What Affinity Water does

Affinity Water is a privately-held, regulated regional water utility headquartered in Hatfield, United Kingdom. Founded in 2012, the company serves residential households, commercial properties, and industrial customers across Southeast England under an Ofwat-licensed monopoly franchise, distributing treated water through its pipe network infrastructure. The firm reports a daily treatment capacity of 644 million litres on peak demand days and employs between 1,001 and 5,000 staff. Customers are assigned based on geographic service area and billed directly for water supply, with no alternative provider choice available within the regulated territory.

The company's operational portfolio extends beyond core water supply into infrastructure technology and large-scale strategic resource schemes. It has deployed Distributed Acoustic Sensing (DAS) technology across 650 kilometres of water pipes in five locations through a pilot partnership with Openreach and Lightsonic, leveraging machine learning algorithms to identify acoustic signatures of leaks and distinguish them from background noise, detecting over 100 leaks and preventing two megalitres of water loss per day. Affinity Water is also a partner in two multi-billion-pound regional water infrastructure projects: the £5.7–7 billion White Horse Reservoir in Oxfordshire with Thames Water and Southern Water (targeting operations around 2040 to address a forecast 2+ billion litre/day deficit by 2055), and the Grand Union Canal Transfer scheme with Severn Trent and Canal & River Trust, capable of transferring up to 115 million litres of advanced-treated recycled water per day from Birmingham to the southeast.

Affinity Water generates revenue through subscription-style recurring charges to customers within its regulated service territory. In April 2026, the company implemented a 13% price increase, adding approximately £33 to the average household's annual bill, operating under Ofwat regulatory pricing determination rather than commercial market pricing. Go-to-market is direct-to-utility-customer by geographic assignment, with no traditional sales motion. The leadership team is currently led by Stuart Ledger as interim Chief Executive Officer, with Mike Pocock serving as Asset Strategy Director overseeing the company's infrastructure and resource investment pipeline.

Name

Affinity Water

Legal name

Affinity Water

Website

https://www.affinitywater.co.uk/

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Affinity Water is a UK regulated regional water monopoly supplying treated water to residential, commercial, and industrial customers across Southeast England under Ofwat, while investing in fiber-optic leak detection technology and multi-billion-pound resource infrastructure projects.

Ownership category

akta.pro rank

Product category

Water Utility Services

NAICS

Water Supply and Irrigation Systems (22131), Water, Sewage and Other Systems (2213), Water Supply and Irrigation Systems (221310)

SIC

Water Supply (4941), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Water Sourcing & Abstraction (Surface Water, Groundwater, Intake Works) (EUANAAAA)

akta.pro secondary industries

Active Leak Detection & Acoustic Surveying (Ground Mics, Correlators, Hydrophones) (EUANAKAA), Water & Wastewater Utility IoT (SCADA, Leak/Quality Monitoring) (EUADAPAK), Intake/Outfall & Raw Water Abstraction Works (River/Sea Intakes, Outfalls) (IMAFAGAI), Water Resources, WASH & Integrated Water Management (BPADALAH)

Keywords

• Water utility services
• Water supply
• Leak detection
• Water infrastructure
• Potable water treatment

Headquarters

HQ city

Hatfield

HQ country

United Kingdom

HQ region

Europe

Markets served

GTM type

B2C

Offering type

Services

Cost components

Operations, Infrastructure, Personnel, Technology or R&D, Supply Chain

Revenue model

1. Water Supply Services: Revenue generated from supplying treated water to residential and commercial customers within the regulated service area. Customers are billed directly based on usage or fixed charges. Price increases of 13% were implemented in April 2026.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Affinity Water is a regulated UK water utility that supplies treated potable water to residential households and commercial customers across Southeast England through its pipe network infrastructure. The company also operates advanced leak detection programs using Distributed Acoustic Sensing (DAS) technology over fibre optic cables, and participates in large-scale water infrastructure projects including the Grand Union Canal Transfer scheme and the White Horse Reservoir partnership.

Product overview

Affinity Water is a water utility company providing water supply services. Its service portfolio includes core water supply operations, fiber optic-based leak detection technology (using Distributed Acoustic Sensing with Lightsonic), and major water infrastructure projects including the Grand Union Canal Transfer (GUCT) scheme and the White Horse Reservoir partnership. The company also offers infrastructure services related to water network monitoring and conservation.

Differentiator

Problem solved

Functional benefit

Products and services

• Water Supply Services
• Fiber Optic Leak Detection Service
• Grand Union Canal Transfer (GUCT) Scheme
• White Horse Reservoir Partnership

Quantifiable outcome

• Prevented loss of 2 million litres of water per day through fiber optic leak detection
• +2 more outcomes

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature2 records

Partnerships

Six partnerships are on record, tiered core.

• OpenreachcoreTechnology or Integration · 1 March 2026Openreach partnered with Affinity Water and Lightsonic to trial Distributed Acoustic Sensing (DAS) technology that converts fibre optic broadband cables into leak detection sensors. The three-month pilot across 650 km of water pipes in five locations detected over 100 leaks and prevented 2 million litres of water loss daily. The technology enables continuous 24/7 monitoring without digging by utilizing existing fibre infrastructure.
• LightsoniccoreTechnology or IntegrationTechnology developer providing Distributed Acoustic Sensing (DAS) technology that analyzes changes in light beams through fibre optic cables caused by underground vibrations to detect water leaks. The company collaborated with Openreach and Affinity Water on a successful pilot demonstrating the technology's effectiveness in identifying leaks using machine learning.
• Thames WatercoreStrategic or Co-development PartnerJoint development partnership for the White Horse Reservoir project, a £5.7-7 billion infrastructure investment in Oxfordshire. The 150 billion litre reservoir will supply water to Thames Water, Southern Water, and Affinity Water customers, with water expected from 2040. The partnership addresses a forecast water supply deficit of more than 2 billion litres per day in southeast England by 2055. Thames Water is seeking the main contractor for the project.
• Southern WatercoreStrategic or Co-development PartnerJoint development partnership for the White Horse Reservoir project alongside Thames Water and Affinity Water. The reservoir will address water supply deficits in southeast England, with Southern Water receiving water supplies upon the project's 2040 completion.
• Severn TrentcoreStrategic or Co-development PartnerPartnership with Severn Trent and Canal & River Trust to develop the Grand Union Canal Transfer (GUCT) scheme, a major water recycling and transfer project. The project will transfer up to 115 million litres of advanced-treated recycled water per day from the Minworth Wastewater Recycling Centre near Birmingham through canals to water-stressed regions in the South East. Currently in Phase Two Public Consultation. Part of England's Strategic Resource Options for water supply resilience.
• Canal & River TrustcoreStrategic or Co-development PartnerPartnership with Affinity Water and Severn Trent for the Grand Union Canal Transfer (GUCT) scheme, utilizing canal infrastructure to transfer advanced-treated recycled water. The charity maintains the canal network and is a key partner in enabling water transfer through existing canal infrastructure from Birmingham to water-stressed South East regions.

Scale indicators6 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Northumbrian Water: Regulated water and wastewater utility serving Northeast England; comparable business model under Ofwat framework and similar leakage reduction imperatives.
• United Utilities: Largest listed UK water and wastewater company serving the North West; comparable regulated monopoly model with similar Ofwat regulatory dynamics and large-scale capex programmes.
• Thames Water: Largest UK water and wastewater utility serving London and Thames Valley; directly comparable as a regulated regional water monopoly and Affinity's partner on the White Horse Reservoir project.
• Severn Trent: Major UK regulated water and wastewater utility; comparable business model and co-partner on the Grand Union Canal Transfer scheme with Affinity.
• Southern Water: Regulated water and wastewater utility serving Southeast England including Hampshire, Sussex, and Kent; directly comparable geography, regulatory framework, and co-partner on White Horse Reservoir.
• Dwr Cymru Welsh Water: Not-for-profit regulated water and wastewater utility serving Wales and parts of England; comparable regulatory structure and water network operations under Ofwat oversight.
• Anglian Water: Largest geographic UK water utility by area served; comparable regulated water supply model focused on water-stressed eastern and southern England.

Regional players

• Sutton and East Surrey Water (SES Water): Smaller regulated water-only utility serving parts of Surrey, Kent, and South London; comparable water supply model and overlapping Southeast England territory with Affinity.

Emerging players

• Gutermann: Specialist in acoustic leak detection technology for water networks; comparable technology overlap with Affinity's DAS leak detection programme and adjacent B2B proposition to water utilities globally.

Broad incumbents

• Pure Technologies (Xylem): Xylem-owned specialist in water pipeline condition assessment and leak detection including acoustic and fibre-optic sensing; comparable technology category and target customer base of water utilities like Affinity.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• Xx.com/affinitywater

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Affinity Water