The Longest Drink (1973)

Don Haworth's documentary film considers the water story so far, from the raindrop through a great industrial city to the sea, from the Victorians' first brash floodings of country valleys to the politics of meekness and the technology of electronic gadgets. It also follows the people who work with water - from the low paid but leisurely "reservoir keepers," to the engineers, tunnellers, maintenance men, and water testers, to the beleagured mobile water man, who it appears spends much of his day getting it in the ear from the good people of Manchester.