9.1. Primary treatment system: The primary treatment system must be composed of a septic tank cast on site in accordance with section 10, a septic tank prefabricated in accordance with section 11 or a system that complies with section 11.1.
For the purposes of this Regulation, a system whose effluent is carried to a municipal wastewater treatment works is also a primary treatment system if it
(a) is composed of a septic tank certified CSA B66-16 or a septic tank meeting the requirements of BNQ standard 3680-905, other than the requirements as to the outlet device and marking, and installed in compliance with the standards provided for in paragraphs l, m, m.1 and o of section 10; or
(b) is composed of a septic tank cast on site in accordance with section 10, other than the provisions of paragraph h of that section dealing with the outlet device.
In the cases described in subparagraphs a and b, if a pump is added, the volume of the septic tank compartment housing the pump is not to be considered in calculating the minimum total capacity of the tank and no scum or sludge may be allowed to enter the system serving the municipal wastewater treatment works.
O.C. 786-2000, s. 13; O.C. 1156-2020, s. 241.