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Sewer Mapping

THAMES WATER UTILITIES LIMITED

This public procurement record has 2 releases in its history.

Award

06 Mar 2026 at 10:21

UK6 - Contract Award Notice
Tender

10 Sep 2025 at 15:10

UK4 - Tender Notice
Summary of the contracting process

Thames Water Utilities Limited, based in Reading, has concluded the procurement process for enhancing its sewer network mapping across Greater London and the Thames Valley. The contract titled 'Sewer Mapping' aims to address blockages, floods, and pollution by mapping unmapped sewer networks to support the Pollution Incident Reduction Plan (PIRP) during AMP8. The competitive flexible procedure has seen awards to suppliers including 1Spatial and APEM Limited, focusing on various aspects, such as aerial mapping, asset detection, and sewer inferencing. The procurement phase transitioned from 'tender' to 'award', with the contract scheduled to commence on 19 March 2026, lasting until 28 February 2030, with potential extensions up to 2032.

This contract presents substantial opportunities for businesses specialising in sewer mapping, asset detection, and georeferenced imagery, offering a structured framework agreement with provisions for further purchases. SMEs with technical experience in these areas, particularly those capable of delivering high accuracy in detection and mapping, may find significant growth potential by engaging in this contract. Companies that successfully demonstrate innovation, sustainability, and efficient risk management within the competitive procedure could secure a vital role in supporting a large-scale infrastructure project designed to benefit local communities and the environment. The procurement strategy ensures resilience by spreading risk among successful bidders appointed for specific lots, promoting a collaborative approach to addressing environmental challenges.

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Notice Information

Notice Title

Sewer Mapping

Notice 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 Information

Aerial Mapping

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.

Options: The full scope of the services to be provided and any options that may be considered throughout the term of the agreement, is set out in the Specification issued within the Invitation to Negotiate (ITN) document.

Renewal: 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.

Asset Detection

Detection of manholes, rainwater downpipes, surface water outfalls, gullies, soil stacks, and misconnections, with confidence grading. PS5m Product Liability will also be required,

Options: The full scope of the services to be provided and any options that may be considered throughout the term of the agreement, is set out in the Specification issued within the Invitation to Negotiate (ITN) document.

Renewal: 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.

Sewer Inferencing

Lot 3 - Sewer Inferencing: Semi-/automated inferencing of unmapped sewers, laterals, drains, rising mains, and selected SPSs, achieving >=80% accuracy. PS5m Product Liability will also be required,

Options: The full scope of the services to be provided and any options that may be considered throughout the term of the agreement, is set out in the Specification issued within the Invitation to Negotiate (ITN) document.

Renewal: 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.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-0597b6
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/020240-2026
Current Stage
Award
All Stages
Tender, Award

Procurement Classification

Notice Type
UK6 - Contract Award Notice
Procurement Type
Framework
Procurement Category
Services
Procurement Method
Selective
Procurement Method Details
Competitive flexible procedure
Tender Suitability
SME
Awardee Scale
Large, SME

Common Procurement Vocabulary (CPV)

CPV Divisions

90 - Sewage, refuse, cleaning and environmental services

CPV Codes

90491000 - Sewer survey services

Notice Value(s)

Tender Value
£5,996,000 £1M-£10M
Lots Value
£5,996,000 £1M-£10M
Awards Value
£5,996,000 £1M-£10M
Contracts Value
Not specified

Notice Dates

Publication Date
6 Mar 20265 months ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
6 Mar 20265 months ago
Contract Period
19 Mar 2026 - 28 Feb 2030 3-4 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Pending
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
THAMES WATER UTILITIES LIMITED
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
READING
Postcode
RG1 8DB
Postcode Area
Reading
Country
England
Major Region (ITL 1)
TLJ South East (England)
Basic Region (ITL 2)
TLJ1 Berkshire, Buckinghamshire and Oxfordshire
Small Region (ITL 3)
TLJ16 Berkshire West
Delivery Location
Not specified
Local Authority
Reading
Electoral Ward
Thames
Westminster Constituency
Reading Central

Supplier Information

Number of Suppliers
2
Supplier Names

1SPATIAL GROUP LIMITED

APEM LIMITED

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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