3.1. To determine if a water withdrawal capacity or if a water withdrawal reaches the volume from which the withdrawer is required, under a provision of this Regulation, to declare the volumes of water it withdraws or may withdraw, all the volumes of water withdrawn from each withdrawal site must be added up each time that more than one withdrawal site is connected to a single establishment or waterworks system. Establishments whose activities are related or complementary to one another and are under the responsibility of one withdrawer are considered to be part of the same establishment.