North American Product Classification System (NAPCS) Canada 2017 Version 2.0

623 - Civil engineering works

This group comprises civil engineering works (infrastructures) or construction works other than buildings and their associated site works, comprising a structure, such as highways, bridges, pipelines, nuclear power plants, water filtration plants and mine structures (except buildings). Construction works are also the results of operations such as dredging, dewatering or soil stabilization.

62352 - Sewage engineering works

This class comprises sewage engineering works.

623521 - Sewage treatment plants

This subclass comprises sewage treatment plants.

623522 - Sewage collection and disposal engineering works

This subclass comprises sewage collection and disposal engineering works.