Some days ago I watched an interesting episode of "Industrial Revelations" on one of the private TV stations here (cannot remember which one it was, maybe "Dave" or "Virgin"). This one featured Victorian (and some Edwardian) steam technology used for water supply and sewage disposal. Most impressive, that. If they show a re-run these days, very much worth it (although that presenter is a bit irritatingly exhilarated - not half as bad as Andrew Marr, though, and at least not as sedate as the late Fred Dibnah).