Question

in large cities the accumulated waste water is known as -______ wastewater​

Answer 1

Answer:

Wastewater is the polluted form of water generated from rainwater runoff and human activities. It is also called sewage. It is typically categorized by the manner in which it is generated—specifically, as domestic sewage, industrial sewage, or storm sewage (stormwater).

Answer 2

Explanation:

The Urban Waste Water Treatment Directive is a 1991 European Union directive concerning urban waste water "collection, treatment and discharge of urban waste water and the treatment and discharge of waste water from certain industrial sectors".