51. For the purposes of this Chapter, the following categories of water withdrawals are established:(1) category 1: water withdrawals carried out for a municipal waterworks system supplying over 500 persons and at least 1 residence;
(2) category 2: water withdrawals carried out to supply(a) a municipal waterworks system supplying between 21 and 500 persons and at least 1 residence;
(b) any other waterworks system supplying 21 or more persons and at least 1 residence;
(c) a system, independent from a waterworks system, supplying at least 21 or more persons at 1 or more educational institutions, 1 or more detention facilities, or 1 or more health and social services institutions within the meaning of the Regulation respecting the quality of drinking water (chapter Q-2, r. 40);
(3) category 3: water withdrawals carried out to supply(a) a system, independent from a waterworks system, supplying only 1 or more food processing establishments;
(b) a system, independent from a waterworks system supplying only 1 or more enterprises, 1 or more tourist establishments or 1 or more seasonal tourist establishments within the meaning of the Regulation respecting the quality of drinking water;
(c) any other system supplying 20 persons or fewer.