21. Sewer system: The standards set forth in Division III pertaining to deposits from a petroleum refinery in the environment shall apply, with the necessary modifications, to deposits from a petroleum refinery in any sewer system, except those respecting waste water from sanitary facilities deposited separately from other liquid effluents.
R.R.Q., 1981, c. Q-2, r. 6, s. 21; I.N. 2019-12-01.