Campaigners say water companies in England and Wales lose large volumes of water through leaks that exceed what a hosepipe ban would reduce. Greenpeace UK research estimates that 2.87 billion litres of water seep from leaky pipes every day. The campaign group says this figure is equivalent to filling about 1,150 Olympic-sized swimming pools and represents roughly one-fifth of all water pumped through the network. Greenpeace argues that the daily leakage is about five times the amount that a nationwide hosepipe ban could save, based on the implied comparison between leaks and potential demand reductions. The reports focus on leakage rather than specific company-level performance, and they present Greenpeace’s calculations and conclusions about the scale of waste. No additional figures on the exact assumed savings from a hosepipe ban are provided in the shared excerpts. The story therefore centers on the campaign group’s estimate of leakage losses and its comparison to the potential impact of restricting water use through a ban.