Water company performance report 2024-25

Key Take Aways

• The water sector has shown mixed performance across various metrics, reflecting both areas of progress and shortfalls in the 2020-25 period.
• Sector-wide reductions include leakage (43% since privatisation), sewer collapses (36%), internal sewer flooding (29%), and improvements in water quality compliance (34%). However, pollution incidents increased by 27% over the period.
• Customer satisfaction scores have declined annually since measurement inception in 2020-21, now at their lowest in five years.
• The sector committed to significant reductions, such as a 41% drop in sewer flooding incidents and a 30% decrease in pollution incidents, but performance has fallen short of targets.
• There is a notable increase in households in arrears (to over 2.85 million) and total debt (£2.12 billion), with some companies experiencing substantial rises.
• Capacity investment, notably the £104 billion allocated for 2025-30, positions the sector for substantial upgrade; however, past overspent expenditure allowances point to delivery challenges.
• Water companies overspent their total expenditure allowances by 17% over the period, driven mainly by base costs linked to asset maintenance and inflationary pressures.
• Leakage reduction remains a key focus, but the sector achieved just a 9% reduction instead of the initial 16% target, with lower improvement rates in recent years.
• Asset health is under increased scrutiny, with ongoing initiatives to improve understanding of sewer, water, and wastewater infrastructure conditions.
• Enforcement actions have been significant, with over £240 million secured in redress for environmental breaches, notably storm overflow management and pollution control.
• Environmental performance assessments reveal declining ratings, with only one company rated as highly as 4 stars. Pollution incidents and storm overflow discharges remain concerns.
• The sector faces substantial regulatory and financial pressures to deliver on ambitious environmental and service commitments, requiring proactive leadership and targeted investment.

Key Statistics

• Leakage has been reduced by 43% since privatisation; the target for 2020-25 was a 16% reduction.
• Pollution incidents increased by 27% over the five-year period, with some companies reporting significant deterioration (up to 186% increase at Wessex Water).
• 99.97% compliance with drinking water standards in England and Wales during 2024, a near-record achievement.
• 12 companies met the internal sewer flooding commitment in 2024-25, with notable improvements of over 70% for Northumbrian Water and South West Water.
• Water supply interruptions averaged 10 hours per property in 2024-25, with some companies exceeding acceptable levels and long-duration outages being a concern.
• Houses in arrears rose to 2.85 million households, with total debt above £2.12 billion; households in arrears on debt repayment plans increased to 33%.
• The total sector overspent its total expenditure allowances by 17%, with base costs accounting for the majority of overspend.
• Wastewater expenditure exceeded allowances by 34% in 2024-25; Southern Water overspent by 53%, particularly on asset maintenance.
• Investment in smart meters aims for 10.4 million installations by 2030, supported by £1.7 billion enhancement funding.
• Only 53% of companies provided verification of embedded greenhouse gas emissions reporting; progress needed for accuracy and transparency.
• The Environmental Performance Assessment (EPA) rating declined to 19 stars, with only one company rated at 4 stars.
• Enforcement actions led to over £240 million in redress and penalties for environmental breaches, notably storm overflow spills.

Key Discussion Points

• The sector’s performance remains inconsistent, highlighting the need for more proactive leadership to meet long-term environmental and service commitments.
• Despite significant reductions in leakage and sewer collapses, pollution incidents and storm overflow discharges have increased, raising environmental concerns.
• Circular financial pressures, including overspending on operational and enhancement costs, threaten the delivery of ambitious future investment programmes.
• Customer satisfaction decline signals a need to reorient focus toward service quality, communication, and responsiveness, particularly for vulnerable groups.
• The rising arrears and debt levels reflect affordability challenges exacerbated by inflation, which are compounded by uneven performance across companies.
• Proactive asset management and infrastructure resilience are central to reducing incident rates and improving long-term asset health.
• Enforcement actions and redress payments underscore regulatory firmness in addressing failures in environmental compliance and operational resilience.
• The sector’s environmental ratings decline and pollution incident figures suggest that more effective pollution mitigation strategies remain urgent priorities.
• The transition to net zero, facilitated by a recognised £501.4 million challenge fund, aims to mitigate carbon emissions, but operational emissions remain a significant focus area.
• Open data initiatives and sector collaboration point towards a more transparent and innovative operating environment, though further progress on data quality and reporting verification is essential.
• The UK’s upcoming regulatory reforms present both risks and opportunities for sector restructuring and enhanced accountability through a more supervisory approach.
• Investment governance must align with delivery limitations, demonstrating a clear pathway from planning to execution to avoid previous overspending and underperformance.

Document Description

This article is a comprehensive sector performance review for the UK water sector in 2024-25, covering operational, environmental, financial, and social metrics. It provides detailed analysis of company performance, regulatory interventions, environmental impacts, and future funding commitments. The report underscores sector challenges in environmental compliance, service reliability, affordability, and investment delivery, while highlighting regulatory efforts to drive sector resilience and transparency. Designed for senior executives in financial services, the article offers necessity-driven insights into infrastructural commitments, financial implications of overspending, regulatory risks, and the importance of proactive leadership in managing environmental and social risks associated with the water sector.