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

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70. Grey water haulage: However, where it is impossible to connect a biological system to an absorption field because of sections 55 and 62, grey water may, despite sections 68 and 69, be discharged into a holding tank of a minimum total capacity of 4.8 m3 built and maintained in conformity with sections 56, 58 and 59.
R.R.Q., 1981, c. Q-2, r. 8, s. 70.