black water
n.— «A brave West Australian Government is considering asking its residents to at least think about drinking recycled sewage water. In Victoria, the Bracks Government has firmly ruled it out and the Liberals agree there is no need for a move to drink what is known as black water.» —“Recycled sewage water a political turn-off” by Ellen Whinnett Herald Sun (Australia) Jan. 5, 2007. (source: Double-Tongued Dictionary)
Further reading
As we’ve noted, in California’s Orange County, to birdie means “to drink from a bottle without touching it with one’s lips.” Elsewhere this germ-avoidant act is also called airsipping, airing, baby birding. In parts of the UK, you might sky a drink...
A retronym is a word coined to distinguish something new from an older, more generic version, such as electric guitar or clock radio. A couple of new retronyms are fine water, or “unprocessed water that reflects a region’s terroir” and water...