Lots: - Lot 1: Aerial Mapping - Lot 2: Asset Detection
Timeline
- Completed: Award published6 March 2026Current notice
- Completed: Award date6 March 2026
- Next: Contract expiry date28 February 2030in 3 years
About the buyer
Thames Water Utilities Limited buys as a utility, through a Procurement Support Centre in Reading. Thames Water operates in a regulated industry, so becoming a supply partner follows a formal structure. Suppliers email the procurement team with the notice reference to take part in a tender. Suppliers can bid for water resources, demand management or leakage solutions through the Bid Assessment Framework. Innovative ideas can also be submitted through an online form.
Over the past 5 years, most of Thames Water Utilities Limited's contract awards have been in construction work, IT services and waste, cleaning and environmental services.
Decision makers
Connect with the people behind this procurement.
| Contact name | Job title | Phone number | Work email |
|---|---|---|---|
| Head of Procurement | +44 •••• •••••• | ••••••••@thames-water-utilities-limited.gov | |
| Commercial Director | +44 •••• •••••• | ••••••••@thames-water-utilities-limited.gov | |
| Procurement Manager | +44 •••• •••••• | ••••••••@thames-water-utilities-limited.gov | |
| Category Lead | +44 •••• •••••• | ••••••••@thames-water-utilities-limited.gov | |
| Senior Buyer | +44 •••• •••••• | ••••••••@thames-water-utilities-limited.gov | |
| Contracts Manager | +44 •••• •••••• | ••••••••@thames-water-utilities-limited.gov |
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