Water-only company supplying 2.3 million customers across Kent, Sussex, Surrey and Hampshire, owned by a consortium managed by Hastings Infrastructure including Utilities Trust of Australia (50%), Desjardins (25%) and NatWest pension fund (25%).
Why it's on ClimateTicker
South East Water (UK) is a monopoly drinking water utility whose climate relevance is primarily defensive — it faces acute physical climate risk from drought and flooding in the water-stressed south-east of England, and has committed to operational net zero by 2030. However, its targets lack SBTi validation, independent third-party carbon verification is thin, and a proposed £22.5m Ofwat fine (March 2026) for repeated supply failures reveals governance and resilience shortfalls that directly undercut its climate-adaptation narrative.
Commitments & Certifications
Controversy & Greenwashing Watch
Ofwat proposed an £22.46m penalty (8% of turnover) in March 2026 after finding South East Water failed to maintain supply resilience, affecting 286,000+ customers; the company challenged the fine via judicial review but the injunction request was rejected.source ↗
Ofwat launched a new investigation into South East Water's supply interruptions in November–December 2025 and January 2026, examining compliance with its customer-focused licence condition introduced in February 2024.source ↗
Ofwat's quality and ambition assessment initially placed South East Water's PR24 business plan in the 'lacking ambition' category, imposing a QAA penalty that was only removed after the company revised its submission.source ↗
South East Water was among companies ordered to make underperformance payments to customers in 2023–24, having moved only from 'lagging' to 'average' in Ofwat's annual sector performance assessment.source ↗
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