In this video from 5 years ago at Amundsen-Scott South Pole Station (at the south pole, not to be confused with the article which is from McMurdo on the coast,

In this video from 5 years ago at Amundsen-Scott South Pole Station (at the south pole, not to be confused with the article which is from McMurdo on the coast, next to Scott base on the coast), the narrator specifically said water efficiency is a concern. They have front-loading machines. But as she says, fuel has to be flown in, presumably it comes by ship to McMurdo. https://youtu.be/vrPiVT23MhA?t=404 https://youtu.be/vrPiVT23MhA?t=404