Southern Water Services

Does the core business genuinely avoid or reduce emissions, or build climate resilience? Share of revenue that is actually 'green'. Fossil-dependent models score low.

Water utilities are inherently energy-intensive and process-emitting; Southern Water's 2024 net operational emissions were 229.9 ktCO2e (flat year-on-year vs 229.8 ktCO2e in 2023), and while the company is investing £1.1bn in storm overflow reduction and nature-based solutions under its PR24 determination, its core operations remain a meaningful emissions source with no demonstrated near-term absolute reduction trajectory.

Credible, science-based targets (SBTi), a real net-zero plan with progress to date, and CDP disclosure — not just a dated press release.

Southern Water's only public climate commitment is a 2050 net-zero goal aligned with UK government targets, with no independently SBTi-validated near-term or long-term targets; the company explicitly states it will not purchase external offsets but provides no science-based interim milestones, no CDP-disclosed validated pathway, and no evidence of SBTi commitment or submission.

Operational footprint, labour and social practices, and governance quality across the company's own operations and supply chain.

ESG profile is severely compromised: the Environment Agency found 'very serious widespread criminality' in the 2021 prosecution, the company has a documented history of deliberately misreporting performance to regulators (£126m Ofwat penalty in 2019), market-based emissions jumped from 117.9 to 281.2 ktCO2e year-on-year, and while Macquarie has injected over £1.6bn in equity since 2020 and shareholders are forgoing dividends to 2030, labour and social governance culture concerns from the pre-2021 era are only slowly being remediated.

Quality of disclosure, independent third-party verification, and how much hard data backs the company's claims.

Southern Water publishes annual carbon emissions data broken down by operational and embedded scopes, issues a Sustainable Finance Impact Report, and provides regulatory performance disclosures; however, the net-zero plan lacks quantified interim milestones or third-party verification, there is no confirmed CDP submission score, and market-based emissions methodology changes make year-on-year comparisons unreliable.

Controversies, litigation, pollution, fossil-fuel lobbying, conflict-zone involvement and governance scandals. Higher means cleaner.

Southern Water received the largest-ever UK water sector criminal fine (£90m, 2021) for deliberate illegal sewage dumping 7,000 times over five years, with court evidence of institutional concealment of evidence from regulators; a prior £126m Ofwat penalty in 2019 for deliberate misreporting; and ongoing criminal investigations into more recent spills — representing one of the most severe and repeated environmental integrity failures in the UK utility sector.