The UK’s sewage oversight has been found wanting, with water firms and regulators facing criticism for inadequate performance and a lack of urgency in addressing failing infrastructure. A report by the National Audit Office warns that rising bills for consumers could lead to a water shortage without adequate investment.
The National Audit Office (NAO) has found that water companies in the UK have been getting away with failures to improve sewage works and overspending due to regulatory problems. The report highlights that firms have spent up to 10 times as much on their sewage works and piping as comparable countries, leading to rising bills for consumers.
Water companies have a long history dating back to ancient civilizations.
In modern times, these companies are responsible for providing clean drinking water and sanitation services to millions of people worldwide.
The industry has evolved significantly over the years, with advancements in technology and infrastructure improvements.
Today, water companies prioritize sustainability, efficiency, and customer satisfaction.
According to the World Health Organization (WHO) , access to safe drinking water is a fundamental human right.
Regulatory Gaps and Lack of Urgency
The NAO found that regulatory gaps and a lack of urgency about replacing old and malfunctioning infrastructure has caused a ‘rising tide of risk’ in the sector. This has resulted in increasing bills for customers, with some water companies complaining to the Competition and Markets Authority to increase their bills further.
Regulatory gaps refer to discrepancies between existing laws, regulations, and standards, and the actual practices or needs of a particular industry or sector.
These gaps can arise due to outdated legislation, lack of enforcement, or inadequate regulatory frameworks.
According to a study by the World Bank, regulatory gaps can lead to significant economic losses, estimated at up to 10% of GDP in some countries.
Identifying and addressing these gaps is crucial for businesses to operate efficiently and effectively.
Insufficient Enforcement and Lack of Metrics
The report also found that only 1% of water companies’ actions to improve environmental performance have been inspected by the Environment Agency, highlighting a lack of effective enforcement. Furthermore, there is no regulator responsible for proactively inspecting wastewater assets to prevent further environmental harm.
Urgent Action Needed

Gareth Davies, the head of the NAO, stated that ‘given the unprecedented situation facing the sector, Defra and the regulators need to act urgently to address industry performance and resilience.’ The report warned that if urgent action is not taken, it could lead to a water shortage without adequate investment.
National Plan for Water Supply
The NAO also criticized the lack of a national plan for water supply and recommended that Defra must understand the costs and deliverability of its plans, alongside the impact they would have on customers’ bills. This includes addressing concerns about weak infrastructure, which has come to the fore in the debate over Thames Water‘s future.
Government Response
The government has set up an independent water commission to investigate how the water industry operates and whether regulation is fit for purpose. The Environment Agency has stated that it will work with Defra and other regulators to implement the report’s recommendations, while Ofwat has agreed with the NAO‘s recommendations and plans to progress its work.
An independent water commission is a government agency responsible for managing and regulating a region's water resources.
These commissions often oversee the allocation of water rights, enforce water quality standards, and develop strategies to ensure sustainable water supply.
In some countries, independent water commissions are mandated by law to provide transparent decision-making processes and protect public interests.
They typically consist of experts from various fields, including hydrology, ecology, and economics.
Industry Response
Water UK, which represents the water companies, has been contacted for comment but has not responded. However, the industry is facing significant pressure, particularly from Thames Water, which needs to secure fresh investment within months due to its almost £20bn debt.