There is a lot of debate about whether or not the water industry should be (re-)nationalised, and what that might cost. Rather vocal in the current debate is Feargal Sharkey, who proposes a mechanism through which it might be nationalised at zero cost.
So, with the help of ChatGPT, here is an analysis/critique of his proposal.

1. The strongest part of Sharkey’s argument: regulatory value is not the same as market value

The Government’s estimated cost of nationalisation uses Regulatory Capital Value (RCV) as a proxy for the value of the industry. Defra estimates the cost at around £100 billion because it includes both the value of equity and the assumption of existing debt liabilities.

Sharkey’s criticism is that RCV is a regulatory accounting construct, not a freely traded market valuation. This is a legitimate point.

A company’s economic value should ultimately reflect:

• the expected future cash flows;
• the risks faced by investors;
• the condition of its assets;
• its future investment requirements; and
• its liabilities.

If a company has poor performance, high debt and large future obligations, its equity value may indeed be substantially below its regulated asset value.

This distinction is important. For example, a house may have a theoretical market value of £500,000, but if it requires £400,000 of essential repairs and has a large mortgage, the owner’s equity may be much smaller.

Confidence: 0.9

2. Where the argument becomes more complicated: debt does not disappear

The more difficult part is the suggestion that companies could simply fail and be acquired cheaply.

A water company is not like an ordinary failed business because:

• it provides an essential public service;
• its assets cannot realistically be abandoned;
• continuity of supply must be maintained;
• creditors have legal rights.

If a company enters insolvency or a special administration regime, the Government cannot simply ignore creditors. The treatment of debt would depend on the legal process and the priority of different claims.

Defra’s position is that the nationalisation cost estimate includes debt because creditors could require compensation or repayment, and because government would ultimately need to deal with those liabilities.

However, Sharkey’s counterargument is that investors knowingly accepted risks associated with highly leveraged companies. If a business fails, shareholders normally bear losses first and creditors may also face losses depending on circumstances.

That principle is central to modern capitalism: investors receive returns because they accept risk.

Confidence: 0.85

3. The key question: are water companies actually insolvent?

This is where the debate becomes technical.

A company can have:

• a positive regulatory asset value;
• substantial physical assets;
• large debts;
• weak profitability; and
• poor equity value,

without being legally insolvent.

The water industry was deliberately designed around regulated monopoly companies financed partly through borrowing. Debt itself is not necessarily evidence of failure.

The issue is whether:

• debt levels are sustainable;
• investors have received excessive returns relative to risk;
• companies can finance required investment;
• customers are being asked to pay twice: once through bills and again through government support.

The current difficulties at Thames Water illustrate this tension: the company has a very large debt burden, but the solution involves restructuring options rather than simply treating the company as worthless.

Confidence: 0.85

4. Would the “let it fail and buy cheaply” approach work?

There are three possible outcomes.

Scenario A — Sharkey is broadly right

Government allows a company to fail.

• Equity investors lose their investment.
• Some creditors take losses.
• Government acquires the operating company at a low cost.
• The public takes responsibility only for future investment.

This is similar to “bail-in” approaches used in banking regulation.

Potential benefit:

• taxpayers do not reward poor financial decisions.

Risk:

• uncertainty could damage investor confidence in UK infrastructure.

Scenario B — The Government still ends up paying much of the cost

A government cannot allow water services to fail.

It may have to:

• guarantee borrowing;
• maintain operations;
• compensate certain creditors;
• fund urgent infrastructure repairs.

The apparent saving may therefore be smaller than expected.

Scenario C — A negotiated restructuring

A middle route could involve:

• debt restructuring;
• conversion of debt into equity;
• stronger public control;
• revised regulation;
• new investment obligations.

This may achieve many benefits of public ownership without requiring immediate purchase of the entire sector.

5. How this affects your article

For a balanced article, I would avoid presenting Sharkey’s argument as either “the solution” or “wrong”. A more defensible formulation would be:

“Some commentators argue that the cost of nationalisation has been overstated because it assumes acquisition at regulatory asset values rather than market values. They contend that financially weak companies could instead be restructured through insolvency or special administration processes, allowing public ownership at a lower cost. Critics respond that essential water services cannot be allowed to fail, and that government would ultimately remain responsible for maintaining services, managing debt and funding investment.”

That wording recognises the legitimate economic argument while avoiding an ideological position.

My overall assessment:

The deeper lesson is that the nationalisation debate is partly a debate about who should bear the cost of past decisions: shareholders, creditors, customers or taxpayers. That framing is more analytically useful than simply asking “public or private ownership?”

The water industry in England and Wales stands at a critical point in its history. Public confidence has fallen to unprecedented levels, fuelled by concerns over pollution, ageing infrastructure, executive remuneration, financial resilience and regulatory effectiveness. At the same time, water companies face genuine and growing pressures from climate change, population growth, stricter environmental expectations and the need to renew assets that, in many cases, date back to the Victorian era.

The debate is often polarised. Some argue that the industry is fundamentally broken and should be returned to public ownership. Others contend that privatisation has delivered substantial improvements but that regulation has failed to keep pace with changing expectations. Neither position fully captures the complexity of the situation.

A balanced assessment requires consideration of the historical context, the evidence on performance, the causes of current problems and the options for reform.

A Brief History

Until 1974, water supply and sewerage services in England and Wales were provided by more than 1,300 separate organisations, including local authorities, statutory water companies and river authorities. Standards and investment varied considerably between regions, and there was little strategic management of water resources across river catchments.

The Water Act 1973 fundamentally reorganised the sector. From 1 April 1974, responsibility for water supply, sewerage and river management was transferred to ten Regional Water Authorities (RWAs). These publicly owned bodies integrated water supply, wastewater treatment, pollution control and river management on a catchment basis. The objective was to improve efficiency, facilitate long-term planning and enable larger-scale investment.

The Regional Water Authorities achieved a number of important successes. They initiated the first (albeit weak) attempts at integrated catchment management, expanded wastewater treatment, improved drinking water supplies and established technical expertise that continues to influence the industry today. However, by the 1980s they faced mounting financial pressures. Capital investment depended on annual public expenditure allocations determined by central government, meaning investment competed directly with health, education, housing and transport spending.

Throughout the late 1970s and early 1980s, successive governments sought to restrain public borrowing. As a consequence, many planned infrastructure projects were delayed or scaled back despite growing maintenance needs. By the time of privatisation in 1989, many water and sewerage assets—including extensive Victorian water mains and combined sewer systems—were already approaching or exceeding their intended design life. Significant investment was also required to meet increasingly demanding European drinking water and environmental standards.

When the ten Water and Sewerage Companies were privatised under the Water Act 1989, they entered the private sector debt-free. The Government wrote off approximately £5 billion of debt, injected around £1.5 billion of public capital and provided a further financial adjustment, commonly referred to as the “green dowry”, worth approximately £1.6 billion, to improve the companies’ financial viability and attract private investment. In return, the new regulatory framework was designed to ensure that future infrastructure investment would be financed largely through private capital rather than public expenditure.

The subsequent regulatory model divided responsibilities between independent bodies. Ofwat became responsible for economic regulation and customer pricing, the National Rivers Authority (whose functions later transferred to the Environment Agency) regulated environmental protection, and the Drinking Water Inspectorate oversaw drinking water quality. This framework sought to combine private investment with independent regulation in the public interest.

The historical record suggests that neither public ownership nor private ownership has been without shortcomings. Public ownership provided strong technical integration and strategic planning but often struggled to secure sufficient long-term capital because investment depended on wider government spending priorities. Private ownership greatly increased access to investment finance and accelerated infrastructure improvements, but over time concerns have emerged regarding financial structures, regulatory effectiveness, environmental performance and public accountability. The central challenge has therefore been less about ownership itself than about creating governance and regulatory arrangements capable of delivering sustained investment, environmental stewardship and public confidence over many decades.

Why Public Confidence Has Fallen

Despite these achievements, confidence in the industry has deteriorated sharply.

Several factors have combined to create this situation.

Combined Sewer Overflows

Perhaps no issue has attracted more attention than the operation of combined sewer overflows (CSOs).

Many sewer systems built during the nineteenth century combine rainfall and wastewater within the same pipes. During heavy rainfall these systems discharge diluted sewage into rivers to prevent flooding of homes and treatment works.

These overflows were designed as emergency protection measures rather than routine operating systems. However, increasing urbanisation, climate change and inadequate sewer capacity have increased the frequency with which they operate.

Public concern has been heightened by improved monitoring, mandatory reporting and greater visibility of discharges.

River Health

Many rivers fail to achieve “good ecological status” under the Water Framework Directive.

It is important, however, to recognise that water companies are only one contributor.

According to Environment Agency assessments, significant pressures include:

• agricultural runoff
• urban surface water drainage
• highway runoff
• industrial pollution
• historical contamination
• physical modification of rivers
• invasive species
• water abstraction
• wastewater discharges.

Effective river restoration therefore requires action across multiple sectors rather than focusing solely on water companies.

Financial Structures

Some companies have adopted highly leveraged financial structures.

Large debt burdens have increased concern about long-term resilience, particularly where significant dividends have been paid despite environmental underperformance.

Critics argue that excessive financial engineering diverted resources away from infrastructure investment.

Supporters respond that regulated utilities commonly use debt financing because stable revenues reduce borrowing costs, lowering customer bills.

The challenge lies not in borrowing itself but in ensuring that financial structures remain sustainable while supporting long-term investment.

Executive Pay

Executive remuneration has become a symbol of wider dissatisfaction.

Public concern arises when substantial bonuses appear inconsistent with environmental performance or customer outcomes.

Recent regulatory changes increasingly link executive rewards to operational and environmental performance, although public confidence remains fragile.

Did Regulation Fail?

It would be simplistic to conclude that water companies alone created the current situation.

The industry operates within one of the most heavily regulated sectors in the UK.

• Ofwat determines allowable revenues through five-year price reviews.
• Government sets strategic priorities.
• Environmental regulators define permit conditions and environmental standards.

Ultimately, investment programmes are constrained by regulatory decisions designed to balance affordability against infrastructure renewal.

Successive price reviews placed considerable emphasis on keeping customer bills low. This benefited consumers in the short term but may also have deferred some long-term investment.

Recent reviews have shifted towards significantly increased investment to address environmental performance and resilience.

Climate Change Increases the Challenge

Climate change is changing the operating environment.

• England faces both greater flood risk and increased drought frequency.
• Intense rainfall overwhelms combined sewer systems.
• Longer dry periods reduce river flows, increasing pollutant concentrations.
• Population growth increases demand while many regions already experience water stress.

Future infrastructure must therefore cope with much greater climatic variability than the systems originally constructed.

The Scale of Future Investment

Independent assessments suggest that the next twenty-five years will require investment substantially exceeding historical levels.

Key priorities include:

• replacing ageing water mains
• reducing leakage
• increasing water storage
• constructing strategic transfers between regions
• improving wastewater treatment
• reducing storm overflow operation
• improving catchment management
• strengthening drought resilience
• improving flood resilience
• introducing smarter monitoring and digital asset management.

These programmes will require many billions of pounds of investment regardless of ownership model.

Would Nationalisation Solve the Problem?

Calls for nationalisation have become increasingly prominent.

National ownership could simplify accountability and potentially reduce financing costs through government borrowing.

However, nationalisation would itself require very substantial public expenditure to acquire existing companies. Some commentators (not least Feargal Sharkey) argue that the cost of nationalisation has been overstated because it assumes acquisition at regulatory asset values rather than market values. They contend that financially weak companies could instead be restructured through insolvency or special administration processes, allowing public ownership at a lower cost. Critics respond that essential water services cannot be allowed to fail, and that government would ultimately remain responsible for maintaining services, managing debt and funding investment.

Future investment would then compete with health, education, defence and other public spending priorities.

Historical experience before privatisation also demonstrated that public ownership did not eliminate underinvestment, as governments often prioritised other expenditure during periods of fiscal pressure.

Ownership alone therefore cannot guarantee improved performance.

Effective governance, stable funding and competent regulation remain essential under either model.

How Can Public Trust Be Rebuilt?

Rebuilding trust requires more than improved communications.

It requires demonstrable performance improvements supported by greater transparency.

Several actions appear particularly important.

Deliver Visible Environmental Improvements

Public confidence will improve only if people can observe cleaner rivers, fewer pollution incidents and reduced overflow operation.

Increase Transparency

Near real-time publication of environmental performance, investment delivery and operational data would improve accountability.

Independent verification of reported performance should become standard practice.

Align Incentives

Executive remuneration should be closely linked to measurable environmental, customer and resilience outcomes rather than primarily financial metrics.

Strengthen Long-Term Investment

Infrastructure planning should extend beyond five-year regulatory cycles.

Stable long-term investment programmes reduce costs and improve resilience.

Catchment-Based Solutions

Many environmental problems originate outside wastewater systems.

Closer collaboration between water companies, farmers, local authorities, environmental organisations and communities can deliver better outcomes at lower cost.

Nature-based solutions—including wetland restoration, floodplain reconnection and sustainable drainage systems—can complement traditional engineering.

Improve Public Understanding

Many members of the public understandably assume that all sewage discharges represent system failure.

In reality, many arise from Victorian combined sewer systems designed to protect communities from flooding.

Explaining this distinction does not excuse pollution but helps inform debate about practical solutions and realistic timescales.

The Role of Government

Government remains central to future success.

Clear national policy is needed on:

• environmental priorities
• acceptable customer bills
• resilience standards
• climate adaptation
• infrastructure financing
• planning reform
• strategic water resource development.

Stable policy enables efficient long-term investment while reducing regulatory uncertainty.

A Shared Responsibility

Improving rivers is not solely the responsibility of water companies.

Agriculture, industry, local authorities, developers and individuals all influence water quality.

Consumers also contribute through sewer misuse, inappropriate disposal of fats, oils, wipes and pharmaceuticals, and increasing impermeable surfaces that accelerate runoff.

Achieving healthier rivers therefore requires a genuinely integrated approach involving every sector.

Conclusion

The water industry faces one of the greatest challenges since privatisation.

Public concern is justified where environmental performance has fallen short of expectations. Equally, many of the industry’s underlying challenges—including ageing infrastructure, climate change, population growth and decades of constrained investment—cannot be attributed solely to current company management.

The evidence suggests that the industry is neither an unqualified success nor a complete failure. It has delivered major improvements in drinking water quality and environmental infrastructure while simultaneously accumulating serious shortcomings in environmental performance, financial resilience and public confidence.

The way forward lies not in simplistic solutions but in sustained investment, stronger regulation, greater transparency, better governance and closer collaboration across all sectors affecting river health.

Ultimately, trust will not be restored through rhetoric. It will be restored when the public can see cleaner rivers, resilient infrastructure and an industry that consistently demonstrates that long-term stewardship of the environment is placed ahead of short-term financial interests.