Sewage Discharges

John Hayes Excerpts

Wednesday 12th October 2022 Westminster Hall

[The Parliamentary Under-Secretary of State for Environment, Food and Rural Affairs (Trudy Harrison)]

It is a pleasure to serve under your chairmanship for the first time in my position in DEFRA, Ms Elliott. I thank all colleagues for showing such interest in and passion about a subject that I know we all care deeply about. Most of all, I thank my hon. Friend the Member for Bexhill and Battle (Huw Merriman) for securing the debate.

I also pay tribute to the two Ministers who were unable to speak in the debate but have listened intently: the Under-Secretary of State for Foreign, Commonwealth and Development Affairs, my hon. Friend the Member for Chichester (Gillian Keegan) and the Minister of State, Foreign, Commonwealth and Development Office, my right hon. Friend the Member for Hereford and South Herefordshire (Jesse Norman). I am very grateful for support.

It would be remiss of me not to mention the two previous Ministers who have done so much in this area: my hon. Friend the Member for St Austell and Newquay (Steve Double) and, of course, my wonderful predecessor, my hon. Friend the Member for Taunton Deane (Rebeccab Pow), to whom I pay particular thanks. They have not only taken up this issue professionally as Ministers, but campaigned pretty much their entire lives on it. That hard work has paid dividends: I am able to stand here today and talk about the improvements that this Government have made, and the pragmatic steps that enable monitoring. It is uncomfortable to hear the results of that monitoring, but without it we would not know where or how much we need to improve. To put some numbers on that monitoring, we have improved the systems from 5% in 2016 to 90% today—a tremendous improvement.

We are absolutely clear that we will not tolerate the failure of water companies to reduce the amount of storm sewage discharges. It is completely unacceptable. When it rains heavily, as has been discussed today, rainwater lands on roofs and impermeable surfaces. It is uncharacteristic of me to agree so much with the SNP spokesperson, the hon. Member for Kilmarnock and Loudoun (Alan Brown), but he has experience in this particular sector. We recognise that combined sewers are part of the problem, particularly during heavy precipitation, when all of that run-off from non-permeable surfaces flows with the foul water into the sewage treatment plant. We hold water companies to account for improving that situation, for splitting those systems and for a whole raft of other infrastructure changes, but that will take time.

[Sir John Hayes (South Holland and The Deepings) (Con)]

My right hon. Friend the Member for Ludlow (Philip Dunne) raised the possibility of water companies being statutory consultees when planning applications that add pressure to existing sewerage systems are made. Had they been so, developments in Weston, in my constituency, that will put unbearable pressure on the existing drainage and sewerage system would not have gone ahead.

[Trudy Harrison]

My right hon. Friend raises an excellent point. Reforms are taking place in the Department for Levelling Up, Housing and Communities to look at the plethora of opportunities for speeding up some of those planning processes, with no regression in environmental protections. He raises the issue of nitrogen and phosphates in our water system. Nutrient neutrality has caused significant delays—in fact, entire blockages—for many house builders across the country. That is exactly why we are coming up with systems to ensure that those developers contribute to environmental processes that improve the reduction of nitrogen and phosphorous in water, and enable those developments to go ahead.

I have talked about the challenge of combined sewers. The options are both intolerable as long-term solutions: either to allow water, including foul water, to back up the system, flooding into people’s homes and businesses—I was flooded, and I agree with other Members that it is an incredibly unpleasant situation to be in—or to discharge sewage into watercourses. Neither of those options is acceptable or tolerable.

In August, the Government published the storm overflows discharge reduction plan, which found that achieving complete elimination could cost up to £600 billion and increase annual water bills by up to £817 by 2049. It would also be, as suggested by the hon. Member for Kilmarnock and Loudoun, highly disruptive and complex to deliver nationwide. Our storm overflow discharge reduction plan will see £56 billion in capital investment by 2050—the largest infrastructure programme in water company history. By 2035, water companies will have to improve all storm overflows discharging into or near every designated bathing water, and improve 75% of overflows discharging into high-priority nature sites. By 2050, that will apply to all remaining storm overflows covered by our targets regardless of their location.

There has been some talk about the Environment Agency being resourced to be able to carry out that role. DEFRA and its agencies received £4.3 billion in the 2021 spending review to do more to tackle climate change and protect our environment for future generations. In terms of the response to Ofwat, Ofwat’s investigations will consider how overall companies operate, manage their sewage treatment works and report on their performance where the investigations can find failings on obligations. Ofwat is responsible for enforcing; it will use its full range of powers accordingly to hold companies to account for their failures, and to require them to put things right in short order.

The subject of sewage also brought to the fore the Thames tideway tunnel, which is a £1.9 billion investment. Once operational and taken together with the other improvements, it will achieve a 95% reduction in the annual volume of untreated waste water entering the tidal Thames.