12. Watertightness and location: Every primary treatment system must be watertight so that water may flow only through the holes intended for that purpose and, subject to section 7.1.1, be located in accordance with the standards prescribed in section 7.1.
R.R.Q., 1981, c. Q-2, r. 8, s. 12; O.C. 786-2000, s. 17; O.C. 1156-2020, s. 271.