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

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48. Construction standards: Every privy must include a pit, construction sill, a floor, a seat, a shelter and a mound.
It must comply with the following standards:
(a)  the dry pit must be at least 1.2 m deep, 1.2 m long and 1 m wide;
(a.1)  the lower part of the walls, for half the height, must be lined with spaced boards and the upper part with tightly joined boards;
(a.2)  the bottom of the pit must be at least 60 cm above bedrock, underground water or impermeable or low permeability soil;
(b)  a construction sill, made from structural lumber 10 cm by 10 cm must be installed at ground level around the whole perimeter of the pit;
(c)  the floor must be made from plywood or any other material which makes it watertight and prevents gases coming from the pit from entering the shelter;
(d)  the seat must be built of a watertight material and equipped with a tight-fitting lid;
(e)  the shelter must:
i.  sit on the construction sill;
ii.  be enclosed to keep flies and mosquitoes outside;
iii.  be ventilated by screens installed in its upper walls;
iv.  be painted inside; and
v.  be equipped with an overhanging roof to deflect rainwater away from the pit;
(f)  the construction sill and the bottom of the shelter must be banked with earth and a mound must be made to deflect rainwater away from the pit;
(f.1)  the maximum height of the backfill to build a dry pit must be not more than 60 cm;
(g)  when the pit is partially dug in a backfill, the grade on each side of the backfill must be 1:2;
(h)  a ventilation pipe with a minimum diameter of 10 cm and equipped with a screen at the outlet must be installed on the seat or on the floor of the shelter and must extend 60 cm above the roof.
R.R.Q., 1981, c. Q-2, r. 8, s. 48; O.C. 786-2000, s. 47.