UK's largest water-only company by revenue and population, supplying drinking water to 3.9 million people across the London commuter belt, east and south-east England; owned by Allianz Capital Partners (36.6%), HICL Infrastructure (36.6%) and DIF (26.8%).
Why it's on ClimateTicker
Affinity Water is the UK's largest water-only company and operates in a sector intrinsically tied to climate adaptation — managing groundwater abstraction, drought resilience, leakage reduction, and catchment protection in a water-stressed region. Its core business provides genuine adaptation value, but it is not a net emissions reducer: it is an energy-intensive utility with significant Scope 2 and Scope 3 footprints and no SBTi-validated targets. Investors should weight its adaptation role positively but apply scrutiny to unvalidated net-zero claims and a recent regulator-imposed penalty for environmental underperformance.
Commitments & Certifications
Controversy & Greenwashing Watch
Ofwat's own PR24 final determination acknowledged that Affinity Water's large 2025-30 capital programme may slightly increase operational greenhouse gas emissions, and instructed the company to limit the increase to under 6% above 2023-24 levels.source ↗
In October 2024, Ofwat deducted £5.2 million from Affinity Water as part of a £157.6 million sector-wide penalty for 2023-24 underperformance, specifically citing failures on pollution incident reduction, leakage control, and supply reliability.source ↗
Ofwat applied ODI penalties of £1.06 million to Affinity Water in 2022-23 for underperformance in customer experience metrics, contributing to a sector-wide decline in satisfaction scores.source ↗
Affinity Water's leakage outperformance payments were deferred due to material non-compliance with reporting methodology, raising questions about the accuracy of its environmental performance data.source ↗
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