26. Installation conditions: Where the effluent of a treatment system is carried towards a soil absorption system and a soil absorption field may not be built according to the standards of section 18, the treatment system must be connected to a seepage bed if the conditions provided for in paragraphs a and b of section 17 are met and if the grade of the disposal site is equal to or less than 10%.
R.R.Q., 1981, c. Q-2, r. 8, s. 26; O.C. 786-2000, s. 29; O.C. 1156-2020, s. 371.