Definitions for wastewaterˈweɪstˌwɔ tər, -ˌwɒt ər
Random House Webster's College Dictionary
waste•wa•terˈweɪstˌwɔ tər, -ˌwɒt ər(n.)
water that has been used in washing, flushing, etc.; sewage.
Category: Common Vocabulary, Civil Engineering
Origin of wastewater:
effluent, wastewater, sewer water(noun)
water mixed with waste matter
Any water that has been used by some human domestic or industrial activity and, because of that, now contains waste products.