Regulation

Code de construction, RLRQ c. B-1.1, r. 2

LégisQuébec, Éditeur officiel du Québec

Cited by

Chapter III of the Construction Code covers plumbing, except downstream of an individual backflow preventer.
Chapter III of the Construction Code excludes piping not attached to a building and foundation drains from plumbing.
Plumbing covers installations connected to the building; unconnected yard drains are excluded.
Chapter III exclusions.
Yard drains excluded from plumbing.
The Plumbing chapter of the Construction Code also applies outside the building on the property, but excludes the installation downstream of an individual-protection backflow preventer.
The Electricity chapter of the Construction Code adopts the Canadian Electrical Code (CSA C22.1:21) with Quebec amendments; the CSA text is paid and cited, never reproduced.