Q-2, r. 22 - Regulation respecting waste water disposal systems for isolated dwellings

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87.27. Effluent of a standard sand-filter bed or advanced secondary treatment system: The effluent of a standard sand-filter bed or advanced secondary treatment system that cannot be carried towards a leaching field that complies with Division XV.4 may be discharged into a watercourse where all the following conditions are met:
(1)  the effluent is discharged into a watercourse with a dilution rate in dry periods over 1:300;
(2)  the watercourse is not located upstream from a lake, a swamp or a pond, except in the case of a lake listed in Schedule 2 or in the case of a lake, swamp or pond located north of the 49°30' parallel in Municipalité régionale de comté de Manicouagan, north of the 50°30' parallel in Municipalité régionale de comté de Sept-Rivières or north of the 49th parallel elsewhere in Québec.
The outlet pipe through which the effluent is discharged into the watercourse must be located at all times below the surface of the receiving water.
O.C. 786-2000, s. 69.