Facts, Analysis and Comment.

Water Industry Regulation

Click here for an introduction to utility regulation.

Every water company in the UK has a monopoly or near monopoly, and (like railways) it is very hard to introduce competition into this naturally monopolistic industry. Therefore, although water companies' prices are set by Ofwat (in England & Wales) in the normal RPI-X sort of way, the economic regulation of this industry has a number of interesting features, summarised below.

Note in particular that water pricing, like energy pricing, contains substantial government-imposed environmental costs.

Financing and Profitability

The water industry has financed its huge capital expenditure (£108 billion from privatisation in 1989 to 2013 - see further below) by borrowing rather than through raising share capital - see chart on left. This trend has been encouraged by very low interest rates. This has resulted in three arguably undesirable consequences:

These issues were given some publicity in June 2013 when Jonson Cox, the new Chair of Ofwat, drew attention to the low tax payments. In a letter to the FT, he said that 'This is not for Ofwat, but may be morally questionable in a vital public service'. This may be true, but most senior regulators refuse to comment on issues, such as tax policy, for which they have no responsibility. Be that as it may, this comment was mild when compared with this paragraph earlier in the same letter:

'Ofwat welcomes long-term responsible investment in our sector, and wishes to avoid any shorter-term focus that "private equity" style structures can encourage. Customers benefit from an efficient level of debt, and the related tax relief, in the regulated entity. It is reasonable that some of the current gains from unexpectedly low debt rates and high RPI levels should be shared with customers as should future outperformance from factors beyond management control. Otherwise we will set the rules.'.

Mr Cox was clearly aiming to change behaviour by making his concerns clear and expecting the industry to respond, much as the Governor of the Bank of England used to be able to affect behaviour in the City of London 'by raising his eyebrows'. Mr Cox's approach certainly raised other eyebrows elsewhere in the regulatory community. But - to his credit - he had an early win when six water companies announced in February 2014 that they would not be raising prices in 2014 as much as they were allowed to do under the current (soon to expire) price control. Future pricing will be addressed via the new post-2015 price controls which would be imposed during 2014. It was even thought that the regulator might impose immediate P0 price reductions because the industry now has lower financing costs. (These are known in regulatory circles as the WACC: the weighted average cost of capital.)

By way of example, Thames Water has c.£10bn of regulated assets (i.e. its RCV - Regulatory Capital Value, or RAB - Regulatory Asset Base). Its debt is around £7.7bn so dividend payments of around £230m pa offer c.10% return on its apparent equity of £2.3bn. This very high return is seen as low-risk and so leads to share markets valuing the company at over £12bn, thus reducing the dividend yield to more like 5%. Other noticeable premiums were seen when Northumbria Water was bought at a premium of around 30% in 2011, and an unsuccessful takeover bid implied a 36% premium for Severn Water in 2013. Regulators inevitably go on high alert when they see shares trading at a significant premium to their RCV/RAB, and see this as a sign that the industry's retail prices are too high.

Equally, high dividend yields might also be seen as an inevitable consequence of high gearing (i.e. high debt/equity ratios) or - put another way - an inevitable consequence of the companies being perceived by investors as being high risk. This is another reason for regulators to take a special interest. But do investors realise how risky the shares are? It is possible, for instance, that the majority of investors are insufficiently focussed on the risk of a tough price control plus licence conditions which require substantial capital investment. A tough price control may well sharply reduce companies profits, so sharply reducing their share prices (does anyone care?) or even forcing them into insolvency - in which case more would certainly care.

But are the profits such a big deal? Again taking Thames Water as an example, dividends are around £25pa per each of their c10m customers. It may be hard to make a big dent in this without scaring away investors.

See below for the National Audit Office's views on these issues.

The Special Merger Regime

The water industry regulator, Ofwat, needs to be able to compare the costs and efficiency of the different water companies, and its ability to do this is reduced if they are allowed to merge. Unusually, therefore, all significant water industry mergers are investigated by the Competition and Markets Authority even though they cannot lead to a substantial lessening of competition. The law therefore requires the CC to decide whether the merger may be expected to prejudice the ability of Ofwat to make comparisons between different water enterprises.

Large Environmental Costs

The industry (and therefore its customers) pay a great deal of money in order to ensure that drinking water is very pure, rivers and beaches are clean, and so on. Such standards have been driven up as a result of EU Directives, often encouraged by UK Environment Ministers such as Michael Meacher in the late 1990s, and following very limited scrutiny in member states. Ofwat has no choice but to pass these costs on to consumers, which it does by adding a '+K' factor to the normal RPI-X formula.

Sceptics, myself included, have often wondered whether these costs are justified. But it is certainly true that our drinking water is now much less acidic than it was, and so dissolves smaller quantities of harmful lead. It is also less likely to contain harmful bugs such as cryptosporidium. And is is less likely to be coloured. All these are good results, although I am not aware that these benefits have been compared with the costs, which have been substantial. New pollution control obligations cost over £8bn between 1999 and 2004, whilst improved drinking water quality, and improved sewerage collection and treatment, will have cost a further £3bn+ and £8bn+ respectively in the period 2005-2015. The 26km 'London Supersewer' is likely to cost over £4bn which will be passed on to Thames Water customers, whose bills will rise indefinitely by £25pa. There are many who regard this expenditure as unnecessary, as well as many stout defenders of the need to reduce the number of times that London's sewers overflow into the Thames.

Combined water and sewage bills in England & Wales had accordingly typically risen by over 60% in the 10 years to 2013. The average bill in 2013 was £388 pa of which £123 was the cost of new infrastructure, driven by environmental legislation, £103 was returns to investors, £12 was tax and only £150 was operating expenditure. But there is a large regional variation because environmental costs depend very much upon the extent of a region's rivers and coastline. Average bills in the West Midlands were the lowest at only £335 in 2013, whilst the highest was £499 in the far South West. The disparity subsequently grew even wider, forcing the government to step in and subsidise Cornish water bills by £50pa.

The Foundation for Water Research has published a very interesting guide entitled Regulation for Water Quality: How to Safeguard the Water Environment. You can download it from the web here.


As so often, weak competition means that the water industry remains much less innovative and efficient than it might be. Even at the national level, it is noticeable that the often rain-soaked UK frequently has to resort to Summer season hosepipe bans, whereas the inhabitants of Las Vegas, although surrounded by desert, remain free to water their many luscious lawns.

But there is some scope for competition in the industry, especially in supplying very large customers. Indeed, Scotland was the first country in the world where business customers had an opportunity to choose their supplier. All non-household customers can now change their water supplier. As well as commercial companies, this includes public sector organisations such as schools, hospitals and council offices. There were 10 licensed suppliers in 2013.

Ofwat had for some time been a relatively weak player when it came to promoting competition in England and Wales, although it became more active in the period through to 2013 despite being shackled by weak legislation. Also, it had introduced separate wholesale and retail price controls, which encouraged competition for business customers outside the transmission network - see the Albion Water saga below.

It then became clear that there was no overriding reason why there should not be much more competition for billing, mending leaks etc. Ofwat accordingly announced, in September 2016, that it would like to open the domestic retail water market in England to more competition. Under the proposals, firms could buy water in batches from existing providers and sell it on to households, and Ofwat believed that greater competition could mean innovation and lower prices. Companies could also offer bundles of services, selling gas, electricity or broadband alongside water. Ofwat did not expect that greater competition would have a big impact on bills, with an average annual saving of maybe only £8. But it should lead to better service. "The uncomfortable truth is that, when it comes to retail offers, water companies provide an analogue service in a digital age. ... For instance, at the moment only two of the water companies in England let their customers manage their bills using an app. That's the kind of thing we'd expect to change and see real innovation." However, as with energy and personal banking, opening up the market would only work for customers if switching was made "as hassle-free as possible".

The change would need Ministerial approval, and it was not clear whether that would be forthcoming.

The most noticeable example of competition outside Scotland, had been Albion Water's use of the Competition Appeal Tribunal to enable it to supply cheap (non-drinkable) water to Shotton Paper and Corus Steel Shotton near the River Dee in North Wales. (Shotton Paper alone consumes nearly 20 million litres of water a day!) The interesting thing was that Albion was in effect a virtual supplier. Nothing changed in the real world apart from the legal ownership of the water as it flowed from river to major customer. Albion wanted to buy water at a reasonable price from United Utilities, the company that already extracted the water from the River Dee, and they wanted to pay Shotton's existing supplier, Dwr Cymru, a reasonable price for then transporting the water to Shotton. But Albion reckoned that, after adding these two prices together, they could still hugely undercut the price that Dwr Cymru charged e.g. Shotton Paper. In other words, Dwr Cymru were, in Albion's view, making excessive profits in supplying the two Shotton companies. But Dwr Cymru refused to offer a reasonable price to Albion, who then appealed to the Competition Appeal Tribunal. The CAT supported Albion and found Dwr Cymru guilty of abusing their dominant position, eventually awarding Albion nearly £2m in damages.

But there is another side to this story in that Dwr Cymru's Ofwat-approved prices were presumably cross-subsidising some of its customers at the expense of the two Shotton companies. Shotton Paper, understandably enough, wanted to stop this and therefore strongly supported Albion's attempt to insert itself into the supply chain, albeit without any accompanying physical presence. But the result may well be increased prices for other Dwr Cymru customers.

Other Developments

Jonson Cox, Ofwat's new Chair from 2013, has expressed concern about the industry's corporate governance, another area which for which he has no direct responsibility, when he said that 'We have not yet found a regulated water company that fully complies with the UK corporate governance code or satisfactorily explains why not. Ofwat's approach is to become less intrusive, and to allow companies opportunities and incentives for greater ownership of their business plans. This requires that boards act in customers' interests. [but] Companies with structures or behaviours that risk public legitimacy cannot benefit from less intrusive regulation.' Again, many will agree with Mr Cox, but others will be concerned that, if a regulator discourages one particular commercial behaviour, then they have to take responsibility for doing so, if the alternative turns out to have unintended and undesirable consequences.

Ofwat announced its provisional 2015-2020 price controls in August 2014. On average, prices would fall at 1% a year in real terms - i.e. the price control formula was RPI-1. The underlying formulae allowed significant price rises to fund significant expenditure, broadly balanced by reductions to allow for lower financing costs. The net result, from a customer's point of view, was a good deal better than in previous years, even if the price reductions are hardly dramatic, given past increases.


1. A government Review of Ofwat and Consumer Representation in the Water Sector, led by David Gray, was published in 2011. However, it did not recommend any major changes in the way the industry was regulated.

2. The National Audit Office published a report on Ofwat's 2014 price controls in October 2015. It was generally complimentary but concluded that 'companies made net gains of at least £800 million between 2010 and 2015 because of unexpected falls in borrowing costs and the corporation tax rate. Customers would have benefitted if they rather than the companies had borne these risks, though they could have lost out if borrowing costs or tax rates had risen. We consider that the price cap regime does not balance risks appropriately between companies and consumers, and so does not yet achieve the value for money that it should.' Comment: This is a tempting conclusion when the benefit of the risks had recently fallen to the companies. One wonders if the NAO would have formed the same conclusion if customers had been saved £800m as a result of the inflexible price control? I suspect not.

3. The Environment Agency was severely criticised in early 2016 following severe flooding in the North of England. Similar criticisms had previously been leveled at the agency following flooding in the Thames Valley and the Somerset Levels. Commentators pointed out that the agency had suffered significant budget cuts and could not borrow, for instance to fund flood defences. There was perhaps a case for returning to the long-gone days when water companies were responsible for flood defence in their areas. It also seemed likely that the agency was simply too large and had too many functions, so that its Board could not bring sufficient informed attention to individual problems such as flood protection. Click here for a more detailed discussion of this subject.


Martin Stanley