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

Section 87.25.7 Disposition versions

2020-12-03

87.25.7. Construction standards: An above-ground leaching field built with borrowed sand must be built with a low pressure feed system.

It must meet the construction standards in subparagraphs d, e, f, g, g.1 and g.2 of the first paragraph of section 21 and in subparagraphs a and b of the second paragraph of that section, those in section 24, those in subparagraphs a, b, c and f to h of the first paragraph of section 37 and those in section 39.1, as well as the following standards:

(a)  the bottom of the gravel or crushed stone layer must be at least 60 cm above bedrock, impermeable or low permeability soil and underground water;

(b)  the maximum width of the sand-filter bed or section of it must be not more than 3.1 m;

(c)  the area of the sand-filter bed must meet the standards in the following table for an isolated dwelling:

Number of bedrooms	Minimum area of sand‑filter bed in square metres
1	12
2	18
3	26
4	35
5	44
6	52

(d)  in other cases, the area of the sand-filter bed must meet the standards in the following table:

Daily total flow total (in litres)	Minimum area of sand‑filter bed in square metres
0 to 540	12
541 to 1,080	18
1,081 to 1,620	26
1,621 to 2,160	35
2,161 to 2,700	44
2,701 to 3,240	52

O.C. 1156-2020, s. 67.