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

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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.
O.C. 786-2000, s. 13.