- wastewater from toilets, garbage disposal, and industrial processes.
Compare gray water.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for black water
At dawn he came to tell her that Parr had the black-water fever.
Malarial and black-water fever are prevalent in Dar-es-Salaam.Seven Legs Across the Seas
"We've got black-water fever on board now, Brasse," he said in a weary voice.The White Blackbird
It quickly became pernicious, and developed into black-water fever.South Sea Tales
"And this time it will get me: just one or two little chills," he reflected, thinking of black-water fever.
- household waste water that cannot be reused without purificationCompare grey water