Q-2, r. 21 - Regulation respecting waterworks and sewer services

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18. Maintenance: The operator must maintain his waterworks or sewer system and be prepared, at all times, to make emergency repairs and avoid extended interruptions. He must have the material required for such purpose in his possession.
When conduits are obstructed, the operator must eliminate the obstructions without delay.
R.R.Q., 1981, c. Q-2, r. 7, s. 18.