wastewater definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
water used by a factory, household, etc. and discharged as sewage
wastewater definition by American Heritage Dictionary
Water that has been used, as for washing, flushing, or in a manufacturing process, and so contains waste products; sewage.