Question

define sewers and sewage.

Answer 1

Sewer: An artificial subterranean conduit to carry off sewage and sometimes surface water (as from rainfall).

Sewage: Is water-carried wastes, in either solution or suspension, that is intended to flow away from a community. Also known as wastewater flows, sewage is the used water supply of the community. It is more than 99.9% pure water and is characterized by its volume or rate of flow, its physical condition, its chemical constituents, and the bacteriological organisms that it contains. Depending on their origin, wastewaters can be classed as sanitary, commercial, industrial, agricultural or surface run off.