13. Emptying: A septic tank referred to in the second paragraph of section 9.1, section 10 or section 11 that is used only seasonally must be pumped out at least once every 4 years.
A septic tank referred to in the second paragraph of section 9.1, section 10 or section 11 that is used year-round must be pumped out at least once every 2 years.
Despite the foregoing, if a municipality provides a septic tank pumping service, a septic tank may be pumped out as provided in the first and second paragraphs or as indicated by the measurement of the scum or sludge layer. In the latter case, a septic tank must be pumped out when the thickness of the scum layer is equal to or greater than 12 cm or the thickness of the sludge layer is equal to or greater than 30 cm.
R.R.Q., 1981, c. Q-2, r. 8, s. 13; O.C. 786-2000, s. 18; O.C. 12-2008, s. 3; 1156-2020O.C. 1156-2020, s. 281.