Levelling-up and Regeneration Bill

Debate between Baroness Willis of Summertown and Baroness Scott of Bybrook

Report stage
Wednesday 13th September 2023 Lords Chamber

[Baroness Willis of Summertown (CB)]

My Lords, at an earlier stage of the Bill, I made the case, with others, for amending Clause 158, which concerns the statutory requirement for water companies to upgrade sewage plants to meet new nutrient standards in the areas worst affected by pollution. We welcomed this, but although it was seen as a good step forwards for improving water quality, frustratingly, it specified only that such upgrades should take place at the sewage disposal works themselves, usually meaning traditional engineering systems and solutions, which in themselves relied on concrete materials. Amendment 247, tabled in my name and with the support of the noble Baronesses, Lady Parminter and Lady Jones of Whitchurch, was therefore designed to enable effective use of restored habitats, known in this context as nature-based solutions, by water companies to also meet those standards.

As we pointed out in Committee, those nature-based alternatives can be a really effective and very cheap approach to soaking up nutrient loads and reducing the pollution reaching rivers, as well as providing excellent habitats for biodiversity. Our amendment also had strong support from water companies and Ofwat, but in Committee, the Government’s argument against it was the suggestion that it could somehow let water companies off the hook by allowing them to use such nature-based measures to fudge the delivery of their upgrades. We have therefore brought back this tweaked amendment, in which we have added an explicit requirement for water companies to secure agreement for compliance and investment plans from Ofwat and the Environment Agency before commencing their updates—so we are putting a fail safe in there. We have also included in the amendment the ability for the Environment Agency to impose monetary penalties on water companies for failing to deliver on the compliance and investment plans.

Over the summer, concessions in this area were tabled by the Government, which I really welcome. Those amendments are really positive in principle. However—this is a very big “however”—I fear that Amendment 247 may become very insignificant for the environment if the other government amendments recently introduced into this group are passed. I will therefore briefly speak to those as well. As I am a scientist, I will address the amendments from a scientific perspective rather than addressing their constitutional and legal aspects. In particular, I want to focus on Amendment 247YYA, which amends the habitats regulations to remove controls on nutrient loads in rivers for those that are associated with housing developments.

The amendments are based on the premise that the extra nutrient loading in areas where the relevant houses will be built will be less than 1% of the loading of the existing housing stock. This is where a key piece of evidence is missing: what is the loading of the existing housing stock? The Home Builders Federation would like us to believe that houses contribute 5% of excess nutrient loads in rivers in England compared with 50% from agricultural activities, so it is all the problem of farmers and not of housebuilders.

I quote from the Home Builders Federation:

“It is estimated that all existing development, including residential, commercial and the rest of the built environment, contributes less than 5% towards the phosphate and nitrate loads in our rivers—meaning the occupants of any new homes built would make a negligible difference”.


But the evidence base is, very strangely, lacking: where does that 5% come from? Searching for it leads me to believe that the figure has been extrapolated from a 2014 Defra report, The Impact of Agriculture on the Water Environment: summary of evidence, which was used to inform the 25-year environment plan. The first thing to note is that this report has since been updated by Defra, and the most recent statistics stand as follows:

“Agriculture is the dominant source of nitrate in water (about 70% of total inputs), with sewage effluent a secondary contributor (25-30%)”—


not 5%.

I also looked at other data that could support this level of 5% from the built environment, so I did a search of academic studies that had been published in the peer-reviewed literature in the past three years in similar climatic regions across the world to look at the percentage source of pollution in river catchments that contain a mix of agriculture and urban development. I could not find a single example that suggested a value as low as 5% of the nutrients in rivers coming from housing. One found that, in a large catchment containing seven rivers, 14% of nutrients were from wastewater from residential buildings; in another, it was 33%, and 28% in another. All were significantly higher than the 5% that we have been told is the likely impact. For the UK, a recent assessment by Greenshank Environmental also indicates a far higher nutrient load in rivers from housing, closer to 36%. I therefore urge other noble Lords not to take this 5% figure too seriously.

Worse than this, if Amendment 247YYA goes through, we will never know the true value, since the amendment instructs planning authorities to assume no increase in pollution, prevents them requesting an assessment to investigate pollution further and even goes as far as to instruct authorities to ignore any evidence of potential adverse impacts; for example, as provided by scientific studies or even NGOs. It simply cannot be acceptable to amend one of our key environmental protections like this.

These amendments also fly in the face of the environment statement on the Bill, which says:

“The Bill will not have the effect of reducing the level of environmental protection provided for by any existing environmental law”.


That does not seem to be the case. The Government’s own adviser, and the chair of the Office for Environmental Protection, made this point in a letter to the Government last week.

In conclusion, I will not be supporting these later government amendments. I urge other noble Lords to do the same, not least because in this country we are already dealing with extremely polluted rivers. In February this year, the Environment Agency reported that only 14% of our rivers are classified as being in a good ecological status. It also stated that, without new interventions, this figure will drop to just 6% by 2027. I beg to move.

[Baroness Scott of Bybrook (Con)]

My Lords, with the leave of the House, and to assist noble Lords participating in this debate, I will speak to the government amendments in this group. I will of course address the amendments tabled by noble Lords and the wider debate in my closing remarks.

All the amendments in my name address the major issue of nutrient neutrality, which has effectively stalled or blocked completely housing development in affected areas. For procedural reasons, and agreed in the usual channels, I will treat the tailing amendments—Amendments 247YE and 247YX—as de-grouped.

This issue is hampering local economies, depriving communities of much needed housing and threatening to put the SME builders out of business. Nutrients entering our rivers is a real and serious problem, but the contribution made by new homes is very small compared with that from sources such as industry, agriculture and our existing housing stock. Government Amendments 247A to 247YW cover a range of improvements to our current approach to improving wastewater treatment. These amendments respond to comments and concerns of noble Lords in Committee about more nature-based and catchment-based approaches. I hope they will be welcomed.

I now turn to Amendment 247YYA, mentioned by the noble Baroness, Lady Willis of Summertown, which would require a competent authority to make a reasonable assumption for relevant developments that nutrients from that development will not adversely affect the integrity of the site. The assumption we are asking competent authorities to make is reasonable for two reasons. First, this assumption is limited to the development where the wastewater is treated by a wastewater treatment works or private treatment system regulated under the environmental permitting regulations. This means that nutrient loads in wastewater will remain strictly controlled through the environmental permitting regime, which places legally binding duties on water companies, and through the regulators of the water industry, which are subject to the requirements of the habitats regulations. Secondly, the mitigations that we are putting in place will ensure that there are no additional nutrient loads from residential development.

If we are to take these reasonable steps, we need to amend the habitats regulations in the way our amendments set out. This is a carefully targeted and specific change, aimed only at addressing a disproportionate application of the regulations since the Dutch nitrogen case in the European Court of Justice. Following the findings in this case, since March 2022 housing development in affected catchments has been stalled or blocked—even though new housing contributes such a small proportion of pollution.

In these areas, following the guidance that Natural England was required to issue, development may not be consented unless and until, case by case, house by house, mitigation is in place. This applies even though the additional pollution we are talking about—the additional nitrate and phosphate which remains in the water after domestic sewage is treated—will not get anywhere near the waterways unless the houses not only have planning permission but have been built and occupied.

New development is stalling at the point of planning permission, or even, in many cases, after permission has been granted. It is an absurd situation that is undermining local economies, costing jobs, threatening to put small developers out of business and, above all, leaving communities without the homes that they want and need.

This is not to say that the problem of nutrient pollution in our rivers is unimportant—it very much is—but developers and local planning authorities are bound up in a burdensome and expensive process that does nothing to give certainty to anyone, creating huge opportunity costs. In some catchment areas, hard work by Natural England, environmental groups and developers has started to allow some housing to be consented. However, having listened to the concerns of local communities, local authorities and housebuilders, it is clear that these schemes are moving too slowly, with no guarantee that demand can be met imminently.