I thank my hon. Friend. This is an important issue and we have thought about it. The Government will come back and report on the costs
and benefits; we are doing a whole analysis of that. As an approximate estimate, to get rid of or eliminate storm sewage overflows would cost between—these are very wide figures—£150 billion and £660 billion. One must consider the cost of bills, because there will be an impact on those. That is why I made the point earlier that a lot of other areas in connection with our rivers and our water are really important. We must also deal with those, and it must be proportionate. My hon. Friend is right, and we will soon have the data from our storm overflows taskforce, and from our duty to report on what the cost benefits would be of completely eliminating storm overflows. Such things are used far too frequently, but they are also an emergency measure that should potentially always remain, just in case we have to deal with huge floods.
Another area of work that needs to be done—we are doing it—involves levelling up and what was MHCLG but is now DLUHC, the Department for Levelling Up, Housing and Communities,. It is about sustainable development and what we do with drain water, all the rest of the water, and separating out our systems. This is a cross-departmental issue, and we are tackling some really important matters in the Bill.
The Bill also requires us to set and achieve at least one target in the priority area of water. Our policy paper, which was published in August 2020, set out the objectives for the water targets we were considering. Those include reducing pollution from agriculture, waste water, abandoned metal mines, and reducing water demand. All those issues are significant to the whole area we are talking about.
Outside the Bill, we have committed to undertaking a review of the case for implementing schedule 3 to the Flood and Water Management Act 2010 in England. That schedule would set mandatory build standards for sustainable drainage schemes on new developments, which so many people have been calling for. Those are not mandatory at the moment, but to really have an effect, they need to be. We are reviewing that and, based on what we find, we will be working with DLUHC on that very issue.
We have moved further; with Lords amendments 46, 47, and 74, we will require water companies to do near real-time reporting of storm overflows and water quality monitoring upstream and downstream of storm overflows and sewage disposal works so that we have fully transparent data. People called for transparency of data in the debate on the previous group of amendments, and we will have it in relation to the impact of those things on our waters.
The first part of Lords amendment 45, new section 141A of the Water Industry Act 1991, was introduced in the other place by the Duke of Wellington and seeks to place a duty on sewerage undertakers to progressively reduce the harm from storm overflows and to ensure compliance with that duty. We have listened carefully to Parliament and, as I am sure my right hon. Friend the Member for Ludlow will agree, we have moved on this matter more than anything else in the Bill. I hope that I have made clear everything that we are bringing forward.
That is not to say that we are not listening; we are. I am confident in all the things I have outlined, together with the draft policy statement for Ofwat, which states that we expect it to
“incentivise water companies to significantly reduce the frequency and volume of sewage discharges from storm overflows.”
That is the pointer for the water companies really needing to work on this issue. I know that a group of colleagues from the Portsmouth area are banking on that. They are working with the water companies in the area on pollution issues. They have brought all the bodies together in a partnership to tackle their sewage overflow issues, and they need what is in the Bill to point them in the right direction. We have their full support, and I commend them for all the work that they are doing. There is a whole group of colleagues doing that.
We have been clear that we want to see fewer discharges of untreated sewage into rivers, lakes and seas. I am personally determined to see that happen, and I am really proud of the actions we are taking. Lines 7 to 14 of Lords amendment 45 are therefore unnecessary, and I ask the House to support amendment (a) to leave them out.