Sewer Mapping

A Tender Notice
by THAMES WATER UTILITIES LIMITED

Source
Find a Tender
Type
Framework (Services)
Duration
4 year
Value
£6M
Sector
ENVIRONMENT
Published
10 Sep 2025
Delivery
02 Mar 2026 to 28 Feb 2030
Deadline
n/a

Concepts

Location

Geochart for 1 buyers and 0 suppliers

1 buyer

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.

Lot Division

1 Aerial Mapping
  • Value: £4M

Capture of 2D, oblique 2D, and 3D georeferenced imagery for 2,484 km² across 71 Sewer Drainage Area Catchments (SDACs), phased delivery by 2028, conducted by manned aircraft.
2 Asset Detection
  • Value: £1M

Detection of manholes, rainwater downpipes, surface water outfalls, gullies, soil stacks, and misconnections, with confidence grading. £5m Product Liability will also be required,
3 Sewer Inferencing
  • Value: £1M

£5m Product Liability will also be required,

Renewal Options

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 term of 6 years. Additional purchases of aerial survey services may be considered during the contract term, subject to ITN specification.

Award Criteria

Technical Methodology, accuracy, delivery programme, innovation, sustainability, risk management.
Commercial Fixed-price, milestone-based pricing, efficiency proposals.

CPV Codes

  • 90491000 - Sewer survey services

Indicators

  • Restrictions apply to the lot award allocation.
  • Options are available.
  • Renewals are available.

Other Information

** PREVIEW NOTICE, please check Find a Tender for full details. **

Reference

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